Hydrographie Information Processing System
Contents
1. LO ell a 990909 u nn Equipment Configuration MATTHEW DOLPHIN Trials Data Processing Room From Mermaid Data Logging 2GS 22 3 GB disk Se ETHERNET P n P2184E 2 SIMRAD EM 100 Operator Manual NAVOCEANO Page 4 Part 1 System Familiarization POSITION INPUT SOUND VELOCITY EXTERNAL CL COLOUR GRAPHIC RECORDER peux SEE y TRANSCEIVER gt TRACK PLOTTER HEAVE ROLL amp PITCH SENSOR GYRO COMPASS Fig 1 2 EM 100 system units major assemblies Simrad Incorporated D VS ANNEXE C HIPS Hydrographic Information Processing System Functional Description NOVEMBER 199 Universal Systems Ltd 270 Rookwood Avenue Fredericton NB CANADA 2M2 Tel 506 458 8533 Fax 506 459 3849 CARIS HIPS Functional Description CARIS HIPS Hydrographic Information Processing System Functional Description oyember 1991 1 0 Overview the HIPS Hydrographic Information Processing System The HIPS Hydrographic Information Processing System is a powerful software system which has been designed specifically to process the very large quantities of sounding data now being collected by multi beam echosounders HIPS is designed to receive logged sounding data automatically check the data for blunders automatically perform corrections and merge data sources to produce clean soundings The automatic processing is supported by powerful user frie2. Suggested hotels are St John s hotel 709 726 4980 or Travellers Inn 709 722 5540 both on Kenmount Rd Route 1 To get to Long Pond wharf from St John s airport go east on Portugal Cove Rd Route 40 for 2 km then west on Prince Phillip Dr for 4 km then west on Kenmount Rd Route 1 for 10 km then take exit la then west on Pitt Memorial Dr for 7 5 km then west on Route 60 for 3 km to the wharf road It s about 30 minutes DAILY SCHEDULE There will be a daily work plan posted on board the MATTHEW each evening prior to the next day s work 1 3 November Mobilization Installation and testing of equipment on MATTHEW L Slipp J Smart J Wilson A Godin and GRI personnel will be involved MATTHEW will be docked in St John s at first and then go to Long Pond likely on 3 Nov Monday 4 November MATTHEW EM100 tests e patch test and other necessary calibration procedures Complete HIPS and DOLPHIN equipment installation T N CHS Hydrographers arrive in am EM100 operator training Begin MATTHEW testbed survey to collect data for HIPS HIPS testing m Begin MATTHEW DOLPHIN survey HIPS testing Thursday 7 November MATTHEW DOLPHIN survey Demonstration for US Navy HIPS testing MATTHEW DOLPHIN survey HIPS testing r Novem Matthew EM100 tests patch test accuracy repeatibility tests shallow water test deep water test mechanical pitch test HIPS testing n N m Matthew EM1
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4. le moteur qui contr le le syst me de stabilisation en tangage s est encore a plusieurs reprises arr t Malgr le fait que le transducteur EM100 du Matthew a t install avec une rotation de 180 comme le preconisait la compagnie SIMRAD ce probl amp me est toujours pr sent V locim tre les donn es du v locim tre contiennent parfois des valeurs erron es qui peuvent tre d tect es sur l unit de l op rateur du EM100 Une fois que les donn es sont transf r es du moniteur SVM 1 l unit de l op rateur elles sont perdues et il faut refaire une saisie pour r introduire les donn es TMS1000 en premier lieu les donn es de mar e d rivaient des valeurs r elles et des v rifications r guli res nous obligeaient recalibrer le mar m tre A la fin des essais il tait impossible d acc der au menu principal du programme USER affichant le message Introduction This version is in ROM Hit any key ce qui nous retournait l tape pr c dente Note les probl mes rencontr s sur le EMIOO ainsi que des commentaires ont t transmis la compagnie SIMRAD par Art Parsons BIO et dont une copie se trouve l annexe E Recommandations Positionnement tout syst me de positionnement reli au EM100 ou EM1000 devrait avant les op rations d acquisition subir un monitoring complet en vue de d terminer 51 y a duplication de positions ou erreur en temps entre la mesure d une position et la m
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6. ANNEXE A Plans for MATTHEW Trials HIPS data processing and MATTHEW DOLPHIN EM100 Conception Bay NFLD 1 15 November 1991 Prepared by G Costello All the key participants in the trials have been identified The following describes the work planned during the trials and lists the responsibilities of each participant These are the final plans future correspondance will be in the form of updates on specific items or discussions during our weekly conference calls Summary The objectives of these MATTHEW trials are 1 To field test the new UNB USL data processing package HIPS 2 To conduct trials on the MATTHEW EM100 system in preparation for next field season 3 To conduct a simultaneous MATTHEW and DOLPHIN EM100 survey 4 To get an EM100 data set MATTHEW of the test site for comparison with other data sets The trials are scheduled from 1 to 15 November 1991 at the DOLPHIN test site in Long Pond Conception Bay about 30 km west of St John s During the trials the MATTHEW will be working out of Long Pond Refer to the attached chart Operations will be daily with the MATTHEW departing Long Pond in the morning and returning that evening The ship will continue to work later in the evenings if necessary to complete the survey work On 1 November the MATTHEW will be docked in St John s harbour USL UNB GRI and BIO technical personnel will arrive on 1 November to begin equipment installation CHS hydrographers will arrive o
7. STD operation and interface to EM100 ISAH operation Joe Grzetic and Trevor Johnson Install new EM100 software and eproms in DOLPHIN system Interface MX4200 to ISAH and EM100 J dium Goodyear Charlie Stirling The following will remain on MATTHEW 2 Draftmaster II s VT320 and 1 VT330 e 1 SVP 16 sufficient plotter pens paper and mylar SUN mauuals EM100 manuals TSS manual Gerard Costello Contact Long Pond Harbour Mas Done e Ensure Mermaid software is delivered to BIO from SIMRAD Done Check MATHEW for set of Sun Unix manuals including System Manager Done Prepare information for visitors to trials Submit N M regarding trials Plan details of MATTHEW tests Specs on all EM100 telegrams sent to L Slipp Done Check existing computer configuration on MATTHEW and report to USL UNB Done Check lighting on MATTHEW computer room Done Prepare daily operation schedule during trials e Contact and alert SUN Field Rep Done Get details on helicopter time Done e Send comments on existing HIPS menus to USL Prepare equipment configuration diagram and distribute Done Send list of potential CARIS bugs to USL Coordinate with other regions Done e Prepare Cruise Plan B list of staff and next of kin submit to Ships Division Captain Roy Lockyer Get life jackets and survival suits for 15 extra people 9 day workers and 6 visitors above the full
