Network

   GREENBELT 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               : GREENBELT
   Site DOMES number       : 40451
   Host agency             : NASA/GSFC
   City                    : Greenbelt
   State or province       : Maryland
   Country                 : U.S.A.
   Tectonic plate (PB2002) : North America
   Geological information  : 
                             
   Geographical coordinates (ITRF) : 
          North Latitude   :   39 deg  1' 12''
          East Longitude   :  -76 deg 49' 41''
          Ellipsoid height :   20 m
   Approximate altitude    :   52 m

2. DORIS antenna and reference point information

2.1
   Four character ID        : GREB
   Antenna model            : Starec 52291 type
   Antenna serial number    : 71
   IERS DOMES number        : 40451S176
   CNES/IGN number          : 404511
   CTDP number              : 93
   Date installed (dd/mm/yy): 29/06/2000
   Date removed (dd/mm/yy)  : 
   Antenna support type     : Concrete pillar
   Installed on             : 
   Height above ground mark : 0.518 m
   Ground mark type         : 
   Ground mark DOMES number : 40451
   Notes                    : 


3. DORIS beacons information

3.1
   Beacon serial number        : 99 04 123
   Beacon model                : 2.0
   USO serial number           : 3.182
   4 Char. ID of the REF point : GREB
   Date installed (dd/mm/yy)   : 29/06/2000
   Date removed (dd/mm/yy)     : 11/09/2005

3.2
   Beacon serial number        : 28 19 025
   Beacon model                : 3.0
   USO serial number           : 3.340
   4 Char. ID of the REF point : GREB
   Date installed (dd/mm/yy)   : 17/01/2006
   Date removed (dd/mm/yy)     : 


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

   Solution : ITRF2005
   Epoch    : 2000.0

   X = 1130711.254 m     Y = -4831391.930 m     Z = 3994061.187 m
   Sig X = 0.002 m        Sig Y = 0.002 m       Sig Z = 0.002 m

   VX = -0.0137 m/y        VY = -0.0001 m/y       VZ = 0.0005 m/y
   Sig VX = .0005 m/y    Sig VY = .0004 m/y   Sig VZ = .0004 m/y

5. IERS co-location information

5.1
   Instrument type       : SLR
   Status                : Permanent
   DOMES number of the
   instrument ref. point : 40451M105
   Notes                 : 

5.2
   Instrument type       : GPS
   Status                : Permanent
   DOMES number of the
   instrument ref. point : 40451M123
   Notes                 : 

5.3
   Instrument type       : VLBI
   Status                : Mobile
   DOMES number of the
   instrument ref. point : 40451M125
   Notes                 : 

6. Tide gauge co-location information

7. Local site ties

7.1
   Point description      : DORIS mark (concrete pillar: top of plate)
   DOMES number           : 

   Differential components from the current DORIS ref. point (GREB)
   to the above point (in the ITRS) :
                   dX (m) : -0.092
                   dY (m) : 0.392
                   dZ (m) : -0.326
   Accuracy (m)           : 0.001
   Date measured          : June 2000
   Additional information : Antenna height measurement by IGN-F

7.2
   Point description      : SLR mark (CDP 7105)
   DOMES number           : 40451M105

   Differential components from the current DORIS ref. point (GREB)
   to the above point (in the ITRS) :
                   dX (m) : 8.343
                   dY (m) : 41.346
                   dZ (m) : 45.362
   Accuracy (m)           : 0.001
   Date measured          : January 2000
   Additional information : Survey by Honeywell TSI

7.3
   Point description      : Mark JPL 4006 (IGS station GODE)
   DOMES number           : 40451M123

   Differential components from the current DORIS ref. point (GREB)
   to the above point (in the ITRS) :
                   dX (m) : 62.573
                   dY (m) : 138.355
                   dZ (m) : 139.226
   Accuracy (m)           : 0.002
   Date measured          : January 2000
   Additional information : Survey by Honeywell TSI

7.4
   Point description      : MV-3 mark (CDP 7108)
   DOMES number           : 40451M125

   Differential components from the current DORIS ref. point (GREB)
   to the above point (in the ITRS) :
                   dX (m) : 83.468
                   dY (m) : 158.108
                   dZ (m) : 155.871
   Accuracy (m)           : 0.003
   Date measured          : January 2000
   Additional information : Survey by Honeywell TSI

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          : 1.65 m above the current DORIS ref. point (GREB)
   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