Online user guide section 5
Contents
1. Background to GDA In 1992 as part of the world wide International GPS Service IGS campaign continuous GPS observations were undertaken on eight geologically stable marks at sites across Australia which form the Australian Fiducial Network AFN During this campaign GPS observations were also carried out at a number of existing geodetic survey stations across Australia These were supplemented by further observations in 1993 and 1994 producing a network of about 70 well determined GPS sites with nominal 500km spacing across Australia These sites are collectively known as the Australian National Network ANN The GPS observations at both the AFN and ANN sites were combined in a single regional GPS solution in terms of the International Terrestrial Reference Frame 1992 ITRF92 and the resulting coordinates were mapped to a common epoch of 1994 0 The positions for the AFN sites are estimated to have an absolute accuracy of about 2cm at 95 confidence while the ANN positions are estimated to have an absolute accuracy of about 5cm These positions of the AFN sites were used to define the GDA and were published in the Commonwealth of Australia Government Gazette of 6 September 1995 The positions of both the AFN and ANN sites were used to constrain a re adjustment of the Australian geodetic networks which included all observations from the previous AGD66 and AGD84 adjustments conventional observations added since that time and the extensi2. 2005 Character maximum combined length 96 Must provide one of Building tower name or street address Town geographic location 2005 characters Mandatory Datum AGD66 AGD84 or GDA94 Mandatory Coordinates as either As below for details Mandatory e Zone Easting Northing e Latitude longitude DD e Latitude longitude DMS Zone Easting Northing Zone two digits valid range 41 59 Easting six digits in metres Northing seven digits in metres Latitude should be south negative Longitude should be east positive Latitude longitude DD Decimal degrees Up to six decimal places Eg Lat 43 123456 Long 143 123456 Latitude longitude DMS Degrees Minutes Seconds To 3 decimal places Eg Lat 43 34 56 678 Long 145 45 567 345 Latitude should be south negative Longitude should be east positive Coordinate Source 2005 Surveyor GPS Map 1 100 000 Map 1 50 000 Map 1 25 000 Map 1 10 000 Map 1 5 000 Map 1 2 500 Mandatory addition values can be added by ACA if required Accuracy Precision Within 10 metres or Within 100 metres Mandatory Configuration 2005 Tower Rooftop centre Rooftop nominal reference Mandatory addition values can be added by ACA if required point Site Elevation Numeric Optional Site Manager Surname or Up to 50 characters Optional trading name Site Manager Given name s Up to 40 c
3. SITE NAME AND SITE CONFIGURATION EXAMPLES Individual towers at a site separated by more than 10m Tower Building Name Street Number Address Town Geographical Site Configuration Location CFA Tower BASS HILL Tower Centre NTL Tower BASS HILL Tower Centre Telstra CMTS Tower BASS HILL Tower Centre NTA Tower MT NARDI Tower Centre Localities town na mes and geographic features Tower Building Name Street Number Address Town Geographical Site Location Configuration 105 Miller Street NORTH SYDNEY As appropriate BHP House 11 Rundle Street ADELAIDE As appropriate 55 Edward Street CARLTON As appropriate Motorola Site DARK MTN where MTN is the standard for a mountain geographical feature As appropriate 11 Alfred Street CLEAR MOUNTAIN where mountain forms part of the town name As appropriate via Bourke DYNEVOR HOMESTEAD where the homestead is a gazetted location and via Bourke provides useful information As appropriate Survey Camp 15 km SW of DIRRANBANDI where the location has no recognised name and the nearest geographical location is recorded As appropriate 79 Building with a tower at each end of the building Tower Building Name Street Number Address Town Geographical Site Configuration Location North Tower 350 Elizabeth Street MELBOURNE Tower Centre South Tower 350 Elizabeth St
4. ce authorises the licensee to operate the service at the location specified on the licence If a licensee operates from a location not specified on the licence the licensee may be subject to regulatory action by the ACA Devices to be operated under a spectrum licence cannot be operated unless the location of the device is recorded in the Register of Radiocommunications 81 Licences If a licensee of a device operates from a location not specified in the register the licensee may be subject to regulatory action by the ACA Licensees It is the licensee s responsibility to ensure that the specified site ie the combination of coordinates site name site configuration accurately reflect an antenna s location as determined using the procedures outlined in this document Accredited Persons The responsibility of accredited persons is limited to checking to see if the supplied data is reasonable and asking the licensee licence applicant to check coordinates when in doubt An example of a reasonable test is whether the site name site coordinates and site configuration description are consistent ACA Frequency Assignment and Licensing The responsibility of the ACA is limited to checking to see if the supplied data is reasonable and asking the licensee licence applicant to check coordinates when in doubt An example of a reasonable test is whether the site name site coordinates and site configuration descriptio