8. a summary report describing the maximum and minimum corrections made due to each of the above effects HIPS Hydrographic Information Processing System UNIVERSAL SYSTEMS LTD CARIS HIPS Functional Description 2 1 6 Spatial Index Production An optimized Position Spatial Index file for any number of given input Position Depth files is produced at this stage This index file allows faster access for subsequent retrieval of soundings from Position Depth files 2 1 7 Interactive Sounding Editing An interactive graphics tool provides full operator interaction for depth data cleaning and verification An interactive subset creation tool which is one part of the Sounding Editor is used to select sub areas for editing Editing functions include tools which generate the following data to assist in the verification process An estimated surface comprising a moving weighted average A standard deviation surface e Automatic classification of soundings based on the above surfaces Overlap visualization and summary report of coverage Shaded plan views colour coded standard deviations and depths layer coloured raster Plan and elevation views of soundings Also included are Query functions for individual sounding attributes including position sounder number signal quality etc Interactive functions to mark bad soundings 2 2 Data Displ Data Visualization Once data has been cleaned to an acce
9. data to L Slipp at UNB HS Hydrographers M Lamplugh M Ruxton Rodger A Godin J Manning and D Street Read EM100 operator manual May 91 version Read Mermaid documentation e Get some hands on the EM100 in J Wilson s shop M Lamplugh and A Godin goto UNB on 24 25 October Inform Costello of anything missing in preparation for trials e Read review UNB report Requirements Analysis and Conceptual Design of Data Cleaning Tools for Large Bathymetric Data Sets November 1990 Get copies plots of all historical data sets of the test site in Conception Bay in particular CREED Elac and SMITH Lamplugh and Ruxton e Prepare HIPS Feedback sheet for use during trials Lamplugh During trials hydrographers will alternate between EM100 operation and HIPS processing Send the Navitronic SVP 1 to Costello in St John s A Godin GRI Procure and test DGPS system including HF radio link prior to trials Supply Positioning for MATTHEW and DOLPHIN Configuration and Installation of all DOLPHIN equipment on MATTHEW e Plan details of MATTHEW DOLPHIN survey Alvin Hayes e Complete DOLPHIN EM100 patch test and calibration prior to trials Prepare TMS tide data for input into HIPS contact L Slipp Prepare back up logging in case Mermaid don t work Provide EM100 operator training to hydrographers on 5 November Tide gauge operation Geodetic control SVP
10. en faisant des analyses sur la zone de chevauchement difference DTM contour plot STD surface etc Recommandations 1 Obtenir des claircissements aupr s de SIMRAD pour conna tre le vrai sens des erreurs ambigu t entre les sections P2343 0 page 1 2 et P2361E 0 page 14 du manuel de l op rateur ainsi que la signification des entr es dans le OPU roll pitch gyro offsets et _ dans le QA unit roll amp gyro offsets 2 Mettre au point des proc dures de commandes command files avec CARIS pour faire le traitement en batch beaucoup plus rapide 3 Une fois que les valeurs exactes des erreurs ont t d termin es les int grer dans le OPU afin que toutes les corrections soient faites en temps r el Ceci prend particuli rement de l importance lors de la correction pour la vitesse du son dans la colonne d eau qui est seulement faite en temps r el De plus il est logique de corriger des mesures lors de leur observation car une correction dans le post traitement n agit que par une rotation des sondes autour d un axe en assumant que le fond est plat ce qui est rarement le cas 4 Une valuation subs quente du traitement par le HIPS m a permis de constater que le syst me ne corrige pas les donn es pour ia difference entre le tangage du navire ship pitch et l angle que prend le transducteur p r au plan du navire transducer pitch Toutes les donn es ont donc t incorrectemnt trait es et ceci explique
11. et les valeurs ont t v rifi es Une moyenne de 1 42 pour l erreur de tangage a donc t obtenue et c est cette valeur qui doit maintenant tre adopt e i e d une part il faut utiliser les mesures faites sur les lignes corrig es pour l erreur de roulis non biais es par le d placement des isobathes caus par l erreur de roulis et d autre part une augmentation de l erreur de 1 Tl est imp ratif de faire une moyenne sur plusieurs mesures tant donn que l exactitude de ces mesures repose sur la pr cision du syst me de positionnement Le syst me employ sur le CSS Matthew tait un GPS en mode diff rentiel de marque Magnavox 4200D avec une pr cision de 5 m o 3 1 2 1 42 semble plus juste quand on observe les r siduelles sur la surimpression des rac s d isobathes de deux lignes r ciproques effectu es dans le dernier patch test 3 1 11 reste 8 faire 1 Retraiter les donn es de lignes r ciproques en eau profonde avec une correction de 1 42 pour le tangage et d terminer de facon pr cise lerreur de roulis i e l erreur de 0 5 avait t obtenue de mani re approximative avec les fonctions de calibration du QA unit et une analyse statistique sur plusieurs mesures serait plus appropri e pour d terminer cette erreur 2 Retraiter les donn es en eau profonde avec des corrections pr cises pour le roulis et le tangage et v rifier la r p tition et la performance du syst me
12. ships complement this is in addition to the 7 people occuping the scientific berths V MATTHEW R ISAH Helm cor Display a i i Y E ae WR cr ee DOLPHIN 77773 9 2 RUE e tU RM SOI RER EEE N QA CODDSUTSUNSNSUNSS DOLPHIN Ecc Sig SS SN oo ol NM 465 TER Y e un sosa au N RD ONE Yu SS N Ss waren i SIS VE T a lat long ER nn CU Zn PI E RR Rau Conf ti reple PERO USSR quipment Configuration Data ei MX4200D B of DOLPHIN DOLPHIN ja Cie ann fem MATTHEWDOLPHIN ee Transceiver 4 Trials To HIPS Data Processing 558 78 090 48 49 9 B Bi ee le gt 99 ste NL vt gt CORAN s c OQ ge 9 0 9 0 6 ST 00 0 U Ag E S s 0 09 6 9 9 9 9 9 6 5 m 9 9 9 9 9 06 39 w 618 8 wu vo SEP A DB 66 9 AA O 5 Ra emo 6 ROSE ET A o s 6 9 X UP of VE NT AU om X US ON d S A 58 A Y d A we MES 96 9 EC ON 671 67 OU e POSO 22 0 OM 97m v m 4 06 e 9 PD Sis Oe ses o Ree we E 91 wg m 9 040789 1 OUT A A POST CRE ENT A gt ae CA NT ee CES NON MEAR A er T A TAN E
