Step 1 - Geosystem
Contents
1. Figure 2 7 DASView software Adjust LUT window Select Edit Adjust LUT from the main menu The Adjust LUT window will appear Select required modifier from the Current modifier list box 1 and color channel 2 Set value for selected modifier for example Gamma 0 6 and press Push 3 button to save the modifier in stack One can add as many modifiers as necessary in that way Once added to stack any modifier is available for editing Select required modifier in modifier list 5 to change its value It can be removed by Delete 4 button if necessary Press Clear all 6 button if you want to remove all modifiers from the stack Use Save as and Load 8 buttons to save or load current modifier stack In most cases modifier stack is created by DASCorrect program and does not need to be adjusted by user However it is possible to edit existing or create new more appropriate stack Press Save as 7 button while holding Ctrl key to generate new LUT files based on current stack LUT files will be used by DASRectify software during rectification process Appendix A A 1 3 DAS 1 project structure Each separate 3 DAS 1 project is represented by one folder named in YY MM DD_hh mm ss format for example 07 01 20 13 00 00 This folder contains as many subfolders as flight lines in the flight mission i e one subfolder for each strip These subfolders are named Strip XX where XX order number starting2. connect with port COM1 of FMS Iptop 1 2 Turning on sequence AEROCcontrol and CCNS4 systems are not products of SPE Geosystem Please refer to manufacturer to get installation manual e Move switch on the right side of the rack to position 1 Figure 1 19 Main Power Switch Figure 1 19 Main power switch e Turn on scanner moving switch Power on its case to position 1 Figure 1 20 Power Switch Power Indicator Figure 1 20 Power switch and indicator of the scanner Power indicator and 5 indicators of scanner internal voltages have to light up Figure 1 21 Um Indicator 9V Indicator 5V Indicator 3 3V Indicator 1EV Indicator Figure 1 21 Indicators of scanner internal voltages e Open protective cover on control computer with computer case key and press Power button for a short time Figure 1 22 Power ON Buttor HDD activity LED Reset Buttor Cover openec Figure 1 22 Cover in open state and Power button RAID array and operators display will be switched on with control computer automatically e You can start working after OS loading complete 1 3 Turning off sequence A AEROCcontrol and CCNS4 systems are not products of SPE d y Geosystem Please refer to manufacturer to get installation manual Having finished mission e Turn off scanner moving switch on its case to position 0 Figure 1 20 e S
3. Height above ground 900 Height unit 0 Speed over ground 180 Speed unit 0 Focal distance 110 Camera angle 0 Scale 8181 82 Resolution 7 36 Map 1 Sync data First sync line 18 Event number 1 Event frequency divisor 72 Sync data section is intended to synchronize image lines with attitude data First sync line is only necessary parameter if using Strip atf file To find the attitude record for a corresponding image line use the following formula attitude record_index image_line_index first_sync_line For example if First sync line parameter is 18 the first attitude record in Strip att file should correspond to image line with index 18 starting from zero The rest two parameters are necessary if you want to process raw navigation data by yourself Event number states for index of first event which corresponds current strip within the whole flight mission Event frequency divisor shows how many times line frequency is greater then event frequency To obtain time value for each image line one should interpolate event time values map Map file contains thumbnail of saved image for quick review and navigation with Sea exe Scale factor of thumbnail image is 48 Map file is plain grayscale image an array of pixel values without header Each pixel is represented by 1 byte value and has value in range 0 255 bbs This file is present only if lossless compression is used File is