5. haracters Optional Site Manager Phone number Up to 15 characters Optional Site Manager E mail 2005 Up to 50 characters Optional Contact Person Surname Up to 50 characters Optional Contact Person Given name s Up to 40 characters Optional Contact Person Phone number Up to 15 characters Optional Contact Person E mail 2005 Up to 50 characters Optional 88
6. llowing rules e That the information listed in section 10 Entering Radiocommunications Site Data into RADCOM is provided e There is no other site within 10m of the proposed new site e That in high and medium fee density areas coordinate source is a Surveyor s certificate or GPS and that the accuracy is 10m or 100m Note mobile sites used in spectrum licensing cannot be created online Online Site Deletion The deletion of an existing site in the RADCOM database using the accredited persons online submission system is subject to the following rules 83 No sites with devices attached can be deleted No mobile sites used in spectrum licensing can be deleted No site can be deleted that was created or updated in the last 30 days unless the user created or updated the site Online Site Updating The updating of an existing site in the RADCOM database using the accredited persons online submission system is subject to the following rules No mobile sites used in spectrum licensing can be updated Site manager and contact person details cannot be updated As this information is not publicly available it is unlikely that an accredited person would know what information would require updating Coordinates and site elevation cannot be updated for sites with devices attached No site can be updated with devices attached unless all the devices are spectrum licensing devices and the user is authorised to supply technical i
7. n are consistent Auditing and Quality Control of Site Data The ACA approach to ensure quality control of site data is to assume that the requirements and procedures of this document are being consistently applied and to audit site data as a part of the ACA audit program of frequency assignment certificates and through random site audits ENTERING RADIOCOMMUNICATIONS SITE DATA INTO RADCOM Information required to create a site in the ACA RADCOM database is outlined below More detailed information is at Appendix 2 Mandatory e Site Name which comprises of the fields building tower name street number name town geographic location Coordinate Datum Coordinates Coordinate accuracy precision Coordinate source Site Layout Configuration Optional e Site Elevation e Site Manager Surname or trading name e Site Manager Given name s e Site Manager Phone number e Site Manager E mail 82 Contact Person Surname Contact Person Given name s Contact Person Phone number Contact Person E mail Note that the ACA collects site contact details to assist with interference investigations and site audit activities Currently due the privacy requirements site manager and contact person details are not made available once collected as that information is supplied on the basis that it is not publicly available ONLINE SITE DATA MANAGEMENT The site data management facilities will be included in the Online Services for Accredited Pers
8. nformation for the licences that the devices are attached too No site can be updated that was created or updated in the last 7 days unless the user created or updated the site Coordinates cannot be updated if the new coordinates would be within 10m of an existing site e Ifthe coordinates are updated the precision o in high density fee areas must be 10m o in medium density fee areas must be if already 10m 10m otherwise ie if 100m or unknown 10m or 100m o in low density fee area must be either 10m or 100m 84 APPENDICES 85 Appendix 1 Site Data Conversion Purpose This Appendix provides information relating to Site Data and the conversion of this data into a standard information base within the RADCOM system Background and Explanation The Geocentric Datum of Australia GDA is the new Australian coordinate system replacing the Australian Geodetic Datum AGD GDA is part of a global coordinate reference frame and is directly compatible with the Global Positioning System GPS It is the culmination of more than a decade of anticipation and work by the Intergovernmental Committee on Surveying and Mapping ICSM and its predecessor the National Mapping Council NMC When the NMC adopted the AGD84 coordinate set in 1984 it recognised the need for Australia to eventually adopt a geocentric datum This was further recognised in 1988 when ICSM recommended the adoption of an appropriate geocentric datum by 1 January 2000
