ASCENSION DORIS site description form
0. Form
Prepared by : SIMB (DORIS installation and maintenance department)
Date prepared : 9/12/2008
Report type : UPDATE
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 (PB2002) : South America
Geological information :
Geographical coordinates (ITRF) :
North Latitude : -7 deg 54' 59''
East Longitude : -14 deg 19' 56''
Ellipsoid height : 39 m
Approximate altitude :
2. DORIS antenna and reference point information
2.1
Four character ID : ASDB
Antenna model : Starec 52291 type
Antenna serial number : 89
IERS DOMES number : 30602S004
CNES/IGN number : 306022
CTDP number : 74
Date installed (dd/mm/yy): 28/02/1997
Date removed (dd/mm/yy) :
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 : Starec 52291 type antenna number 58 removed on
: 16/03/2003.
3. DORIS beacons information
3.1
Beacon serial number : 98 45 107
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 : 99 04 130
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 : 99 04 121
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 : 28 19 052
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) :
4. ITRF coordinates and velocities of the current DORIS ref. point (ASDB)
Solution : ITRF2005
Epoch : 2000.0
X = 6121161.560 m Y = -1563943.189 m Z = -872613.055 m
Sig X = 0.004 m Sig Y = 0.005 m Sig Z = 0.003 m
VX = -0.0044 m/y VY = -0.0132 m/y VZ = 0.0109 m/y
Sig VX = .0011 m/y Sig VY = .0014 m/y Sig VZ = .0008 m/y
5. IERS co-location information
5.1
Instrument type : GPS
Status : Permanent
DOMES number of the
instrument ref. point : 30602M001
Notes : Tie measured 03/1997
6. Tide gauge co-location information
6.1
Name : Ascension Is.
Location : English Cove
GLOSS number : 263
Distance : 6.5 km
Notes : Tie measured 03/1997
7. Local site ties
7.1
Point description : Mark under the DORIS antenna
DOMES number : 30602M002
Differential components from the current DORIS ref. point (ASDB)
to the above point (in the ITRS) :
dX (m) : -0.526
dY (m) : 0.134
dZ (m) : 0.076
Accuracy (m) : 0.001
Date measured : March 1997 & 2003
Additional information : Survey by IGN-F
7.2
Point description : IGS station ASC1 (plate on I-beam)
DOMES number : 30602M001
Differential components from the current DORIS ref. point (ASDB)
to the above point (in the ITRS) :
dX (m) : -2635.486
dY (m) : -8401.480
dZ (m) : -3838.070
Accuracy (m) : 0.002
Date measured : March 1997 & 2003
Additional information : Survey by IGN-F
7.3
Point description : English Bay / tide gauge/POL18 mark (2003 position)
DOMES number :
Differential components from the current DORIS ref. point (ASDB)
to the above point (in the ITRS) :
dX (m) : -1132.194
dY (m) : -5793.768
dZ (m) : 2562.524
Accuracy (m) : 0.005
Date measured : March 1997
Additional information : Survey by IGN-F
7.4
Point description : English Bay / tide gauge/POL18 mark (1997 position)
DOMES number :
Differential components from the current DORIS ref. point (ASDB)
to the above point (in the ITRS) :
dX (m) : -1132.240
dY (m) : -5793.883
dZ (m) : 2562.596
Accuracy (m) : 0.003
Date measured : March 2003
Additional information : Survey by IGN-F
7.5
Point description : Comfortless Cove : USGS mark "Pyramid point"
DOMES number :
Differential components from the current DORIS ref. point (ASDB)
to the above point (in the ITRS) :
dX (m) : -1783.140
dY (m) : -7483.406
dZ (m) : 920.985
Accuracy (m) : 0.005
Date measured : March 1997
Additional information : Survey by IGN-F. Point description error in the former version of the sitelog.
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 mb
Height : 1.9 m above the current DORIS ref. point (ASDB)
Notes : long term stability = +/- 0.1 mb/year
8.3 Temperature sensor
Model : HMP45D
Manufacturer : VAISALA
Accuracy : +/- 0.5 deg C
Notes :
9. DORIS network contacts
Primary contact:
Name : Herve FAGARD
Agency : Institut Geographique National
Mailing address : Service de Geodesie et de Nivellement
: 2 Avenue PASTEUR
: 94165 SAINT-MANDE CEDEX FRANCE
Telephone : + 33 1 43 98 81 48
Fax : + 33 1 43 98 84 50
E-mail : herve (.) fagard (@) ign.fr
Secondary contact:
Name : Francois BOLDO
Agency : Institut Geographique National
Mailing address : CNES (DCT/ME/OT)
: 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
| 
| Site map
| FAQ
| Mails
| Bibliography
|
