GREENBELT DORIS site description form 0. Form Prepared by : SIMB (DORIS installation and maintenance department) Date prepared : 12/04/2013 Report type : UPDATE 1. Site location information Site name : GREENBELT Site DOMES number : 40451 Host agency : NASA/GSFC City : Greenbelt State or province : Maryland Country : U.S.A. Tectonic plate : NOAM Geological information : thick section of cretaceous sands and gravels Geographical coordinates (ITRF) : North Latitude : 39 deg 1' 12'' East Longitude : -76 deg 49' 40'' Ellipsoid height : 20 m Approximate altitude : 53 m 2. DORIS antenna and reference point information 2.1 Four character ID : GREB Antenna model : Starec 52291 type Antenna serial number : 71 IERS DOMES number : 40451S176 CNES/IGN number : 404511 DORIS SSALTO number : 93 Date installed (dd/mm/yy): 29/06/2000 Date removed (dd/mm/yy) : 17/05/2012 Antenna support type : Concrete pillar Installed on : Height above ground mark : 0.498 m Ground mark type : DORIS mark on top of DORIS concrete pillar Ground mark DOMES number : 40451M130 Notes : 2.2 Four character ID : GRFB Antenna model : Starec 52291 type Antenna serial number : 85 IERS DOMES number : 40451S178 CNES/IGN number : 404512 DORIS SSALTO number : 299 Date installed (dd/mm/yy): 17/05/2012 Date removed (dd/mm/yy) : Antenna support type : Stainless steel structure 40cm high Installed on : concrete pillar 1.8m high Height above ground mark : 0.824 m Ground mark type : DORIS mark on top of DORIS concrete pillar Ground mark DOMES number : 40451M130 Notes : 3. DORIS beacons information 3.1 Beacon serial number : 9904123 Beacon model : 2.0 USO serial number : 3.182 4 Char. ID of the REF point : GREB Date installed (dd/mm/yy) : 29/06/2000 Date removed (dd/mm/yy) : 11/09/2005 3.2 Beacon serial number : 2819025 Beacon model : 3.0 USO serial number : 3.340 4 Char. ID of the REF point : GREB Date installed (dd/mm/yy) : 17/01/2006 Date removed (dd/mm/yy) : 26/05/2009 3.3 Beacon serial number : 3690082 Beacon model : 3.0 USO serial number : 3.544 4 Char. ID of the REF point : GREB Date installed (dd/mm/yy) : 26/05/2009 Date removed (dd/mm/yy) : 17/05/2012 3.4 Beacon serial number : 3690082 Beacon model : 3.0 USO serial number : 3.544 4 Char. ID of the REF point : GRFB Date installed (dd/mm/yy) : 17/05/2012 Date removed (dd/mm/yy) : 4. ITRF coordinates and velocities of the current DORIS ref. point (GRFB) Solution : ITRF2008 (tie to GREB) Epoch : 2005.0 X = 1130711.237 m Y = -4831392.162 m Z = 3994061.386 m Sig X = 0.002 m Sig Y = 0.001 m Sig Z = 0.001 m VX = -0.0146 m/y VY = -0.0027 m/y VZ = 0.0021 m/y Sig VX = 0.0005 m/y Sig VY = 0.0004 m/y Sig VZ = 0.0003 m/y 5. IERS colocation information 5.1 Instrument type : VLBI Status : Mobile DOMES number of the instrument ref. point : 40451M125 Notes : MV-3 5.2 Instrument type : VLBI Status : Permanent DOMES number of the instrument ref. point : 40451S160 Notes : VLBI2010 5.3 Instrument type : GNSS Status : Permanent DOMES number of the instrument ref. point : 40451M123 Notes : IGS "GODE" 5.4 Instrument type : SLR Status : Permanent DOMES number of the instrument ref. point : 40451M105 Notes : Moblas-7 6. Tide Gauge colocation information 7. Local site ties 7.1 Point description : DORIS mark on top of DORIS concrete pillar DOMES number : 40451M130 Differential components from the current DORIS ref. point (GRFB) to the above point (in the ITRS) : dX (m) : -0.144 dY (m) : 0.623 dZ (m) : -0.520 Accuracy (m) : 0.001 Date measured : 14/05/2012 Additional information : Survey by IGN-F 2012 7.2 Point description : DORIS starec antenna reference point (GREB) DOMES number : 40451S176 Differential components from the current DORIS ref. point (GRFB) to the above point (in the ITRS) : dX (m) : -0.056 dY (m) : 0.246 dZ (m) : -0.207 Accuracy (m) : 0.001 Date measured : 14/05/2012 Additional information : Survey by IGN-F 2012 7.3 Point description : IGS station (GODE) DOMES number : 40451M123 Differential components from the current DORIS ref. point (GRFB) to the above point (in the ITRS) : dX (m) : 62.519 dY (m) : 138.602 dZ (m) : 139.019 Accuracy (m) : 0.001 Date measured : 14/07/2012 Additional information : Survey by NGS 2012 7.4 Point description : MV-3 mark DOMES number : 40451M125 Differential components from the current DORIS ref. point (GRFB) to the above point (in the ITRS) : dX (m) : 83.415 dY (m) : 158.356 dZ (m) : 155.664 Accuracy (m) : 0.001 Date measured : 14/07/2012 Additional information : Survey by NGS 2012 7.5 Point description : SLR mark DOMES number : 40451M105 Differential components from the current DORIS ref. point (GRFB) to the above point (in the ITRS) : dX (m) : 8.288 dY (m) : 41.594 dZ (m) : 45.159 Accuracy (m) : 0.001 Date measured : 14/07/2012 Additional information : Survey by NGS 2012 7.6 Point description : VLBI2010 (7622) DOMES number : 40451S160 Differential components from the current DORIS ref. point (GRFB) to the above point (in the ITRS) : dX (m) : 18.876 dY (m) : 146.212 dZ (m) : 166.858 Accuracy (m) : 0.001 Date measured : 14/07/2012 Additional information : Survey by NGS 2012 8. Meteorological Instrumentation 8.1 Humidity sensor Model : Manufacturer : Accuracy : Notes : No humidity sensor 8.2 Pressure sensor Model : Manufacturer : Accuracy : Height : m above the current DORIS ref. point (GRFB) Notes : No pressure sensor 8.3 Temperature sensor Model : Manufacturer : Accuracy : Notes : No temperature sensor 9. DORIS network contacts Primary contact: Name : Jerome SAUNIER Agency : Institut Geographique National Mailing address : Service de Geodesie et Nivellement : 73 avenue de Paris : 94165 SAINT-MANDE Cedex FRANCE Telephone : + 33 1 43 98 83 63 Fax : + 33 1 43 98 84 50 E-mail : jerome (.) saunier (@) ign.fr Secondary contact: Name : Francois BOLDO Agency : Institut Geographique National Mailing address : CNES (DCT/ME/OC) : 18 Avenue Edouard Belin : 31401 TOULOUSE Cedex FRANCE Telephone : + 33 5 61 27 40 72 Fax : + 33 5 61 28 25 95 E-mail : simb (.) doris (@) cnes.fr