HARTEBEESTHOEK DORIS site description form 0. Form Prepared by : SIMB (DORIS installation and maintenance department) Date prepared : 15/01/2025 Report type : UPDATE 1. Site location information Site name : HARTEBEESTHOEK Site DOMES number : 30302 Host agency : SANSA Space Operations City : Hartebeesthoek State or province : Pretoria Country : SOUTH AFRICA Tectonic plate : AFRC Geological information : Geographical coordinates (ITRF) : North Latitude : -25 deg 53' 13'' East Longitude : 27 deg 42' 27'' Ellipsoid height : 1559 m Approximate altitude : 1533 m 2. DORIS antenna and reference point information 2.1 Four character ID : HBKA Antenna model : Alcatel Antenna serial number : 24 IERS DOMES number : 30302S202 CNES/IGN number : 303021 DORIS SSALTO number : 19 Date installed (dd/mm/yy): 10/03/1988 Date removed (dd/mm/yy) : 26/05/1997 Antenna support type : 3 meters pylon not guyed Installed on : Embeded on the side face of a pillar support of a one storied building. Height above ground mark : 6.970 m Ground mark type : Target glued on concrete floor. Ground mark DOMES number : 30302M005 Notes : 2.2 Four character ID : HBLA Antenna model : Alcatel Antenna serial number : 24 IERS DOMES number : 30302S005 CNES/IGN number : 303022 DORIS SSALTO number : 76 Date installed (dd/mm/yy): 30/05/1997 Date removed (dd/mm/yy) : 07/08/2000 Antenna support type : 3.5 m tower not guyed Installed on : Embeded on the side face of a pillar support of a one storied building. Height above ground mark : m Ground mark type : Domed brass mark Ground mark DOMES number : 30302M006 Notes : 2.3 Four character ID : HBKB Antenna model : Starec 52291 type Antenna serial number : 60 IERS DOMES number : 30302S006 CNES/IGN number : 303023 DORIS SSALTO number : 95 Date installed (dd/mm/yy): 10/08/2000 Date removed (dd/mm/yy) : 11/09/2005 Antenna support type : 2 meter tubular mast 0.15 m diameter Installed on : Mast extends 4 meters deep (3 m in soil + 1 m in rock). Mast filled with concrete. Height above ground mark : 0.504 m Ground mark type : Mark on top of the mast. Ground mark DOMES number : 30302M008 Notes : 2.4 Four character ID : HBKB Antenna model : Starec 52291 type Antenna serial number : 60 IERS DOMES number : 30302S006 CNES/IGN number : 303023 DORIS SSALTO number : 95 Date installed (dd/mm/yy): 11/09/2005 Date removed (dd/mm/yy) : 21/11/2006 Antenna support type : 2 meter tubular mast 0.15 m diameter Installed on : Mast extends 4 meters deep (3 m in soil + 1 m in rock). Mast filled with concrete. Height above ground mark : 0.504 m Ground mark type : Mark on top of the mast. Ground mark DOMES number : 30302M008 Notes : Station upgrade, becomming the third Master beacon & antenna was not changed nor moved, SSALTO number changed, the ID changed from HBKB to HBLB DOMES number remains unchanged 2.5 Four character ID : HBMB Antenna model : Starec 52291 type Antenna serial number : 134 IERS DOMES number : 30302S008 CNES/IGN number : 303024 DORIS SSALTO number : 1387 Date installed (dd/mm/yy): 22/11/2006 Date removed (dd/mm/yy) : Antenna support type : 2 meter tubular mast 0.15 m diameter Installed on : Mast extends 4 meters deep (3 m in soil + 1 m in rock). Mast filled with concrete Height above ground mark : 0.679 m Ground mark type : Mark on top of the mast. Ground mark DOMES number : 30302M008 Notes : Antenna raised by 174 mm in order to remove the N-type bent cable connectors 3. DORIS beacons information 3.1 Beacon serial number : 8627019 Beacon model : 1.0 USO serial number : 1.539 4 Char. ID of the REF point : HBKA Date installed (dd/mm/yy) : 01/04/1988 Date removed (dd/mm/yy) : 04/09/1996 3.2 Beacon serial number : 8627005 Beacon model : 1.0 USO serial number : 3.116 4 Char. ID of the REF point : HBKA Date installed (dd/mm/yy) : 04/09/1996 Date removed (dd/mm/yy) : 26/05/1997 3.3 Beacon serial number : 8627005 Beacon model : 1.0 USO serial number : 3.116 4 Char. ID of the REF point : HBLA Date installed (dd/mm/yy) : 30/05/1997 Date removed (dd/mm/yy) : 09/08/2000 3.4 Beacon serial number : 8627005 Beacon model : 1.0 USO serial number : 3.116 4 Char. ID of the REF point : HBKB Date installed (dd/mm/yy) : 11/08/2000 Date removed (dd/mm/yy) : 29/10/2004 3.5 Beacon serial number : 8633034 Beacon model : 1.0 USO serial number : 1.540 4 Char. ID of the REF point : HBKB Date installed (dd/mm/yy) : 27/01/2005 Date removed (dd/mm/yy) : 11/09/2005 3.6 Beacon serial number : 2819058 Beacon model : 3.0 USO serial number : NO USO 4 Char. ID of the REF point : HBKB Date installed (dd/mm/yy) : 12/09/2005 Date removed (dd/mm/yy) : 20/11/2006 3.7 Beacon serial number : 2819058 Beacon model : 3.0 USO serial number : NO USO 4 Char. ID of the REF point : HBMB Date installed (dd/mm/yy) : 21/11/2006 Date removed (dd/mm/yy) : 05/03/2007 3.8 Beacon serial number : 2819007 Beacon model : 3.0 USO serial number : NO USO 