4. Time left 01 52 50 AAA Used 237 3 GB 341 8 GB Figure 2 3 DASControl software camera sheet Press the Autotune 8 button to adjust video signal amplification lt will take some time to complete Use and buttons 9 to adjust amplification manually Changing it within current camera sheet will affect the rest cameras Watch histogram and image waterfall Amplification changes are reflected there immediately 2 2 3 On the flight line When you are about to enter new flight line start image data recording by pressing Start writing button 10 When current flight line is finished stop image data recording by pressing Stop writing button 70 Note if using the flight management system FMS it will start stop data recording automatically Repeat if necessary lf flight mission consists of flight lines of different altitude and speed switch to Flight sheet to adjust these values every time they change frequency and exposition time Therefore it is necessary to adjust video signal amplification every time flight conditions are changed i Changing altitude or speed values causes camera to change scan When the last flight line is done close program turn off computer RAID and camera before landing A It is highly recommended to take off and land with turned off computer and RAID since jerks can damage hard disks 2 3 Processing the navigation data with POSExtract software Standard output of
5. X forward along flight direction Y right Z downward Step 2 Control computer installation Shocks and increased vibration can cause failure or its frozen in damages Please perform all operations slowly and carefully A To install control computer on board use rack with damping elements e Move out guides from the rack coincide with guides on control computer case and move computer inside the rack up to the stop Figure 1 5 Be careful during guide coincidence Rough mounting can cause damage of guide bearings Computer Case Rack s Guide Rack Guide Figure 1 5 Guide of computer case e Fix computer inside the rack with four screws on front panel Figure 1 6 Rack Fixing Holes Fixing Holes Computer Case Figure 1 6 Fixing holes of computer case Step 3 RAID array installation Shocks and increased vibration can cause failure or its frozen in N damages Please perform all operations slowly and carefully A To install RAID array on board use rack with damping elements e Unscrew two side fixers and move out in out table from the rack e Place RAID array onto the table coincide with fixing holes and screw fixing screws Figure 1 7 RAID Array p Fixing Screws Table Figure 1 7 RAID array mounting on in out table of the rack e Move in out table with RAID array up to the stop and fix it with two side fixing screws Figure 1 8 Rack Fixing Screws Figure 1
6. size lt also allows exporting defined image fragments and applying radiometric image correction in 16 bits per channel mode The following screenshot shows program s main window F Dayton Strip_09 Backward B raw _ EX File Edit View Navigation Options Help SH QQ UiA ZO MAI Dw i Line 30092 A A eu l NP Figure 2 6 DASView software main window The thumbnail at the left edge of the window displays whole strip image and can be used for quick navigation Most of the program s functionalities like navigation zooming selecting an area and exporting are similar to common image viewer software However DASView uses slightly different way to apply radiometric correction There is a set of standard modifiers that can be applied to the image It includes brightness contrast gamma curve equalize level and logarithm Each of them except logarithm has its own parameters and can be adjusted manually These modifiers do not update RAW image file they affect currently displayed image only Afterwards these modifiers are applied during rectification lt is possible to add as many modifiers as necessary therefore it s important to define the order of applying Modifier stack is used for these purposes Modifiers will affect image in the order they was placed in stack Figure 2 7 describes main control elements for operating with modifier stack Modifier stack Current modiffer Auto 6 Clear all 7 4 8