13. 00 tests patch test accuracy repeatibility tests shallow water test deep water test e mechanical pitch test HIPS testing Monday 11 November Matthew EM100 tests patch test accuracy repeatibility tests e shallow water test deep water test mechanical pitch test MATTHEW EM100 testbed survey HIPS testing Tuesday 12 November MATTHEW EM100 testbed survey HIPS testing Wednesday 13 November MATTHEW EM100 testbed survey MATTHEW DOLPHIN survey HIPS testing Thursday 14 November MATTHEW EM100 testbed survey MATTHEW DOLPHIN survey HIPS testing Friday 15 November MATTHEW EM100 testbed survey MATTHEW DOLPHIN survey HIPS testing ILC emobilization completed by 1800 h and ship ready for departure to Halifax The above work schedule is subject to change depending on progress weather and visitors plans Leonard Sli n hn Sm e Write up a brief description of HIPS for distribution during trials e Configure the MATTHEW SparcStation including reinstall the OS to ensure HIPS will function configure the software aspects of ethernet e Hardware solve GX board issue Done HP paint jet plotter Done e Software Reconfigure MATTHEW GS for trials Re install Sun OS on MATTHEW GS 1 2 days Ensure Sufficient Swap space Disk partitions of sufficient size 300mb Test data transfer from Mermaid GX to HIPS GS Network configuration amp testing HIPS software install
14. Also the means to print a hard copy of the profile would be very useful John Gillis Page 4 IMPORTANT IMPORTANT IMPORTANT Stepper motor lost power and was not functioning but status and error were never displayed on the operator console Tests were conducted November 10 by turning off power message was not received 2 With DOLPHIN EM 100 monitoring on outer beams found discrepancy of 2 to 3 metres in less than 100 metre depths between phase measured and amplitude measured depths Why QA contour plot will overload system when using the longer scales for the plot A notation on QA contour plot is sometimes not readable Must have an indication in the plotting room to show that stepper motor is or is not operating We have operated in calm water for some number of hours without the system operational not knowing if it was effective ADDITIONAL COMMENTS The bug in the software that allows storing of identical position should be resolved without having to do it visually on screen Reader telegram should indicate reception mode This would allow for automatic flagging of unused beams More interactive editing during QA calibration that would include same features for a pitch and time as for roll and gyro to calculate offsets Antenna offset input and QC menus Require better documentation of the algorithms especially 2 calculations offsets of pitch roll Should not be able to initialize a disk o
15. D Les essais du DOLPHIN et les tests beta du HIPS font partie des projets B et D du programme COMS Canadian Ocean Mapping System d velopp et g r par Gerard Costello Du 2 au 4 novembre e Installation de l quipement d enregistrement et de traitement des donn es par la mise en r seau ethernet LAN de trois ordinateurs SUN Sparkstation II Les branchements la configuration des syst mes et l assujettissement de ces appareils ont t effectu s par le personnel de UNB University of New Brunswick et USL Universal Systems Ltd ainsi que par des techniciens de BIO Bedford Institute of Oceanography 2 Sparkstation II GS pour le traitement avec 96 Mo RAM 3 disques durs de 669 Mo chacun et 1 disque dur interne de 210 Mo 1 lecteur optique 1 lecteur Exabyte 1 lecteur de bande de 1 4 et 1 lecteur de disquette de 3 1 2 Le syst me d exploitation est UNIX et les logiciels de traitement sont HDCS Hydrographic Data Cleaning System et un module de CARIS pour la DNE des donn es le tout fonctionnant sur X windows et Motit Rapport de mission Matthew Trials et visite BIO EC 18 9 vt 2 1 Sparkstation II GX pour l enregistrement des donn es du EMIOO avec 32 Mo Ram 1 disque dur Wren VII de 1 2 Go 1 disque dur interne de 210 Mo et 1 lecteur de bande de 1 4 Le systeme d exploitation est UNIX et le logiciel d enregistrement est MERMAID SIMRAD fonctionnant sur X windows et Motif e Installation par
16. GRI a mis au point un programme d dition et de reformatage des donn es et dont j ai ramen copie Finalement je devais m occuper de r cup rer les donn es de mar e recueillies par le TMS 1000 mais ce dernier ne fonctionnant pas ad quatement ce sont les donn es du TMS 50 qui ont servies r duire les sondages e Des visites de diff rentes sommit s ont eu lieu durant les essais dont les directeurs r gionaux du SHC des repr sentants de la U S Navy ainsi que d autres personnes de UNB BIO et du MPO Ottawa Gerard Costello faisait alors le tour des installations ainsi qu un expos sur les tapes et les r alisations du programme COMS Leonard Slipp de UNB et John Smart de USL ont effectu des d monstrations du HDCS et du module CARIS du syst me HIPS e Mis part les essais ma t che consistait accumuler toute information pertinente en vue de l installation du EM1000 sur le Creed Jim Wilson technicien en lectronique BIO a particip aux cours donn s par SIMRAD sur l installation et la maintenance des EMI1OO ainsi qu l installation de ces syst mes sur le Creed et le Matthew il est une personne ressource dans ce domaine Gerard Costello est la personne cl pour les contrats sign s avec SIMRAD ainsi que l inventaire et la distribution des quipements Du 18 au 20 novembre Durant ces trois jours j ai rencontr les personnes responsables de l quipement du EM1000 et ai fait l i
17. M MATTHEW DOLPHIN TRIALS Can we replay from Mermaid Bug in QA calibration can t choose second profile di ear John Gillis Page 3 Coordinate system ambiguities Pg 1 2 2343 0 operator manual Heave ve ship lower than horizontal Roll ve starboard up Pitch ve bow down Pg 14 2361E 0 datagram o p depth datagram Heave ve ship lower than horizontal Roll ve starboard up Pitch ve bow down No indication of pitch error at OC V3 3 September 1991 Simrad 90 position Q factor use error ellipse parameters directly a b orientation at least a instead of the scale 0 10 Put OC switch version in every diagram COMMENTS ON EM 100 OPERATOR CONSOLE OPERATION Menu In ultrawide mode 27 beams zero depths are assigned to beams 1 2 3 31 and 32 these are logged in the depth telegram and appear during processing as zeros This should be resolved Pinas aq Tools It appears than when Simrad receives position information it doesn t recognize that it logged the last known position again Up to four identical positions have been seen Spikes and velocity data may be missed if numerical input is not checked The graphic display on Simrad for the velocity profile should automatically default to the scale which shows all data centred Display for velocity profile will not show spikes if they fall outside the graphic window The above could be corrected by an auto scale feature
