KOUROU DORIS site description form 0. Form Prepared by : SIMB (DORIS installation and maintenance department) Date prepared : 14/11/2025 Report type : UPDATE 1. Site location information Site name : KOUROU Site DOMES number : 97301 Host agency : Centre Spatial Guyanais City : Kourou State or province : Guyane Country : FRANCE (French Guiana) Tectonic plate : SOAM Geological information : Geographical coordinates (ITRF) : North Latitude : 5 deg 5' 55'' East Longitude : -52 deg 38' 23'' Ellipsoid height : 109 m Approximate altitude : 143 m 2. DORIS antenna and reference point information 2.1 Four character ID : KRUA Antenna model : Alcatel Antenna serial number : 19 IERS DOMES number : 97301S005 CNES/IGN number : 973012 DORIS SSALTO number : 16 Date installed (dd/mm/yy): 05/12/1986 Date removed (dd/mm/yy) : 24/06/1992 Antenna support type : 0.6 m tubular mast Installed on : Top of the metallic structure of a two storied building Height above ground mark : 2.398 m Ground mark type : Axis of the central tube of the base plate Ground mark DOMES number : 97301M605 Notes : Montagne Leblond 2.2 Four character ID : KRUB Antenna model : Starec 52290 type Antenna serial number : 19 IERS DOMES number : 97301S004 CNES/IGN number : 973012 DORIS SSALTO number : 131 Date installed (dd/mm/yy): 25/06/1992 Date removed (dd/mm/yy) : 05/11/2004 Antenna support type : Guyed 2 metre tower Installed on : Terrace roof of a building (9 meters high) Height above ground mark : 2.420 m Ground mark type : Brass mark 12 mm diameter Ground mark DOMES number : 97301M401 Notes : KRVB & KRUB are the alternate acronyms of the Master Beacon (nominal and redundant). The same DOMES number is assigned because the antenna is the same but two acronyms are used alternately See DORISmail N°0805 2.3 Four character ID : KRUB Antenna model : Starec 52291 type Antenna serial number : 101 IERS DOMES number : 97301S004 CNES/IGN number : 973012 DORIS SSALTO number : 131 Date installed (dd/mm/yy): 05/11/2004 Date removed (dd/mm/yy) : 24/02/2011 Antenna support type : Guyed 2 metre tower Installed on : Terrace roof of a building (9 meters high) Height above ground mark : 2.420 m Ground mark type : Brass mark 12 mm diameter Ground mark DOMES number : 97301M401 Notes : KRVB & KRUB are the alternate acronyms of the Master Beacon (nominal and redundant). The same DOMES number is assigned because the antenna is the same but two acronyms are used alternately See DORISmail N°0805 2.4 Four character ID : KRWB Antenna model : Starec 52291 type Antenna serial number : 138 IERS DOMES number : 97301S006 CNES/IGN number : 973013 DORIS SSALTO number : 1132 Date installed (dd/mm/yy): 24/02/2011 Date removed (dd/mm/yy) : Antenna support type : 2 m high, 30 cm sided very rigid metal tower Installed on : Terrace roof of the building (9m high) Height above ground mark : 2429 m Ground mark type : Hexagonal brass marker Ground mark DOMES number : 97301M403 Notes : 3. DORIS beacons information 3.1 Beacon serial number : 8627016 Beacon model : 1.0 USO serial number : 1.403 4 Char. ID of the REF point : KRUA Date installed (dd/mm/yy) : 06/12/1986 Date removed (dd/mm/yy) : 10/11/1992 3.2 Beacon serial number : 9150062 Beacon model : 1.0 USO serial number : NO USO 4 Char. ID of the REF point : KRUB Date installed (dd/mm/yy) : 11/10/1992 Date removed (dd/mm/yy) : 02/11/2004 3.3 Beacon serial number : 2819008 Beacon model : 3.0 USO serial number : NO USO 4 Char. ID of the REF point : KRUB Date installed (dd/mm/yy) : 05/11/2004 Date removed (dd/mm/yy) : 28/09/2007 3.4 Beacon serial number : 3690067 Beacon model : 3.0 USO serial number : NO USO 4 Char. ID of the REF point : KRVB Date installed (dd/mm/yy) : 28/09/2007 Date removed (dd/mm/yy) : 24/02/2011 3.5 Beacon serial number : 3690067 Beacon model : 3.0 USO serial number : NO USO 4 Char. ID of the REF point : KRWB Date installed (dd/mm/yy) : 24/02/2011 Date removed (dd/mm/yy) : 19/11/2012 3.6 Beacon serial number : 1200085 Beacon model : 3.1 USO serial number : NO USO 4 Char. ID of the REF point : KRWB Date installed (dd/mm/yy) : 19/11/2012 Date removed (dd/mm/yy) : 30/01/2022 3.7 Beacon serial number : 20264038I Beacon model : 4.0 USO serial number : Cesium + TA 4 Char. ID of the REF point : KRWB Date installed (dd/mm/yy) : 30/01/2022 Date removed (dd/mm/yy) : 14/11/2025 3.8 Beacon serial number : 20264038I Beacon model : 4.0 USO serial number : Cesium + TMG 011055-DA 4 Char. ID of the REF point : KRWB Date installed (dd/mm/yy) : 14/11/2025 Date removed (dd/mm/yy) : 4. ITRF coordinates and velocities of the current DORIS ref. point (KRWB) Solution : dpod2020_041 Epoch : 2000.0 X = 3855260.508 m Y = -5049735.521 m Z = 563056.538 m Sig X = 0.0053 m Sig Y = 0.0048 m Sig Z = 0.0029 m VX = -0.00616 m/y VY = -0.00102 m/y VZ = 0.01211 m/y Sig VX = 0.0003 m/y Sig VY = 0.0003 m/y Sig VZ = 0.0002 m/y 5. IERS colocation information 5.1 Instrument type : GNSS Status : Permanent DOMES number of the instrument ref. point : 97301M402 Notes : IGS station (KOUG) 6. Tide Gauge colocation information 7. Local site ties 7.1 Point description : Brass mark under the DORIS antenna (KRUB & KRVB) DOMES number : 97301M401 Differential components from the current DORIS ref. point (KRWB) to the above point (in the ITRS) : dX (m) : -0.697 dY (m) : 2.674 dZ (m) : 1.133 Accuracy (m) : 0.001 Date measured : 25/02/2011 Additional information : Survey by IGN-F 2011 7.2 Point description : Brass mark under the DORIS antenna (KRWB) DOMES number : 97301M403 Differential components from the current DORIS ref. point (KRWB) to the above point (in the ITRS) : dX (m) : -1.468 dY (m) : 1.924 dZ (m) : -0.216 Accuracy (m) : 0.001 Date measured : 25/02/2011 Additional information : Survey by IGN-F 2011 7.3 Point description : Doris Starec antenna reference point (KRUB &KRVB) DOMES number : 97301S004 Differential components from the current DORIS ref. point (KRWB) to the above point (in the ITRS) : dX (m) : 0.761 dY (m) : 0.761 dZ (m) : 1.334 Accuracy (m) : 0.001 Date measured : 25/02/2011 Additional information : Survey by IGN-F 2011 7.4 Point description : IGS station (KOUG) DOMES number : 97301M402 Differential components from the current DORIS ref. point (KRWB) to the above point (in the ITRS) : dX (m) : 2.936 dY (m) : 3.536 dZ (m) : -16.258 Accuracy (m) : 0.001 Date measured : 25/02/2011 Additional information : Survey by IGN-F 2011 8. Meteorological Instrumentation 8.1 Humidity sensor Model : AM2315 Manufacturer : AOSONG Accuracy : +/- 2 percents Notes : 8.2 Pressure sensor Model : BMP280 Manufacturer : Bosch Accuracy : +/- 0.12 hPa, equiv. to +/- 1 m Height : m below the current DORIS ref. point (KRWB) Notes : Long term stability +/- 1 hPa per year 8.3 Temperature sensor Model : AM2315 Manufacturer : AOSONG Accuracy : +/- 0.1 deg C Notes : 9. DORIS network contacts Primary contact: Name : Jerome SAUNIER Agency : IGN Institut Geographique National Mailing address : Service de Geodesie et de Metrologie : 73 avenue de Paris : 94165 SAINT-MANDE Cedex FRANCE Telephone : + 33 1 43 98 83 63 Fax : E-mail : jerome (.) saunier (@) ign.fr Secondary contact: Name : Vincent GARCIA Agency : CNES Centre National d'Etudes Spatiales Mailing address : CNES (DNO/TSA/IS) : 18 Avenue Edouard Belin : 31401 TOULOUSE Cedex FRANCE Telephone : + 33 5 61 27 37 75 Fax : E-mail : vincent (.) garcia (@) cnes.fr