7. to preserve original 14 bit depth and gives possibility to pick the best parameters like gamma brightness contrast etc while post processing DASCorrect software chooses optimal radiometric parameters based on the statistic information lt also creates calibration files for dodging and CCD sensor uniformity Be DASCorrect Project settings Strip_01 Strip_02 M Strip_03 Strip_04 M Strip_05 Strip_06 Strip_07 M Strip_08 Progress Process Projectfolder F 07 02 10_ 12 54 58 Settings v Generate CLE files Y Generate LUT files Options Figure 2 5 DASCorrect software main window Follow next steps to process a project Press Browse button and select the root folder created by DASControl software containing all strip s images for example D 07 06 25_13 00 00 Program will display all projects strips You can exclude some from processing if necessary Uncheck corresponding checkbox to do this Uncheck corresponding checkbox if you don t want to create calibration files CLB or look up table files LUT Press Process button to start Processing time depends on project s size and HDD speed The program will create CLB and LUT files for each RAW file r clb r lut g clb g lut b clb and b lut in the same folder These files will be used by DASRectify program 2 5 Viewing image with DAS View software DASView software is a tool to view RAW image files of unlimited
8. used by Sea exe and DASImage library for quick access to compressed images and does not require to be processed by end user clb This is binary line sensor calibration file It contains factors which are to be applied multiplied to CCD pixels Each factor is represented by float value 4 bytes not less then 1 0 Since file contains 1 value for each image line pixel its size is always constant 8002 pixels 4 bytes 32 008 bytes lut Since raw file is always store raw unadjusted image lut file is used for radiometric correction before displaying image lt contains lookup table for whole range of pixel brightness values This binary file consists of 2N values where N bit depth of an image can be retrieved from inf file Each value is 2 bytes unsigned value within range 0 2 1 Value Index Default cc This ANSI file is used to create corresponding LUT files It contains information concerning different color correction modifiers like brightness contrast gamma etc Use Sea exe to edit Default cc and create LUT files Appendix B Detailed list of components Quantity Name 1 _ Digital airborne scanner 3 DAS 1 _ _ o Z o Z o o oS 2 Mass compensator Z SSS O 3 IMU adapter plate o A 10 USB mouse compatible with OS Windows FMS Laptop stand EA 12 Computer case key A 13 14 FCS NMEA cable CCC 15 FCS cabe oS A 16 NMEA cable o o U o 17 SCSiLVDexteriorcable A Scanner Power cable oS
9. 8 Fixing screws of the in out table Step 4 Operator s display installation Operator s display is mounted to the rack with Velcro To fix safely you should coincide display table with contours of rack upper part and push tightly Step 5 General cabling and connection of board power Flowchart of scanning system connections including POS AEROcontrol and FMS CCNS4 by IGI GmbH is shown in figure 1 9 IMU mn ae EVENTS meee 3 DAS 1 components INP A AAA SYNC IMU GPS navigation IGI a SCANNER 3 AEROcontrol ate 3 DAS 1 eae aie 28 ane Power connection ii gt GRABBER i Signal connection i NME Am lt l I iX m Optional connection i F CSu O 3 I i R64 CL1 COMA COMB i Ree m Y G A gt l or CAMZ DC IN DAS COM 1 jiff TouchScreen Operator s CCNS4 i Control 46g Monitor Power TOUCH SCREEN con 4 aar Computer i we LCD PANEL i AG a E 1 COMC LAN SCSI I A o Tea E i 2 2 2 i I 5 g m D 1 I e 8 O eee 5s m i l Gox KEYBOARD I 28 VDC i 8 Y I RS 232 LAN SCSI I om on ol IN e I i 5V 12V e Main z N RAID ARRAY sa lz I Power Cable amp ARC6020 PE i amp m MOUSE Figure 1 9 Flowchart of system connections Spare slot on power splitter is available to supp
10. Digital Airborne Scanner 3 DAS 1 User Manual 3 DAS 1 UM B 3 d d T gt Gir soi pis i D e 4 ye Y a st As F e y br 4 p A TA dl e DAT ie e y gt ll IE T Y f z y Camera model 3 DAS 1 Manufacturer GeoSystem 600 letia 25 Vinnitsa 21027 Ukraine www vingeo com 3 DAS 1 User Manual General notes Please read this manual carefully before you start working with any equipment of Digital Aerial Scanner 3 DAS 1 Please do not remove and repair any scanner elements by yourself This can cancel warranty Third party brands and names are property of their respective owners Any dysfunctions of third party components which are parts of the system are not described in this document To remove such faults please refer to service center of corresponding manufacturer Due to rapid changes in technology some specifications might be out of date before publication of this manual Table of Content Introduction Structure and principle of operation Part 1 3 DAS 1 hardware description 1 1 Hardware installation Step 1 3 DAS 1 scanner installation Step 1 1 3 DAS 1 to PAV30 adapter installation Mass compensator installation Step 1 2 Scanner mounting on top of the mass compensator Step 1 3 Inertial Measurement Unit IMU mounting on 3 DAS 1 scanner Step 2 Control computer installation Step 3 RAID array installation Step 4 Operator s display