18. Test ainsi que des lignes en eau profonde ont t fait le 5 novembre alors que les hydrographes de la r gion Scotia Fundy arrivaient Des modifications et de la programmation sur le logiciel HDCS ont t n cessaires afin de traiter les donn es Ce logiciel tant encore en d veloppement nombre de fonctions n taient pas encore accessibles ce qui obligeait Leonard Slipp concepteur de ce syst me UNB ins rer de facon interactive les donn es dans le HDCS et ceci plusieurs tapes du traitement en plus de r pondre diff rentes demandes sp ciales inh rentes la bonne marche des op rations Plusieurs algorithmes de traitement ont d tre modifi s ou repens s en vue d obtenir des positions corrig es pour les mouvements du navire et interpol es lors de la fusion D autres algorithmes devaient tre tablis pour corriger les erreurs d alignement Des lignes r guli res de sondage ont ensuite t effectu es simultan ment avec le DOLPHIN au dessus d un site testbed pr alablement sond avec le FCG Smith Mon travail consistait 3 entrainer les hydrographes aux op rations d acquisition des donn es avec le EM100 J etais en outre responsable avec Mike Lamplugh du traitement des donn es du Patch Test et de l entra nement des hydrographes sur les syst mes de traitement De plus j ai effectu une tude comparative des donn es du v locim tre et de la sonde STD 12 pour laquelle Alvin Hayes
19. The reduced number of data points also allows other processing to be carried out more efficiently 2 2 4 DTM generation The DTM Module can produce an irregular DTM using up to 500 000 soundings A gridded DTM can also be produced with an unlimited number of input soundings The gridded DTM uses a moving weighted average interpolation function 22 5 Produce Contour Worksheets Once the DTM is created contours can be drawn and contour worksheets can be generated The contours may be colour coded as demanded by the hydrographer and labels may be interactively placed Automatic contour labelling will be available 2 2 6 Produce Profiles Interactively The DTM worksheets allow the hydrographer to define the direction of a profile on the DTM and have it generated and displayed in X section on the screen Vertical and horizontal scales can be selected for feature identification 2 2 7 Produce 3D Views 3D views based on the DTM can be generated to assist hydrographers in detecting certain features on the seabed The DTM can be classified by depth slope or aspect Map features can be draped over the DTM For plotting on a pen plotter 3D grids coloured by depth slope or height can be displayed and redirected to the plotter 2 2 8 Produce Selected Depth Plots The data output module produces different plots that indicate selected soundings DTMs profiles and original data 2 2 9 Produce Raster Surface Visualization Asa b
20. X Windows amp Motif bring libraries amp debugging software 1 day install UNB HDCS and USL HIPS recompile system bring HDCS directory and Conception Bay amp Anticosti EM100 data tape recorder Transfer HDCS data Position Depth file to HIPS CARIS Done Assemble required HIPS modules to one package 7 1 7 2 7 3 1 5 7 5 1 6 7 1 7 8 7 9 8 1 6 2 8 3 8 4 Identify USI UNB personnel Done e Confirm which plotter printer will be used for Screen dumps Done Will Morton code searching be demonstrated Flagged data points from HDCS must be passed to HIPS CARIS e Bring tape recorder and video camera e Send latest version of ISAH to GRI to output lat long e solve graphics terminal request VT240 or 340 or 330 e deliver and install the Mermaid 2GX on the MATTHEW e configure the MATTHEW EM100 operator console DOLPHIN EM100 operator console Mermaid GX and HIPS GS on ethernet Set up computer addresses hostid s Connect a terminal VT320 to the HIPS GS e Bring Draftmaster II to St John s Check on generator at BIO 1 kw Done Send latest EM100 software and eproms to GRI Done e Install new software and eproms on MATTHEW EM100 Check on old DOLPHIN engine at BIO Leaman 4 cylinder Transducer ram operation a S Forbes e Configure the SparcStation 2GX at BIO including new disk for Mermaid Done Install and test Mermaid software on GX computer at BIO Done Send Mermaid logged
21. ater test Deep water test e Mechanical pitch test A regular EM100 survey of the test bed area will also be completed The MATTHEW EM100 is ready for operation New versions of operator console software and transceiver eproms have arrived from SIMRAD and will be installed by Jim Wilson He will be on the MATTHEW for the duration of the trials These trials will be carried out in cooperation with Geo Resources personnel GRI have prepared detailed plans and are responsible for the operational aspects of DOLPHIN and positioning for both MATTHEW and DOLPHIN Positioning Geo Resources are responsible for supplying the positioning qi For MATTHEW Only Trials Primary DGPS and ISAH Secondary Single GPS and ISAH Tertiary MRS and ISAH For MATTHEW DOLPHIN Trials Primary DGPS and DOLPHIN Navigation system Secondary DGPS and ISAH for MATTHEW DGPS and DOLPHIN Navigation system for DOLPHIN Tertiary Single GPS and ISAH for MATTHEW Single GPS and DOLPHIN Navigation system for DOLPHIN There may be short periods of GPS outages in the mornings but as of noon local time GPS coverage will be good Sound Velocity Data Sound velocity or STD profiles will be collected as required during the trials The Navitronic SVP 1 on loan from Qu bec and the SVP 16 on the MATTHEW are available As a backup the STD 12 on loan from Qu bec region will be available Tidal Data A TMS 50 and an Ottboro are installed at Long Pond and maintai
22. ch test en profondeur moyenne et des lignes crois es en eau profonde 90 et d une longueur de 0 5 mille au dessus d un fond plat et r gulier V rifier lors du patch test et avec les fonctions de calibration du QA unit si les corrections ont t appliqu es dans le bon sens 7 Verifications traiter toutes les lignes sans corrections V rifier les erreurs de tangage roulis temps et azimutale Il y aura toujours des diff rences mais elles devraient tre maintenant n gligeables Effectuer des soustractions de DTM et des surfaces de l cart type pour les lignes en eau profonde afin de v rifier la consistance des mesures et la pr sence d erreurs de syst me Evaluer les diff rences en fonction de la profondeur et comparer avec la pr cision du syst me CSS Matthew Conception Bay nov 199 ES PITCH ERROR CALCULATION no correction applied 3 09 4 00 3 00 37 00 38 00 0 00 0 00 23 7 1 87 2 13 1 2 0 9 4 74 2 78 v EOE ON 010 Lens Do Eu if t 58 00 gt N t 72 00 1 47 _ 0 61 0 74 1 79 2 42 1 74 1 71 1 1 50 4 00 __ 4 00 66 00 67 00 39 00 2 00 58 00 65 00 5 50 72 001 1 00 0 40 5 26 4 76 2 1 4 91 5 16 5 28 7 00 6 50 5 50 3 03 4 9 0 64 00 10 50 4 69 65 00 11 50 5 06 66 00 10 50 4 55 72 00 13 00 73 00 13 50
