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A permanent GPS station was installed at the French base in Antarctica : Dumont d'Urville in "Terre Adélie". This station is operationnel since end of december 1997, and provide daily files of 24 hours continuous measurements (Phase and codes on both frequencies) with sampling rate of 30 seconds since then. The data are archived and accessible through specific request to one of the partners involved (see section 9 of SITE INFORMATION FORM).
The station also operates a differential GPS (DGPS) broadcasting system. RTCM-104 peudo-range corrections are computed and transmitted in UHF (400 MHz). The radio antenna is installed on top of a 72 meters height mast, providing coverage of a 30 km wide zone. The system provides meter level accuracy in real time from hand-held receivers within this zone, simplifying many GPS survey tasks that would otherwise require time consuming collection and post-processing of data.
Future applications on a wider zone can be easely envisionned by installing UHF transcievers in the area. Applications requiring real time centimetric accuracy could also be envisionned, simply using the RTK phase corrections, also computed by the base station.
********************************** SITE INFORMATION FORM ********************************** 0. Form Prepared by (full name): Dr. Christophe Vigny, M.N. Bouin, F. Roubaud, M. Gervaise Date : 02-March-1998 Report type : New (NEW or UPDATE) 1. Site Identification of the GPS monument Site Name : Dumont d'Urville 4 char ID : DUM1 Monument Inscription : - IERS DOMES Number : 91501M001 CDP Number : - Date : 02-March-1998 Additional information : 2. Site Location City : Antarctic base of "Dumont d'Urville" Country : Terre Adélie, France Tectonic Plate : Antarctica Approximate Position X coordinate (m) : -1940883.7791 Y coordinate (m) : 1628483.2535 Z coordinate (m) : -5833718.0282 Latitude (deg) : -66.66508447 Longitude (deg) : 140.00193350 Elevation (m) : -1.3806 3. GPS Receiver Type : ASHTECH CGRS Z-12 Serial Number : 700845-10(F)-LP03030 Firmware Version : 1E95-1D01 Date : 20-December-1997 4. GPS Antenna Type : ASHTECH CHOKE-RING 700936 revolution E Serial Number : CR15276 Date : 20-December-1997 Vertical Antenna Height: 0.035 Antenna Reference Point: ARP 0.00 Date : 20-December-1997 5. Local Site Ties Monument CDP DOMES Components Accuracy Date Name Number Number dX dY dZ mm yy-mm-dd ............ ....... ........ ...... Differential coordinates from the GPS monument to the reference and other monuments. The components are parallel to the XYZ-axes of the global geocentric reference system ITRF (WGS-84). "Accuracy" is estimated accuracy of local survey (millimeters). 6. Frequency standard H-maser / / Cesium / / Quartz / / Internal / X / Other (specify) : Date : (Mark with 'X') 7. Collocation SLR / / VLBI / / DORIS / X / PRARE / / Other GEOPHYSICAL Instrumentation (specify) : Other (specify) : (Mark with 'P' for permanent, 'M' for mobile collocation) 8. On-site, Point of Contact Agency Information Agency : IFRTP Contact : instrumentation team Address : Dumont d'Urville, Terre Adélie Telephone : None E-mail : instrum@ifrtpddu.ifremer.fr Fax : None 9. Responsible Operations Agency 9.1 Agency : IFRTP Contact : D. Fleury Address : IFRTP, Technopole Brest Iroise, BP 75, 29280 Plouzané, France Telephone : + 33 2 98 05 65 00 E-mail : Dominique.Fleury@ifrtp.ifremer.fr E-mail : dfleury@ipev.fr Fax : + 33 2 98 05 65 55 9.2 Agency : IGN Contact : M.N. Bouin Address : ENSG/LAREG - Cite Descartes 6 et 8, Av. Blaise Pascal 77455 Marne-la-Vallee Cedex 2, France Telephone : + 33 1 64 15 32 61 E-mail : bouin@ensg.ign.fr Fax : + 33 1 64 15 32 53 9.3 Agency : CNRS/ENS Contact : C. Vigny Address : Laboratoire de Géologie, ENS 24 rue Lhomond, 75231 Paris cedex 05, France Telephone : + 33 1 44 32 22 14 E-mail : vigny@geologie.ens.fr Fax : + 33 1 44 32 22 00 10. Please insert here the character graphics corresponding to the antenna type. Check, complete or change if necessary the antenna dimensions. -- / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / Ashtech: Dorne Margolin choke-ring \ / \ / ----- \ | | / + \ | <-- 0.128 L2 | | | + | | <-- 0.110 L1 | +--------------------------------------------------+ <-- 0.102 TCR | | | | | | | | | | Antenna | | | +-+--------------------------------------------------+-+ <-- 0.038 | +-------------------+-------------+--------------------+ <-- 0.035 BCR | | | | =| | | ^ -------- +------x------+ <-- 0.000 ARP v AH=3.5cm| | _|______reference pin ^ v ________ | / | <-- -.035 | Adaptor | T | | ----------------------------I---------------------------- <-- -.050 v | I | ^ | I | | | I | | | | | Pillar | | | | | | | | | | | | <-- 0.381 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TGP: Top of Ground Plane BGP: Bottom of Ground Plane TPA: Top of Preamplifier BPA: Bottom of Preamplifier TCR: Top of Chokering BCR: Bottom of Chokering 11. Hard copy information The next items should be compiled and sent to the Central Bureau (see original IGS Station Information Report, or contact the CB for forms). Please mark 'X' if on file or date expected to be available. Site Map : X Site Diagram : Horizon Mask : X Monument description : X Site pictures : X ************************************************************************