11. Map inf This small ASCII file can be used to operate with map files The following example describes file structure 3 166 2681 49 219090 28 580882 1177 60 49 231968 28 529308 1180 01 raw Raw files contain saved the image itself File format depends on the used compression method Read the corresponding inf file in order to find out compression method or any other image related information Only non compressed file format is discussed below Use specialized library to read packed or compressed file Non compressed raw file is a plain grayscale image an array of pixel values without header Each pixel is represented by 2 byte value and has value in range 0 16383 For example one can calculate size of a non compressed raw file with image width 8002 pixels and image height 10 000 pixels Size Width Height BytesPerPixel 8002 10 000 2 160 040 000 bytes Inf This ASCII file contains all necessary information to process the corresponding raw file It have a standard format of Ini file for Microsoft Windows so it can be accessed with Win API functions like GetPrivateProfileString The following example gives some explanations of file fields meaning Raw file information v0 83 GeoSystem c 2004 Original scan date 29 10 2006 10 44 33 Image properties Width 8002 Height 43680 Color depth 14 Compression 0 Pixel size 9 Amplification 15 3 dB Flight properties
12. Scanner Power cable Control Computer Power cable bh bh h a eS 18 19 0 1 RAID Power cable 22 23 24 25 26 2 LVD SE terminator 28 10 A fuse A 29 Scanner specification 30 Calibration Certificate 31 User s manual for AEGIS monitor This users manual 32 This user s manual O
13. any navigation systems is represented by flight trajectory and orientation data for whole flight mission The main purpose of POSExtract program is to extract useful navigation data which corresponds to recorded strips It also interpolates navigation data to get 1 attitude record per each image line POSExtract creates set of attitude files which are required for rectification process The program s interface is quite simple lt is represented by 3 fields to be filled by user F POSExtract settings Projectfolder FA07 02 10_12 54 58 E POS file FAsbet_01 out E Eventfile FAeventl_01 dat Progress Start Figure 2 4 POSExtract software main window Press Browse buttons to select the following Items Project folder the root folder created by DASControl software which contains all strip s images for example D 107 06 25 13 00 00 POS file the main navigation file created by navigation post processing software Event file file containing time stamps to synchronize image lines with navigation data Press Start to begin extraction Usually it takes less then a minute to complete The program will create set of Strip att files one in each strip folder lt Project folder gt lt Sitrip NN gt Strip att These files contain navigation information for corresponding strips 2 4 Processing image with DASCorrect software The DASControl software stores scanned image in raw format That allows
14. ay installation Step 4 Operators display installation Step 5 General cabling and connection of board power Step 6 Connection of Flight Management System laptop optional A Please disconnect power when cabling Step 1 3 DAS 1 scanner installation A Some elements of the scanner weigh more than 15 kg Therefore at least 2 persons should install the system A To avoid damaging of optical system please never put the scanner with AN its lenses down on soft surfaces Step 1 1 3 DAS 1 to PAV30 adapter installation Mass compensator installation Adapter Mass compensator is needed for stabilizing mount PAV30 usage e Mount mass compensator housing on stabilized platform guiding by Flight Direction sign Be sure that flanges on the moving ring coincide with slots on the mass compensator housing Fix it with four fixing screws Figure 1 1 Fixing Screws mF ight directio n Figure 1 1 Mass compensator housing e Put counterweights and top plate into the housing in sequence shown on figure 12 Top plate 4 7 kg Counterweight 3 5 7 kg Counterweight 2 2x 4 2 kg Counterweight 1 2x 9 7 kg Frame 23 3 kg Flight direction Figure 1 2 Sequence of mass compensator assembly Be sure that all components of the mass compensator are fastened with fixing screws securely Mass of assembled compensator is 61 4 kg Step 1 2 Scanner mounting on top of the mass compensator The scanner include