23. collection characteristics dictate the ultimate product to be displayed stored and made available for various hydrographic computations eg if the ship s characteristics are not provided then the associated corrections for roll pitch and heave cannot be applied Data once retrieved is stored in seperate files for navigation depth heading heave pitch and roll All files are indexed by time 2 12 Preliminary Navigation Quality Control The navigation data is filtered and undergoes quality control ship positions which are not possible according to simple rules will be automatically removed or flagged in the navigation data status word A summary report will be produced which quantitatively describes the results 2 1 3 Preliminary Sounding Quality Control This function automatically flags suspect soundings Tne sounding QC uses algorithms which test minimum and maximum depth as well as sounding slope and spike detection 2 1 4 Interactive Navigation Editing This module allows for full operator interaction for flagging certain sections of a ship s track as being bad even though they are not detected by the automatic filtering algorithm The user will also be able to confirm suspect navigation data as actually being bad 2 15 Merging of Positions and Depths A merging function takes HDCS depth navigation tide velocity profile vessel dynamics and other files to generate the Position Depth file This function will generate
24. es diff rentes vitesses des d placements plus grands pour des vitesses plus lev es S il y a une erreur de temps le mieux est de la d terminer en faisant le monitoring du syst me de positionnement et de retraiter les lignes avec des corrections de roulis et de temps Le calcul de l erreur de tangage se fait par la moyenne de toutes les erreurs calcul es en utilisant si possible un chiffrier lectronique ce qui est beaucoup plus rapide et efficace Les mesures de d placement doivent se faire l aide du module CARIS du HIPS car il permet la pr sentation des contours DTM r gulier avec le trac des positions ship s track la mesure des distances avec un curseur et le zooming ce qui augmente de beaucoup la pr cision des mesures 4 D termination de l erreur de roulis traiter les lignes r ciproques en eaux profondes avec les corrections de tangage et de temps s il y en a Mesurer et calculer l erreur de roulis avec la m thode utilis e en et selon les proc dures NOAA 5 D termination de l erreur azimutale traiter les lignes adjacentes et de m me direction faites en 1 avec les corrections de temps roulis et tangage Mesurer et calculer l erreur azimutale avec la m thode utilis e en 3 et selon les proc dures NOAA 6 Refaire un patch test int grer toutes les corrections dans les sous menus INSTALLATION MENU MOTION SENSOR MENU ROLL OFFSET amp PITCH OFFSET de l unit de l op rateur Faire un pat
25. essus du plan horizontal selon le manuel d op ration du EM100 P2343 0 page 1 2 2 Un jeu complet de lignes r ciproques et adjacentes Patch Test 1 a alors t obtenu afin de d terminer de facon pr cise et par le biais du traitement HIPS et d analyse les erreurs d alignement roulis tangage et gyro du syst me Des lignes ont t sond es des vitesses diff rentes afin de v rifier la pr sence d erreurs en temps 3 L tape suivante consistait traiter les donn es et obtenir une s rie de trac s d isobathes afin de d terminer les erreurs de tangage et de temps tout en appliquant une correction de 0 5 au roulis afin de rendre les isobathes parall les permettant des mesures plus pr cises 2 4 Des mesures de d placement entre isobathes ont t effectu es sur des copies papier avec des donn es non corrig es pour le roulis et sur cran graphique l aide des fonctionnalit s offertes par CARIS sur des lignes dont la correction de 0 5 au roulis tait appliqu e Les mesures ont t faites sur 3 jeux de lignes 5 kn 10 kn et 10 kn lignes adjacentes offrant 5 comparaisons possibles dans le but d obtenir la meilleure moyenne statistique de l erreur le chiffrier lectronique Lotus t utilis Une moyenne de 1 2 a t d termin e sur un total de 400 mesures Une erreur n gative signifie que l trave se trouve en dessous du plan horizontal selon le manuel d op
26. esure des profondeurs Calibration obtenir de SIMRAD des versions d bug s des syst mes et une documentation claire et d taill e Suivre la proc dure de calibration que je soumets dans mon rapport sur la calibration annexe D Stepper motor utiliser un transducteur fixe et sonder par mer pas trop agit e ou obtenir une souon par SIMRAD V locim tre faire une v rification syst matique des donn es de v locit sur lunit de l op rateur du EM100 et enregistrer les donn es du moniteur SVM 1 sur un petit ordinateur HP comme d crit dans le manuel d op ration avant de transf rer les donn es dans le EM100 TMS1000 transmettre ces informations SOCOMAR Conclusion Malgr les petits probl mes rencontr s ce qui est tout compte fait normal face l implantation de syst mes aussi complexes les essais conjoints du Matthew et du DOLPHIN se sont admirablement bien d roul s Les deux v hicules ont effectu plusieurs lignes de sondages simultan ment et le pr traitement des donn es recueillies a d montr que les deux syst mes fonctionnent ad quatement et pourront tre utilis s pour des lev s de production Finalement j aimerais souligner l excellent travail de la compagnie Geo Resources Inc qui a su rendre l entreprise aussi efficace qu attrayante ainsi que le support exceptionnel de Leonard Slipp pour tous ies extra sans lesquels l op ration aurait t fastidieuse sinon compromise
27. ex 01931552 Your file Votre r f rence Mr John Gillis Simrad Our file Notre r f rence 202 Brownlow Avenue Dartmouth Nova Scotia B3B 1T5 Dear Jonn The following questions and comments result from our recent experiences with the operation of the EM100 on CSS Matthew 12 14 November 1991 including the use of the new Mermaid software QUESTIONS FOR SIMRAD p What are the specifications for the 400 Hz power supply provided by Simrad for the EM100 system onboard Matthew specifically maximum current load that the power supply can handle When we tried connecting two extra loads to this supply a 115 90 volt synchro in the Anschutz gyro system onboard and the gyro interface for the satellite communications Unit the supply seemed to shut down At present I don t know if there is a grounding problem on the Satcom interface but would appreciate the specifications on this supply Ze Does Simrad have any plans to incorporate into the EM 100 software a means to playback files logged to Mermaid or other hard disks similar to what can be done with the laser disk 3 There appears to be no schematics for the D650 module in the stepper logic unit Are these available 2 Bedford Institute of Oceanography Institut oc anographique de Bedford get PO Box 1006 C P 1006 Dartmouth N S B2Y 4A2 Dartmouth N E B2Y 4A2 a John Gillis Page 2 On November 9 we discovered the pitch motor not working discovered that