9. ons application in the next phase of the application due for release in early 2005 The online site data management facility will support site creation site updating and site deletion When creating a site online an accredited person will be required to state that the site has been created from information supplied by a licence applicant using the ACA s radiocommunications site data requirements specified in this document The online system will also allow an accredited person to request the ACA to assess submitted site information An accredited person may use that facility in cases where the site information provided by a licensee conflicts with information recorded in the ACA database and that conflict cannot be resolved using the ACA site data procedures Coordination of those assessments will be managed by the National Licensing and Enquires Centre in the ACA s Canberra Central Office The online system is only available to accredited persons who have registered to use the system More detailed information about the online system including how to register is contained in the online services user guide available on the monthly Radiocommunications Record of Licences RRL Database on CD ROM or by contacting the ACA s Communications Operations and Service Group Business Systems Integration Team BSIT aca gov au Online Site Creation The creation of a new site using the accredited persons online submission system is subject to the fo
10. reet MELBOURNE Tower Centre Sites on sides of buildings The preferred approach is to use a common site name and antenna height to distinguish where the antenna is located This is consistent with the approach that the building is the antenna support structure Tower Building Street Town Geographical Site Site Antenna Name Number Address Location Configuration Height Height North Face 286 PERTH Nominal 100 10 Victoria Street North Face 286 PERTH Nominal 100 40 Victoria Street 80 Buildings with towers and microwave dishes that are grouped together Tower Building Name Street Number Address Town Geographical Site Configuration Location Bourke Place 600 Bourke Street MELBOURNE Tower Centre 120 Collins Street Tower Centre 101 Collins Street MELBOURNE Tower Centre Left picture Kk Left tower in right picture Right tower in right picture Nominal location terminology for sites on buildings Sites on Sides of a Building Sites on Top of a Building North Face North SE Cnr South Face South SW Cnr East Face East NE Cnr West Face West NW Cnr or as appropriate depending on orientation of building Where the above terminology is not used it should be assumed that the site is in the centre of the building RESPONSIBILITIES FOR SITE DATA Overview An apparatus licensed radiocommunications servi
11. ve GPS networks established by the State and Territory authorities at about 100km spacing between the ANN sites This resulted in a data set of more than 70 000 observations and produced GDA94 coordinates at almost 8 000 stations These GDA94 coordinates are now used by the State and Territory authorities to adjust their subsidiary survey networks onto GDA 86 GDA and AGD ITRF92 on which GDA is based was realised using Very Long Baseline Interferometry VLBI GPS and Satellite Laser Ranging SLR observations at 287 globally distributed stations However the coordinates for Johnston the original station for the AGD were based on a selection of 275 astro geodetic stations distributed over most of Australia The adoption of this option and the best fitting local ellipsoid the Australian National Spheroid ANS meant that the centre of the ANS did not coincide with the centre of mass of the earth but lay about 200 metres from it Hence the GDA94 coordinates of a point appear to be about 200 metres north east of the AGD coordinates of the same point The precise size and orientation of the difference will vary from place to place Datum Data and the ACA The Radcom database uses AGD66 as the basis for its site information and consequently all site information is stored using this datum and printed to licence documentation where applicable Computing Services have changed the Location Management frame within the RADCOM application that
12. will allow the entering if site information in Zoning Easting Northing Decimal Degrees and Degrees Minutes Seconds in AGD66 AGD84 and GDA94 Where site coordinates are entered using GDA94 the application will use a formulae known as Molodensky s Formulae to convert the coordinates into AGD66 to be stored within the GIS and store the original GDA94 coordinates in new fields within the existing site table in RADCOM Similarly when site coordinates are entered in AGD84 the application will firstly use Molodensky s formulae to convert the coordinates to GDA94 to be stored in the new fields within the existing site table and again to convert the GDA94 coordinates into AGD66 to be stored in the GIS The ACA Form RF77 has been amended to allow clients to stipulate what Datum reference they have used when providing site information The RADCOM site management screen will allow for the selection of the Datum specified and the entry of subsequent details Sometime in the future all AGD66 coordinates within RADCOM will be converted to GDA94 However before then it should be noted that AGD66 will continue to be the Datum of choice within RADCOM 87 Appendix 2 Site Data Entry Requirements The following data is required when creating a new radiocommunications site Fields to be introduced in the 1 quarter 2005 are indicated as 2005 Mandatory Field Values Comments Building tower name 2005 Street address
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