ASCENSION DORIS site description form 0. Form Prepared by : SIMB (DORIS installation and maintenance department) Date prepared : 29/01/2013 Report type : NEW 1. Site location information Site name : ASCENSION Site DOMES number : 30602 Host agency : ARIANE Tracking Station City : Ascension Island State or province : South Atlantic Ocean Country : UNITED KINGDOM (South Atlantic Ocean) Tectonic plate : SOAM Geological information : Geographical coordinates (ITRF) : North Latitude : -7 deg 54' 58'' East Longitude : -14 deg 19' 58'' Ellipsoid height : 38 m Approximate altitude : 24 m 2. DORIS antenna and reference point information 2.1 Four character ID : ASDB Antenna model : Starec 52291 type Antenna serial number : 58 IERS DOMES number : 30602S004 CNES/IGN number : 306022 DORIS SSALTO number : 74 Date installed (dd/mm/yy): 28/02/1997 Date removed (dd/mm/yy) : 16/03/2003 Antenna support type : Concrete pillar (old STELLA antenna support) Installed on : Concrete pad Height above ground mark : 0.548 m Ground mark type : Domed brass mark 12 mm diameter Ground mark DOMES number : 30602M002 Notes : 2.2 Four character ID : ASDB Antenna model : Starec 52291 type Antenna serial number : 89 IERS DOMES number : 30602S004 CNES/IGN number : 306022 DORIS SSALTO number : 74 Date installed (dd/mm/yy): 16/03/2003 Date removed (dd/mm/yy) : 25/06/2009 Antenna support type : Concrete pillar (old STELLA antenna support) Installed on : Concrete pad Height above ground mark : 0.548 m Ground mark type : Domed brass mark 12 mm diameter Ground mark DOMES number : 30602M002 Notes : 2.3 Four character ID : ASEB Antenna model : Starec 52291 type Antenna serial number : 135 IERS DOMES number : 30602S005 CNES/IGN number : 306023 DORIS SSALTO number : 290 Date installed (dd/mm/yy): 14/06/2010 Date removed (dd/mm/yy) : Antenna support type : Stainless steel interface Installed on : 1.5m high concrete reinforced pillar Height above ground mark : 1.090 m Ground mark type : Domed brass mark Ground mark DOMES number : 30602M003 Notes : 3. DORIS beacons information 3.1 Beacon serial number : 9845107 Beacon model : 2.0 USO serial number : 2.866 4 Char. ID of the REF point : ASDB Date installed (dd/mm/yy) : 09/04/1999 Date removed (dd/mm/yy) : 12/02/2002 3.2 Beacon serial number : 9904130 Beacon model : 2.0 USO serial number : 3.152 4 Char. ID of the REF point : ASDB Date installed (dd/mm/yy) : 09/04/2002 Date removed (dd/mm/yy) : 18/05/2004 3.3 Beacon serial number : 9904121 Beacon model : 2.0 USO serial number : 3.130 4 Char. ID of the REF point : ASDB Date installed (dd/mm/yy) : 19/05/2004 Date removed (dd/mm/yy) : 30/03/2005 3.4 Beacon serial number : 2819052 Beacon model : 3.0 USO serial number : 3.405 4 Char. ID of the REF point : ASDB Date installed (dd/mm/yy) : 01/04/2005 Date removed (dd/mm/yy) : 07/04/2010 3.5 Beacon serial number : 2819017 Beacon model : 3.0 USO serial number : 3.280 4 Char. ID of the REF point : ASEB Date installed (dd/mm/yy) : 14/06/2010 Date removed (dd/mm/yy) : 4. ITRF coordinates and velocities of the current DORIS ref. point (ASEB) Solution : DPOD2008 Epoch : 2005.0 X = 6121154.081 m Y = -1563976.723 m Z = -872606.019 m Sig X = 0.002 m Sig Y = 0.003 m Sig Z = 0.002 m VX = -0.0032 m/y VY = -0.0090 m/y VZ = 0.0111 m/y Sig VX = 0.0006 m/y Sig VY = 0.0007 m/y Sig VZ = 0.0004 m/y 5. IERS colocation information 6. Tide Gauge colocation information 6.1 Name : Ascension Is. Location : Hook Jetty, English Bay GLOSS number : 263 Distance : 6.4 km Notes : 7. Local site ties 7.1 Point description : DORIS Starec antenna reference point ((ASDB) DOMES number : 30602S004 Differential components from the current DORIS ref. point (ASEB) to the above point (in the ITRS) : dX (m) : 7.470 dY (m) : 33.499 dZ (m) : -6.973 Accuracy (m) : 0.001 Date measured : 14/06/2010 Additional information : Survey by IGN-F 2010 7.2 Point description : Mark under Doris antenna (ASDB) DOMES number : 30602M002 Differential components from the current DORIS ref. point (ASEB) to the above point (in the ITRS) : dX (m) : 6.944 dY (m) : 33.633 dZ (m) : -6.870 Accuracy (m) : 0.001 Date measured : 14/06/2010 Additional information : Survey by IGN-F 2010 7.3 Point description : Mark under Doris antenna (ASEB) DOMES number : 30602M003 Differential components from the current DORIS ref. point (ASEB) to the above point (in the ITRS) : dX (m) : -1.046 dY (m) : 0.267 dZ (m) : 0.150 Accuracy (m) : 0.001 Date measured : 14/06/2010 Additional information : Survey by IGN-F 2010 7.4 Point description : Tide gauge English Bay: POL18 mark DOMES number : Differential components from the current DORIS ref. point (ASEB) to the above point (in the ITRS) : dX (m) : -1124.734 dY (m) : -5760.272 dZ (m) : 2555.544 Accuracy (m) : 0.002 Date measured : 15/06/2010 Additional information : Survey by IGN-F 2003 & 2010 8. Meteorological Instrumentation 8.1 Humidity sensor Model : HMP45D Manufacturer : VAISALA Accuracy : +/- 3 percents Notes : 8.2 Pressure sensor Model : PTU200 class B Manufacturer : VAISALA Accuracy : +/- 0.25 hPa Height : 1.9 m above the current DORIS ref. point (ASEB) Notes : long term stability = +/- 0.1 hPa/year 8.3 Temperature sensor Model : HMP45D Manufacturer : VAISALA Accuracy : +/- 0.5 deg C Notes : 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