15. elect Turn off item from Start menu on control computer and wait until OS will finish its work RAID array and operators display will be switched off with control computer automatically e Move switch on the rack to position 0 for board power disconnection Figure 1 19 1 4 Transferring data to other computer Be sure that control computer is turned off Release RAID array in out table having unscrewed 2 fixing screws on front of the rack and move it out up to the stop Figure 1 23 Fixing Screws HS a he Mapu iy Geosystem uM eg ELA Figure 1 23 Fixing screws of the in out table Disconnect all cables on RAID array back panel i e SCSI cable power cable and ETHERNET cable if connected EA 220 110 V ee AC IN BV 12V Oo DC IN AC ON OFF SN X LAN 220 110 V SCSIIN SCSIOUT K ejector RS 232 Figure 1 24 RAID array back view e Remove RAID array from in out table having unscrewed 4 fixing screws Figure 1 25 RAID Array pe Fixing Screws Table Figure 1 25 Removing RAID array from in out table of the rack To connect RAID array to office computer you should have the next 1 AC power cable with Euro or US plug according to socket type in your office see list of components supplied 2 Adapter for external SCSI devices with drivers required not supplied 3 Exte
16. from 01 Thus usual project have the following look 07 01 20 13 00 00 A Strip 01 Strip 02 Strip 03 Strip 04 Each Strip folder contains 3 subfolders Forward Nadir and Backward to save image from respective cameras lt also contains Strip att and Map inf files E 07 01 20 13 00 00 Strip 01 E Strip 02 Forward Nadir Backward El Strip att El Map inf Strip_03 A Strip_04 Camera folders contain set of files with the same name and different extensions raw Inf map bbs clb ut This set is duplicated for each color channel R G and B There is also one separate file named Default cc E 07 01 20 13 00 00 Strip_01 E Strip_02 Forward amp Nadir E R raw E R inf El R map B R bbs 3 R clb R lut Default cc Backward E Strip att El Map inf Strip_03 A Strip_04 A 2 Files description Strip att This binary file represents navigation data for respective strip lt contains set of attitude structures each structure corresponds to one image line Number of records is not less than the number of saved image lines Synchronization of attitude records and image lines is discussed in x inf description The attitude record has the following form sizeot T AttitudeRecord 6 8 48 bytes struct TAttitudeRecord double latitude longitude altitude roll pitch heading
17. installation Step 5 General cabling and connection of board power Step 5 1 Connection of control computer Step 5 2 RAID array connection Step 5 3 Connection of scanner operator s console Step 5 4 Scanner connection Step 6 Connection of Flight Management System laptop optional 1 2 Turning on sequence 1 3 Turning off sequence 1 4 Transferring data to other computer Part 2 DAS Software operation manual 2 1 General information 2 2 Recording image with DASControl software 2 3 Processing the navigation data with POSExtract software 2 4 Processing image with DASCorrect software 2 5 Viewing image with DASView software Appendix A 3 DAS 1 project structure Appendix B Detailed list of components Introduction 3 DAS 1 is a pushbroom airborne scanner designed for high resolution aerial survey with simultaneous image creation by three color channels Nadir channel captures ground surface images just below the aircraft and is used for automated creation of orthophoto Forward and backward channels capture images with 26 and 16 angles along the flight direction providing permanent triple overlap for whole area scanner 3 DAS 1 allows you to increase productivity and accuracy of digital topographic maps based on aerial survey due to elimination of analogue photo processing and their conversion to digital form for sequential work on digital photogrammetric stations 3 DAS 1 scanning system consists of 3 DAS 1 scanning unit DAS Co