4 Char. ID of the REF point : HBMB Date installed (dd/mm/yy) : 06/03/2007 Date removed (dd/mm/yy) : 23/10/2013 3.9 Beacon serial number : 2819019 Beacon model : 3.1 USO serial number : NO USO 4 Char. ID of the REF point : HBMB Date installed (dd/mm/yy) : 23/10/2013 Date removed (dd/mm/yy) : 17/07/2015 3.10 Beacon serial number : 2819058 Beacon model : 3.1 USO serial number : NO USO 4 Char. ID of the REF point : HBMB Date installed (dd/mm/yy) : 17/07/2015 Date removed (dd/mm/yy) : 14/04/2022 3.11 Beacon serial number : 20264039I Beacon model : 4.0 USO serial number : Cesium + TA OSA 4 Char. ID of the REF point : HBMB Date installed (dd/mm/yy) : 14/04/2022 Date removed (dd/mm/yy) : 10/12/2024 3.12 Beacon serial number : 21154062I Beacon model : 4.0 USO serial number : Maser actif station 4 Char. ID of the REF point : HBMB Date installed (dd/mm/yy) : 10/12/2024 Date removed (dd/mm/yy) : 4. ITRF coordinates and velocities of the current DORIS ref. point (HBMB) Solution : dpod2020_030 Epoch : 2000.0 X = 5084653.475 m Y = 2670347.313 m Z = -2768470.976 m Sig X = 0.005 m Sig Y = 0.007 m Sig Z = 0.004 m VX = -0.00219 m/y VY = 0.01859 m/y VZ = 0.01630 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 : 30302M009 Notes : IGS station "HARB" 5.2 Instrument type : VLBI Status : Permanent DOMES number of the instrument ref. point : 30302S001 Notes : CDP 7232 5.3 Instrument type : SLR Status : Permanent DOMES number of the instrument ref. point : 30302M003 Notes : CDP 7501 5.4 Instrument type : GNSS Status : Permanent DOMES number of the instrument ref. point : 30302M004 Notes : IGS station "HRAO" 5.5 Instrument type : VLBI Status : Permanent DOMES number of the instrument ref. point : 30302S009 Notes : CDP 7378 6. Tide Gauge colocation information 7. Local site ties 7.1 Point description : DORIS Alcatel antenna reference point (HBKA) DOMES number : 30302S202 Differential components from the current DORIS ref. point (HBMB) to the above point (in the ITRS) : dX (m) : -11.928 dY (m) : 2.468 dZ (m) : -26.120 Accuracy (m) : 0.02 Date measured : 01/08/2000 Additional information : Survey by IGN-F 7.2 Point description : DORIS Alcatel antenna reference point (HBLA) DOMES number : 30302S005 Differential components from the current DORIS ref. point (HBMB) to the above point (in the ITRS) : dX (m) : -11.971 dY (m) : 2.687 dZ (m) : -26.814 Accuracy (m) : 0.002 Date measured : 01/08/2000 Additional information : Survey by IGN-F 7.3 Point description : DORIS Starec antenna reference point (HBKB & HBLB) DOMES number : 30302S006 Differential components from the current DORIS ref. point (HBMB) to the above point (in the ITRS) : dX (m) : -0.138 dY (m) : -0.075 dZ (m) : 0.075 Accuracy (m) : 0.001 Date measured : 01/11/2006 Additional information : Survey by IGN-F HBKB & HBLB are the same point (upgrade to Master Beacon of the station) 7.4 Point description : Mark under the DORIS antenna DOMES number : 30302M008 Differential components from the current DORIS ref. point (HBMB) to the above point (in the ITRS) : dX (m) : -0.540 dY (m) : -0.286 dZ (m) : 0.299 Accuracy (m) : 0.001 Date measured : 04/03/2014 Additional information : Survey by IGN-F 7.5 Point description : Permanent GNSS station IGS (HARB) DOMES number : 30302M009 Differential components from the current DORIS ref. point (HBMB) to the above point (in the ITRS) : dX (m) : 4.188 dY (m) : -22.291 dZ (m) : -10.252 Accuracy (m) : 0.001 Date measured : 04/03/2014 Additional information : Survey by IGN-F 7.6 Point description : Permanent GNSS station IGS (HRAO) DOMES number : 30302M004 Differential components from the current DORIS ref. point (HBMB) to the above point (in the ITRS) : dX (m) : 699.017 dY (m) : -1951.569 dZ (m) : -260.641 Accuracy (m) : 0.003 Date measured : 04/03/2014 Additional information : Survey by IGN-F 7.7 Point description : SLR mark (CDP 7501) DOMES number : 30302M003 Differential components from the current DORIS ref. point (HBMB) to the above point (in the ITRS) : dX (m) : 747.646 dY (m) : -2017.160 dZ (m) : -217.841 Accuracy (m) : 0.003 Date measured : 04/03/2014 Additional information : Survey by IGN-F 7.8 Point description : VLBI (CDP 7232) DOMES number : 30302S001 Differential components from the current DORIS ref. point (HBMB) to the above point (in the ITRS) : dX (m) : 789.313 dY (m) : -2083.762 dZ (m) : -225.975 Accuracy (m) : 0.004 Date measured : 04/03/2014 Additional information : Survey by IGN-F 7.9 Point description : VLBI (CDP 7378) DOMES number : 30302S009 Differential components from the current DORIS ref. point (HBMB) to the above point (in the ITRS) : dX (m) : 837.345 dY (m) : -2186.061 dZ (m) : -221.852 Accuracy (m) : 0.005 Date measured : 04/03/2014 Additional information : Survey by IGN-F 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 (HBMB) 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