28. hydrographique du Canada MPO Biblioth 14026122 eque Region du Quebec QUEBEC RAPPORT DE MISSTON MATTHEW TRIALS DU 2 NOVEMBRE AU 20 NOVEMBRE 199 ANDRE GODIN HYDROGRAPHE 594 er fel P ches Fisheries et Oceans and 5 an A d Du 2 au 20 novembre 1991 Conception Bay T N et Dartmouth N E lt par Andr Godin Le rapport qui suit se r f re au Plans for MATTHEW Trials dont une copie se trouve l annexe A du pr sent document Des essais de l chosondeur multifaisceaux SIMRAD 100 install sur le CSS Matthew ont eu lieu Terre Neuve durant les deux premi res semaines de novembre La proximit des tests a permis la firme Geo Resources Inc GRI qui met au point l acquisition de donn es hydrographiques partir d cho sondeurs multifaisceaux install s sur les semi submersibles DOLPHIN d effectuer leurs essais avec le Matthew comme bateau m re Une autre partie de ces essais consistait faire les tests pr liminaires du syst me de traitement de donn es denses HIPS annexe C que d veloppe le Ocean Mapping Group de l Universit du Nouveau Brunswick conjointement avec la firme Universal Systems Ltd Ce syst me de traitement sera acquis par le Service hydrographique du Canada afin de traiter les donn es provenant des syst mes d acquisitions a roport s LIDAR multitransducteurs Navitronic Sweep et multifaisceaux SIMRA
29. l cart type relativement lev sur les mesures de calibration Le retraitement total des donn es n est pas n cessaire tant donn qu une multitude de mesures ont t faites et que ces erreurs seront uniform ment r parties Il faut modifier la programmation du HIPS afin qu il corrige pour la diff rence de tangage entre le navire et le transducteur La m thode utilis e ici diff re l g rement de la proc dure employ e par NOAA dans Patch Test a system check for multibeam survey systems mais le patron de lignes de sondage et les formules utilis es pour d terminer les erreurs sont les m mes 1 Patch test effectuer un patch test complet 30 150 m de profondeur au dessus d une pente moyenne 15 25 et d terminer l aide des fonctions de calibration du QA unit l erreur approximative de roulis Ne pas oublier de faire des lignes des vitesses diff rentes pour l tablissement d erreurs de temps 2 Eau profonde faire des lignes r ciproques en eau profonde 300 500 m au dessus d une pente r guli re et peu inclin e pour la d termination de l erreur de roulis 3 D termination des erreurs de tangage et de temps traiter les jeux de lignes r ciproques corrig es pour l erreur de roulis trouv e lors du patch test et effectuer les mesures de d placement entre les isobathes chelle 1 1000 V rifier la pr sence d erreur de temps par la comparaison des d placements sur des jeux de lignes fait
30. l quipe de GRI de la console de contr le du DOLPHIN dans la timonerie des syst mes de communication entre le Matthew et le DOLPHIN ainsi que la station GPS terre Installation de l unit de l op rateur du EM100 du DOLPHIN ainsi que du micro VAX 3100 et d une unit ISAH pour la navigation Installation du syst me de positionnement DGPS bord Magnavox 4200D B e Pour un apercu d taill consulter les diagrammes en annexe B d crivant la configuration de l quipement e Durant ces trois jours je me suis occup d installer le mar m tre TMS 1000 quip d un diaphragme sur le quai de Long Pond et d en faire les essais De plus j avais la charge de tester et de rendre op rationnel le v locim tre navitronic SVP 1 et de relier le moniteur SVM 1 aux deux unit s d operation 100 du Matthew et du DOLPHIN gr ce un cable en Y con u par GRI v rifier le bon fonctionnement du EM100 du Matthew et me familiariser avec les nouveaux syst mes effectuer un premier Patch Test Matthew DOLPHIN en observant les erreurs angulaires d alignement roll amp pitch offsets l aide des fonctions de calibration de l unit de contr le de la qualit QA unit La pr sence d erreurs en roulis et tangage et peut tre en temps est clairement apparue lors de cette premi re tape de calibration des d tails sur la calibration du EM100 du Matthew se retrouvent dans l annexe D Du 5 au 15 novembre e Un autre Patch
31. n 5 November There should be 3 vehicles available GRI J Wilson and M Ruxton G Costello will coordinate the trials he can be reached at 709 739 0918 FAX 709 739 1538 Preparation for the trials will be reviewed each week on Fridays participants will be contacted regarding their state of readiness Following the trials UNB students will join tre MATTHEW for the trip to Halifax to get hands on experience with the EM100 and HIPS data processing while at sea There will be 5 bunks available for students on the MATTHEW This is a brief summary mainly to clarify dates 1 Nov MATTHEW will be docked in St John s Ready for equipment installation by 1800 hr Jim Wilson John Smart Slipp and Andre Godin arrive GRI personnel are in St John s 2 4 Nov Equipment installation and initial calibration in St John s Long Pond 5 Nov _ Lamplugh M Ruxton and Rodger arrive and join MATTHEW J Manning and D Street join MATTHEW 5 15 Nov Daily sea trials from Long Pond 11 15 Nov Visitors are welcome to view the sea trials 16 Nov Unload equipment from MATTHEW Long Pond or St John s ship ready for departure to Halifax late that evening IPS Trial USL UNB will install HIPS on the MATTHEW and demonstrate its functionality using EM100 data collected by MATTHEW and DOLPHIN MATTHEW EM100 Trials The following tests will be conducted e Patch test Accuracy repeatability tests Shallow w
32. nae will be mounted on the flying bridge or mast of the ship with cables to the chart room or bridge A reconnaissance visit to the MATTHEW was made on 23 September to discuss this installation Per nel mm i The following personnel will participate in the trials and will stay aboard the MATTHEW Leonard Slipp from UNB Wing Wong and John Smart from USL Gerard Costello Mike Lamplugh Glen Rodger and Andr Godin from CHS The following personnel will stay ashore Mike Ruxton Joe Manning and Dave Street from CHS Jim Wilson from BIO Derrick Peyton Alvin Hayes Joe Grzetic Jeff Head and Trevor Johnson from GRI GRI Jim Wilson and Mike Ruxton will have vehicles Visitors will be scheduled between 11 15 November only unless these dates are a problem for them Confirmed visitors to date include 2 Three personnel from US Naval Oceanographic office 7 November mainly for a DOLPHIN demo from GRI Ted Maher and Don Dinn from BIO 13 14 November D Nicholson from CHS 7 11 November D Wells and or C Ware from UNB 10 11 Nov Mike Crutchlow from CHS sometime between 8 15 Nov to be confirmed John Warren from CHS 13 14 Nov We expect CHS personnel from other regions but names and dates are not confirmed yet Please call G Costello to confirm your visit The ship can handle a maximum of 6 visitors on a day trip All visitors will stay overnight but meals will be provided while they are on board during the day