18. ly POS and FMS Please keep polarity during connection of board power Otherwise it can N cause partial or full system failure Fa Check all connectors and cables in order to find damages before their connection Step 5 1 Connection of control computer e Connect COM A port of control computer with CAM1 or CAM2 port of CCNS4 unit via FCS cable e Connect COM B port of control computer with AUX port of AEROcontrol unit via NMEA cable e Connect Control Computer Power cable to 28 V DC IN input of the computer Figure 1 10 IGI AEROcontrol EVNT UX a mN ME A o CO O IGI CAM CCNS4 or CAM2 Control Computer Power POWER SPLITTER iH Figure 1 10 Connection of control computer R64 CL1 COMA COM B VGA or DVI 28 V DC IN DAS COM 1 Control pe 5V 12V PS 2 DC OUT Computer or USB PS 2 or USB COM C LAN SCSI Power connection Signal connection m Optional connection General view of control computer back panel is shown in figure 1 11 PS 2 12V MOUSE LPT1 LAN DC OUT VGA COMA C R64 CL1 IS O SO xO E E 5 l O 0 O fe 5V 12V 28 V PS 2 DC OUT DCIN KEYBOARD USB1234 COM1 1394 DV COMB D R64 CL2 SCSI Figu
19. nection AEROcontrol 3 DAS 1 28 V AUX DC IN m Optional connection GRABBER E y Z xt y R64 CL1 COMA COM B VGA or DVI 28 V DC IN DAS cony Control peou 5V 12V PS 2 DC OUT Computer or USB PS 2 or USB COM C LAN SCSI D O D Cc Cc O fh E 5 th O 0 iH Figure 1 17 Scheme of 3 DAS 1 scanner connection Step 6 Connection of Flight Management System laptop optional lf CONS4 system component is not available for any reason you can connect portable computer FMS laptop with preinstalled specialized software as Flight Management System For that please do the following Connect port AUX of AEROcontrol module COM A and COM B ports of control computer and COM1 port of FMS laptop via FCS NMEA cable Figure 1 18 EVNT IGI AEROcontrol Power connection e Signal connectior m Optional connection R64 CL1 2E DC IN DC COM C COMA COM E DAS Control BN 12 e Computer LAN ses CON 1 12 VDC PS 2 or USE PS 2 or USE FMS Laptop CON 1 Figure 1 18 Connection of Flight Management System laptop e Connector marked NMEA connect with port AUX of AEROcontrol e Connector marked COM A connect with port COM A of control computer e Connector marked COM B connect with port COM B of control computer e Connector marked FMS
20. ntrol Computer RAID array and operator s display Figure1 Figure 1 Components of 3 DAS 1 scanning system Structure and principle of operation The scanner is an airborne optic electronic device designed to scan ground surface from an aircraft board for obtaining the digital images in real time mode Composition e Scanner is a three channel system each channel of which contains light sensitive CCD sensor optic mechanical system electronic system to control and signal conversion Figure 2 Forward Lens IR Filter gt CCD 2x8000 3xADC 14 hit f 110 Camera Link Up to 120 MB s Nadir Data Flow Lens aie EN CCD 3x8000 3xADC 14 hit Multiplexer f 110 IMU GPS SYNC Backward Lens a E f 110 A Clock generator 3C 6C MHz 3x8NNN 3xADC 14 hit IR Filter _ _ 3 DAS 1 Figure 2 Flowchart of 3 DAS 1 scanner e Control computer receives image data from the scanner preprocesses it and transfers it to RAID array Also it is used to adjust calibrate and control scanning modes e Operator s display shows scanned image in real time mode and controls scanner adjustment calibration and operation e RAID array is high performance protected RAID array of huge capacity to gather image data during the flight mission and their t
21. ransportation for processing to your office Figure 3 SCANNER 3 DAS 1 Parts includec into delivery mum Signal connectior gt Image Nata Contro a DAS Control Computer m V C A Operator s TOUCH SCREEN fmc pa LCD PANEL lt mace Data RAID Array Figure 3 Flowchart of 3 DAS 1 scanning system Position and Orientation System POS like Applanix POS AV or IGI AERO control also Flight Management System FMS like Applanix POSTrack or IGI CCNS4 and stabilized mount like ASP 1 or Leica PAV30 for attitude stabilization are required for normal operation of scanning system Figure 4 IMU Se Position and Orientation System POS Flight Management System FMS NMEA eC IMU fe ENT Sm SCANNER 3 DAS 1 Image Data Control E DAS Control Computer 3 DAS 1 components IMU GPS Navigation System components mum Signal connection m vc gt facon n fm mage Data RAID Array Operator s TOUCH SCREEN LCD PANEL Figure 4 Flowchart of 3 DAS 1 scanning system including POS and FMS Part 1 3 DAS 1 hardware description 1 1 Hardware installation To install scanning system please do the following Step 1 3 DAS 1 scanner installation Step 2 Control computer installation Step 3 RAID arr
