DAKAR DORIS site description form


0. Form

    Prepared by       : SIMB (DORIS installation and maintenance department)
    Date prepared     : 26/07/2001
    Report type       : NEW


1. Site location information

    Site name               : DAKAR
    Site DOMES number       : 34101
    Host agency             : ORSTOM - Geophysique
    City                    : Dakar
    State or province       :
    Country                 : SENEGAL
    Tectonic plate          : AFRC
    Geological information  :

    Geographical coordinates (ITRF) :
           North Latitude   :   14 deg 43' 55''
           East Longitude   :  -17 deg 26'  0''
           Ellipsoid height :   45 m
    Approximate altitude    :   13 m


2. DORIS antenna and reference point information

2.1
    Four character ID        : DAKA
    Antenna model            : Alcatel
    Antenna serial number    : 22
    IERS DOMES number        : 34101S004
    CNES/IGN number          : 341011
    CTDP number              : 18
    Date installed (dd/mm/yy): 28/02/1987
    Date removed (dd/mm/yy)  : 10/01/2001
    Antenna support type     : Guyed 5 metre tubular mast
    Installed on             : The front wall of a two storied building.
    Height above ground mark : 5.32 m
    Ground mark type         : Axis and base of the mast supporting the
                             : antenna
    Ground mark DOMES number : 34101M003
    Notes                    :


3. DORIS beacons information

3.1
    Beacon serial number        : 86 27 018
    Beacon model                : 1.0
    USO serial number           : 1.479
    4 Char. ID of the REF point : DAKA
    Date installed (dd/mm/yy)   : 28/02/1987
    Date removed (dd/mm/yy)     : 01/03/1993

3.2
    Beacon serial number        : 86 33 046
    Beacon model                : 1.0
    USO serial number           : 1.400
    4 Char. ID of the REF point : DAKA
    Date installed (dd/mm/yy)   : 21/04/1993
    Date removed (dd/mm/yy)     : 24/07/1993

3.3
    Beacon serial number        : 86 27 018
    Beacon model                : 1.0
    USO serial number           : 1.479
    4 Char. ID of the REF point : DAKA
    Date installed (dd/mm/yy)   : 01/10/1993
    Date removed (dd/mm/yy)     : 10/01/2001



4. ITRF coordinates and velocities of the current DORIS ref. point (DAKA)

    Solution : ITRF 97
    Epoch    : 1997.0

    X =  5886437.428 m     Y = -1848461.534 m     Z =  1611441.776 m
    Sig X = .018 m         Sig Y = .023 m         Sig Z = .013 m

    VX =  .0083 m/y        VY =  .0143 m/y        VZ =  .0276 m/y
    Sig VX = .0069 m/y     Sig VY = .0080 m/y     Sig VZ = .0056 m/y


5. IERS collocation information


6. Tide Gauge collocation information

6.1
    Name         : Dakar
    Location     : Dakar
    GLOSS number : 253
    Distance     : 11 km
    Notes        :


7. Local site ties

7.1
    Point description      : Mark under the DORIS antenna
    DOMES number           : 34101M003

    Differential components from the current DORIS ref. point (DAKA)
    to the above point (in the ITRS) :
                    dX (m) : 4.8995
                    dY (m) : -1.5385
                    dZ (m) : 1.3504
    Accuracy (m)           : 0.01
    Date measured          :
    Additional information :

7.2
    Point description      : GIG91 GPS Mark
    DOMES number           : 34101M004

    Differential components from the current DORIS ref. point (DAKA)
    to the above point (in the ITRS) :
                    dX (m) : -93.234
                    dY (m) : -287.600
                    dZ (m) : 35.107
    Accuracy (m)           : 0.02
    Date measured          :
    Additional information :


8. Meteorological Instrumentation

8.1 Humidity sensor
    Model           : MUC.1 + transmitter M-UTN3
    Manufacturer    : SPSI
    Accuracy        :
    Notes           :

8.2 Pressure sensor
    Model           : M-PaTN.8
    Manufacturer    : SPSI
    Accuracy        :
    Height          : -6.30 m above the current DORIS ref. point (DAKA)
    Notes           :

8.3 Temperature sensor
    Model           : Constructed for DORIS beacons
    Manufacturer    : CEIS-TM
    Accuracy        :
    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                : Alain ORSONI
    Agency              : Institut Geographique National
    Mailing address     : CNES (ED/AL/MA)
                        : 18 Avenue Edouard BELIN
                        : 31401 TOULOUSE Cedex    FRANCE
    Telephone           : + 33 5 61 27 40 72
    Fax                 : + 33 5 61 28 25 95
    E-mail              : Alain.Orsoni@cnes.fr