33. ndly interactive editors developed specifically for swath data editing Upon cleaning field sheets can be prepared and plotted using a wide range of hydrographic processing software The cleaned data is available for further input into for example hydrographic databases HIPS comprises the following components 1 Hydrographic Data Cleaning Software ae 2 Data Visualization The Hydrographic Data Cleaning Software HDCS first retrieves previously logged survey information Systems to be supported initially include the Simrad EM 100 the Optech SHOALS and the Navitronics SEADIG 201 HDCS processes the data globally ie corrects for blunders tides draught sound velocity heave roll etc so that the collected data is clean Fast automatic processing is supported by interactive graphics tools This allows the hydrographer to have full control over processing where necessary Both interactive and automatic corrections work on individual data to address sounding anomalies such as spikes and data gaps The cleaned soundings can then be processed and displayed via the Data Visualization module This module performs all tasks necessary to generate finished field sheets which can be plotted for presentation The cleaned soundings are also available for inclusion in a hydrographic database and can be manipulated using CARIS for cartographic chart compilation design calculations for marine construction works dredging calculations and f
34. ned by GRI Data will be available daily Sun Workstation Confi Two Sun workstations are required for trials one to control the _ MATTHEW EM100 data logging using the new Simrad Mermaid D software and one for the HIPS data processing USL will ship the SparcStation 2GS to St John s already configured with HIPS and a SparcStation 2GX from CHS BIO will be installed for Mermaid D logging The existing SparcStation 2GS on the MATTHEW will be used as backup Mermaid software has arrived from SIMRAD and is being installed at BIO The MATTHEW EM100 operator console DOLPHIN EM100 operator console the Mermaid datalogger SparcStation and the HIPS SparcStation will be connected via ethernet The Mermaid SparcStation will log the data temporarily daily on its disk and then as required the data is transferred to the HIPS SparcStation main disk for processing The following equipment needs to be installed on the MATTHEW for the simultaneous DOLPHIN MATTHEW operations ext e DOLPHIN operator system including operator console navigation computer and radio EM100 system including operator console QA unit and data logger 3 antennae GPS receiver HF radio for GPS corrections and DOLPHIN telemetry link The first two items will be installed in the hydrographic chart room and or on the port side of the bridge The EM100 computers are individual components not housed in the large blue cabinets The anten
35. nventaire de cet quipement Je me suis entretenu avec John Gillis de SIMRAD Mesotech afin d obtenir des informations compl mentaires et des claircissements sur certains points En plus de diff rents documents j ai ramen une bande vid o sur linstallation d un EMI2 similaire aux autres chosondeurs multifaisceaux J ai effectu une courte visite aux locaux de Sirius Solutions afin d assister une d monstration de leur syst me de traitement et pour poser plusieurs questions sur les ordinateurs Silicon Graphics Probl mes rencontr s Positionnement une ou plusieurs positions semblables mais ayant un temps diff rent se succ daient dans les fichiers de positions du Matthew sans pour autant les voir graphiquement chevauchement Le probl me fut r solu par GRI en changeant la s quence d mission des t l grammes de positions sortant du GPS Calibration des bugs sont pr sents dans les fonctions de calibration du QA unit i e on ne peut refaire les calculs de calibration pour le roulis De plus il y ambigu t dans le manuel de l op rateur quant au signe que prend les donn es de roulis et de tangage page 1 2 P2343 0 et page 14 P2361 0 Il n y a aucune indication pr cise sur le sens erreur ou correction que doit prendre les roll et pitch offsets dans l unit de l op rateur Les versions des syst mes ont chang mais leur documentation est aussi pauvre sinon pire Stepper motor
36. or other hydrographic related requirements See Figure 1 attached HIPS Hydrographic Information Processing System UNIVERSAL SYSTEMS LTD CARIS HIPS Functional Description HIPS operates on workstation hardware operating under UNIX in a menu driven X Window environment using MOTIF as a presentation manager Hydrographic Information Processing System HIPS Processing Steps Figure 1 SURVEY INFORMATION CUSTOMER Supplied DATA RETRIEVES Hydrographic _RETRIEVAL Data for processing HYDROGRAPHIC DATA mn CLEANING SOFTWARE DATA EDITING tides sound velocity draught heave rall pitch a ERA and AUTOMATIC DATA VALIDATION Processing pie removal data himing DTM PLOTS DATA VISUALIZATION NS er 2 Depth Raster 1 CHART COMPILATION CALCULATIONS DATA STORAGE HIPS Hydrographic Information Processing System UNIVERSAL SYSTEMS LTD CARIS HIPS Functional Description The Hydrographic Data Cleaning Software HDCS edits the data globally ie corrects for blunders tides draught sound velocity heave roll etc and provides for both interactive and automatic data corrections on individual data samples ie spikes gaps etc Processing is done in a number of steps 2 1 1 Data Retrieval Data Retrieval involves reading survey logging files and writing the data into HDCS files The Data Retrieval portion of HIPS is survey system dependent In each case a given system s data
37. ptable level with the HDCS software it is available for a number of products Following is a list of the various operations and tools available for field sheet production 22 1 Field Sheet Planning and Creation A menu based system is used to define a pattern of field sheets covering the area of interest Individual field sheets can also be defined Many ellipsoids and projections can be supported Cartographic INT2 standard borders projection geographic graticules and scale bars can be added to the template field sheets 2 2 2 Reformat from PositionDepth files At the end of HDCS processing of a 5 survey data the cleaned soundings are transferred into one or more field sheet files The transfer can be limited according to sounding attributes For example only soundings which have had a tide correction or which were not marked as bad might be transferred A choice of additional sounding attributes such as timestamp accuracy factor etc can be transferred HIPS Hydrographic Information Processing System UNIVERSAL SYSTEMS LTD CARIS HiPS Functional Description 2 2 3 Sounding Filter A huge number of soundings is produced using multibeam technology The sounding filter carries out overplot removal to suppress all but a few soundings for display Ihe filter can be shoal biased or deep biased The program has the ability to maintain the original data densities in areas of interest eg around shoals wrecks etc