22. re 1 11 Control computer back view Step 5 2 RAID array connection e Connect SCSI IN port of RAID array ARC6020 with SCSI port of control computer via SCSI LVD cable e Connect LVD SE terminator with SCSI OUT port of RAID array e f configuration of RAID array controller is required connect RAID array with control computer via ETHERNET cable e Connect SV 12V DC IN input of RAID array with 5V 12V DC OUT connector of control computer Figure 1 12 Power connection a Signal connection m Optional connection R64 CL1 COM A COM B VGA or DVI 28 V DC IN 5V 12V DC OUT COM C DAS Control sca Computer 2 Zz COM 1 PS 2 or USB PS 2 RAID C 5V 12V DC IN RS 232 2 zZ RAID ARRAY ARC6020 lt ETHERNET gt z9 f SCSI LVD SCSI OUT TERMINATOR LVD SE Figure 1 12 RAID array connection General view of RAID array back panel is shown in figure 1 13 220 110 V AC IN BV 12V 1 O DC IN AC E ON OFF A Q O LAN 220 110 V SCSIIN SCSIOUT K gejeco RS 232 Figure 1 13 RAID array back view Step 5 3 Connection of scanner operator s console Connect VGA cable of display with control computer Connect Touchscreen cable of display to COM1 port of control computer Connect di
23. rmed by set of specialized programs provided with the camera The process is semiautomatic and requires minimum of user interference lt also involves usage of GPS IMU post processing software POSPack AEROoffice etc The workflow can be described by the following diagram AE A ee GPS IMU post processing software CSSS Event time om ae i 3 stamps a aw image pe e a a 1 O es ee 1m _ _ _ _ _ _ Calibration and ee Strip attitude files e LUT files a _ mee gt A 7 _ _ Geo referenced i su rectified image z 7 j Sem mes 1 0 Figure 2 1 DAS image workflow Thus whole process can be divided into following steps 1 Recording image DASControl software and navigation data Navigation software page 35 2 Retrieving high accuracy trajectory and orientation GPS IMU post processing software 3 Extracting attitude for the each recorded strip POSExtract software page 36 4 Creating calibration and LUT files DASCorrect software page 37 5 Rectifying image DASRectify software To view raw image data use DASView software Review corresponding chapters for detailed description of each step 2 2 Recording image with DASControl software The main purpose of DASControl software is to set up camera and record image during flight mission The program s in
24. rnal SCSI cable it is analogue to component supplied If your cable has Terminator impedance matcher you should remove AN terminator installed on SCSI OUT port of RAID array e Put RAID array on plane and solid surface e Place power loopback to 5V 12V DC IN connector of RAID array Figure 1 26 Power Loopback Figure 1 26 Power loopback in 5V 12V DC IN connector e Be sure that value set by switch on RAID array back panel corresponds to voltage in AC network in your region Both variants are possible 110V or 220V Figure 1 27 Input Power Voltage Switch Selector RAID Array i A md ES A Figure 1 27 Back panel with voltage selector and input power switch Connection to AC network with incorrectly set voltage value can cause frozen in damage of the RAID array Connect SCSI IN port of RAID array with corresponding port of office computer Connect RAID array to AC power using AC power cable Move switch on back panel of the RAID array to position 1 Figure 1 27 Turn on RAID array by pressing Power button on front panel and wait for it s initialization to be finished An IP address will be shown on LCD of the RAID array when initialization complete e Turn on computer After OS loaded you can transfer data from RAID array via copying Part 2 DAS software operation manual 2 1 General information DAS image recording and processing workflow is perfo
25. s highly recommended NOT to use RAID as storage for previous mission s data as well as any other information It is advisable to start new mission with empty formatted RAID to avoid data fragmentation since it cause speed degradation and stop writing the data It is highly recommended to take off and land with turned off computer and RAID since jerks can damage hard disks 2 2 2 After take off Please refer to corresponding manuals if you use POS system to initialize the system properly Turn on the computer and the camera Run DASControl program Press Start grabbing button 7 Switch to Flight sheet 7 DAS Demo mode Forward 250 Nadir E Backward 3g Flight S Files Line rate Sgro Current line rate 452 7 Hz Q Speed over ground E 200 km h E 137 329 km h 8 Height above ground Time left 00 02 40 Used 86 4 GB 91 8 GB Figure 2 2 DASControl software Files sheet Use and buttons to set scheduled altitude 8 and flight speed 9 Values of altitude and speed are used to calculate appropriate scan line frequency lt is obviously that aircraft is unable to maintain constant values of its altitude and speed during flight line Therefore the average altitude and the average speed should be set Switch to one of camera s sheets Forward Nadir or Backward Forward E Nadir E Backward Flight Q Files Buffers Stats Max fullness 0
26. s shock sensitive elements Please perform all AN operations slowly and carefully e Mount 3 DAS 1 scanner on mass compensator guiding by Flight Direction sign e Be sure that the scanner is in its unique position and fasten it with three fixing screws Figure 1 3 Flight Direction Sign Fixation Screws o Fixation Screw Fixation Holes Fixation Hole as light direction gt Figure 1 3 Mounting of the scanner on top of the mass compensator Step 1 3 Inertial Measurement Unit IMU mounting on 3 DAS 1 scanner A Please avoid scratches on IMU adapter plate lt can cause changing of AN IMU position relative to scanner optical system Mount IMU on plate on top of the scanner as It s shown in figure 1 4 e Remove IMU plate unscrewing four fixing screws e Mount IMU onto IMU plate guiding by Flight Direction sign e Mount IMU plate back on top of the scanner and fix it with four screws IML IMU Plate Flight Direction Sign Fixing screws Fixing screws light direction Figure 1 4 IMU mounting on 3 DAS 1 IMU is not a product of SPE Geosystem Please refer to manufacturer to get installation manual Coordinates of IMU navigation center relative to the point of PAV30 platform axes intersection when mass compensator used for several IMU models are given in table 1 1 Table 1 1 Coordinates of IMU navigation center Applanix LN200 With case Without case mm mm Axes direction
27. splay power cable to 12V DC OUT socket of control computer Connect keyboard and mouse to control computer if required Figure 1 14 Power connection a Signal connection m Optional connection R64 CL1 COMA COM B VGA or DVI 28 V BEN DAS COM 1 12 V Control DEC 5V 12V PS 2 DC OUT Computer or USB PS 2 or USB COM C LAN SCSI m G A aff TouchScreen Operator s Monitor Power gt TOUCH SCREEN e A LCD PANEL ny ny ny ny ny ny ny ny i I I l ken KEYBOARD I I I I I I I I I askna MOUSE Figure 1 14 Connection of scanner operator s console Step 5 4 Scanner connection e Connect GRABBER port of the scanner with R64 CL1 port of control computer via CAMERA LINK cable e Connect IMU GPS SYNC output of the camera to EVNT INP input of POS AEROCcontrol via EVENTS cable Figure 1 15 SA Fal M A GRABBER Interface N A IMU GPS SYNC output Figure 1 15 Scanner GRABBER and IMU GPS SYNC interfaces e Connect Scanner Power power cable to 28 V DC IN input of the scanner Figure 1 16 ie La D 2 V DC IN gt 10 Figure 1 16 Scanner power connector and fuse Scanner connection scheme is shown in figure 1 17 IMU Power connection EVNT IMU GPS INP fs EV ENT S SYNC IGI SCANNER Signal con
28. terface is designed for use with touch screen it allows to perform all necessary operations without keyboard and a mouse The program creates a project folder in YY MM DD_hh mm ss format to save all taken image data This folder is used by DASCorrect and DASRectify software afterwards Every new flight mission should be started within new project folder Following step by step instructions describe the software s principle of operation 2 2 1 Preliminary preparation before take off Turn on the computer and the camera Check system operability make sure the DASControl program is running with no warning messages Select Files sheet DAS Demo mode Forward Nadir Backward 3g Flight amp Files Camera Bit depth 1 f Forward Nadir Backward Compression Project Project folder d 106 05 06_14 43 181 Data flow 46 3 MB sec Number of stripes 0 162 9 GB hour Total time 00 33 48 N ject ee Time left 00 01 59 5 6 Time left 00 01 59 Used 86 4 GB 91 8 GB Figure 2 2 DASControl software Files sheet Make sure the current settings are correct o Check all required cameras 1 o Select preferred bit depth for each camera 2 o Select required color channels 3 o Select required compression method 4 Make sure RAID has enough free space for new mission data 6 Press New project 5 button to create new project folder Turn off the computer It
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