38. ptical that is already utilized option yes or no John Gillis Page 5 During QA calibration when you choose a new or change your choice of the second calibration profile it does not recompute the calibration display the profile QA calibration user select calibration lines should calculate all differences and display the results for better precision Track Plotter more flexibility in selecting plotting scales include 1 2000 ratio Include AO paper Problems with QA calibration software After running receptacle lines and collecting data in two buffers when calibration line was relocated graph indicated the data was empty Confusion exists as to whether the RP can be the CG for the roll and pitch axis This must be discussed AD PARSONS Head Marine Electronics Management Services Branch ec G Costello D Dinn J Wilson p s Please forward to Terje Moe for action and comments
39. ration du EM100 P2343 0 page 1 2 Aucune vidence d erreur en temps n apparait lors de la comparaison des valeurs de d placement entre deux jeux de lignes r ciproques sond es des vitesses diff rentes 5 Ensuite il s agissait de v rifier la pr sence d erreur azimutale gyro offset en comparant des lignes adjacentes sond es dans la m me direction Aucune erreur azimutale n apparaissait lors de cette proc dure 6 D autres lignes r ciproques Patch Test 2 a alors t obtenu avec des corrections de 0 5 et 1 2 int gr es dans l unit de l op rateur sous menu INSTALLATION MENU MOTION SENSOR MENU ROLL OFFSET amp PITCH OFFSET Une v rification rapide de la calibration l aide du QA unit nous a montr que les corrections taient appliqu es dans le mauvais sens rendant les erreurs d alignement plus importantes encore Cette confusion est survenue lors de l tablissement du signe des erreurs en fonction des informations fournies dans le manuel de l op rateur P2361E 0 page 14 7 Finalement un dernier jeu de lignes r ciproques Patch Test 3 ont t obtenues avec des corrections de 0 5 et 1 2 int gr es dans l unit de l op rateur OPU et les r sultats autant par le QA unit que par le post traitement des donn es ont d montr que ces corrections sont exactes en sens et en magnitude 8 Un deuxi me calcul de la moyenne a t fait sur le chiffrier EXCEL voir tableau en annexe
40. stem check for multibeam survey systems Cette m thode fut utilis e dans le pass pour les chosondeurs multifaisceaux des navires Louis M Lauzier et Frederic G Creed Malgr le fait que les types d appareils utilis s par NOAA different des n tres la m thode du Patch Test demeure encore la plus efficace pour d terminer les erreurs d alignement et de syst me de l chosondeur Une variante s est toutefois ajout e la proc dure ant rieurement suivie avec l emploi des fonctions de calibration offertes par l Unit de contr le de qualit QA unit Les d tails sur les lignes sond es se retrouvent dans le dossier Patch Tests Matthew ci joint M thodologie 1 Un premier jeu de lignes r ciproques Patch Test 0 nous a permis de constater en temps r el la pr sence d erreurs d alignement en tangage et en roulis pitch amp roll offsets Les fonctions de calibration du QA unit ne nous permettant pas d obtenir la valeur de l erreur en tangage tant donn que cette derni re peut se composer galement d erreurs en temps nous nous sommes content s de d terminer grossi rement la valeur de l erreur de roulis Cette erreur repr sente la diff rence d alignement entre le plan du navire et le plan de l inclinometre TSS 335 dans transversal et une valeur de 0 5 fut trouv e voir les impressions d cran dans le dossier Patch Tests Matthew Une erreur n gative signitie que le c t tribord se trouve au d
41. the under over voltage light was lit on the D650 module in the stepper logic unit The problem was traced to a bent tab in the fuse holder At the time that this happened pitch readings from the TSS sensor were varying 0 5 degrees However we did not get any transducer pitch error message on the operator unit screen After fixing the problem we tried turning off the stepper logic unit to see if this alarm would occur and it did not Does the current pitch angle of the transducer have to be outside a certain limit with respect to the pitch reading of the TSS for this alarm to occur What is our indication that the pitch motor is actually working short of going to the transducer room and checking it Can Simrad provide a short summary of information commands that are generated by the EM 100 operator unit program that are sent to the transceiver unit i e computed pitch angle for the next transmission etc November 12 1991 Since the failure of the stepper logic unit on November 9 it was reported that it has been necessary to reset the unit by powering on off a total of four times Sea conditions were very calm with roll value of approximately 1 0 degrees and pitch values of approximately 0 5 degrees Information on the stepper logic unit is very sketchy Is there additional information on adjustments in the stepper logic unit Also has Simrad received any other feedback on this type of problem ADHOC COMMENTS ON EM 100 FRO
42. y product of the regular gridded DTM a synthetic raster surface is produced which approximates the actual surface as defined by the x y and z values This surface is useful for quick plan view visualization of the surface The HIPS Hydrographic Information Processing System UNIVERSAL SYSTEMS LTD CARIS HIPS Functional Description appearance of the created surface is enhanced by the use of a simple lighting model 2 3 10 Produce Raster Summaries A function which produces a raster surface similar to that in 2 2 9 by binning is also available This very fast operation provides a quick assessment of survey coverage 2 3 11 Text and Symbolization Text and symbols can be added to plots and DTM visualizations to provide additional information or to provide terms of reference For further information about HIPS please contact Universal Systems at Universal Systems Ltd 270 Rookwood Ave P O Box 3391 Station B Fredericton New Brunswick CANADA E3A 5H2 Tel 506 458 8533 Fax 506 459 3849 HIPS Hydrographic Information Processing System UNIVERSAL SYSTEMS LTD ANNEXE D Calibration du EM100 sur le Matthew Du 2 au 15 novembre 1991 Conception Bay Terre Neuve par Andre Godin La m thode utilis e pour calibrer l chosondeur multifaisceaux EM100 du CSS Matthew est bas e sur les proc dures prescrites par le National Oceanic and Atmospheric Administration NOAA dans l article Patch Test a sy
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