MALE DORIS site description form


0. Form

    Prepared by   : SIMB (DORIS installation and maintenance department)
    Date prepared : 13/02/2023
    Report type   : UPDATE


1. Site location information

    Site name              : MALE
    Site DOMES number      : 22901
    Host agency            : Maldives Meteorological Service
    City                   : Male Airport
    State or province      : Hulhule island
    Country                : Maldives
    Tectonic plate         : INDI
    Geological information : 

    Geographical coordinates (ITRF) : 
        North Latitude       :     4 deg 11' 34''
        East Longitude       :    73 deg 31' 41''
        Ellipsoid height     :   -92 m
        Approximate altitude :     4 m


2. DORIS antenna and reference point information

2.1
    Four character ID        : MALB
    Antenna model            : Starec 52291 type 
    Antenna serial number    : 113
    IERS DOMES number        : 22901S002
    CNES/IGN number          : 229011
    DORIS SSALTO number      : 248
    Date installed (dd/mm/yy): 15/01/2005
    Date removed (dd/mm/yy)  : 22/09/2021
    Antenna support type     : 30 cm sided very rigid metal tower, 2 m high
    Installed on             : Reinforced concrete block, 0.9 m sided,1 m deep
    Height above ground mark : 2.371 m
    Ground mark type         : Steel bolt, 23 mm diameter
    Ground mark DOMES number : 22901M002
    Notes                    : 

2.2
    Four character ID        : MALC
    Antenna model            : Starec C type
    Antenna serial number    : 191
    IERS DOMES number        : 22901S003
    CNES/IGN number          : 229011
    DORIS SSALTO number      : 1248
    Date installed (dd/mm/yy): 24/09/2021
    Date removed (dd/mm/yy)  : 
    Antenna support type     : 2 m high Leclerc tower
    Installed on             : concrete pad
    Height above ground mark : 2.371 m
    Ground mark type         : Hexagonal domed brass mark
    Ground mark DOMES number : 22901M004
    Notes                    : 


3. DORIS beacons information

3.1
    Beacon serial number        : 2819045
    Beacon model                : 3.0
    USO serial number           : 3.211
    4 Char. ID of the REF point : MALB
    Date installed (dd/mm/yy)   : 13/01/2005
    Date removed (dd/mm/yy)     : 23/05/2010

3.2
    Beacon serial number        : 2819048
    Beacon model                : 3.0
    USO serial number           : 3.400
    4 Char. ID of the REF point : MALB
    Date installed (dd/mm/yy)   : 23/05/2010
    Date removed (dd/mm/yy)     : 10/06/2013

3.3
    Beacon serial number        : 2819010
    Beacon model                : 3.0
    USO serial number           : 3.226
    4 Char. ID of the REF point : MALB
    Date installed (dd/mm/yy)   : 10/06/2013
    Date removed (dd/mm/yy)     : 22/09/2021

3.4
    Beacon serial number        : 19104019I
    Beacon model                : 4.0
    USO serial number           : 4.P0017
    4 Char. ID of the REF point : MALC
    Date installed (dd/mm/yy)   : 24/09/2021
    Date removed (dd/mm/yy)     : 


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

    Solution         : dpod2014_054 (tie to MALB)
    Epoch            : 2000.0

    X = 1803660.191 m    Y = 6100020.950 m    Z = 463204.544 m
    Sig X = 0.000 m    Sig Y = 0.003 m    Sig Z = 0.002 m

    VX = -0.0434 m/y    VY = 0.0096 m/y    VZ = 0.0347 m/y
    Sig VX = m/y    Sig VY = m/y    Sig VZ = m/y


5. IERS colocation information


6. Tide Gauge colocation information

6.1
    Name         : Male
    Location     : Male airport
    GLOSS number : 28
    Distance     : 477 m
    Notes        : 


7. Local site ties

7.1
    Point description      : DORIS antenna reference point (MALB)
    DOMES number           : 22901S002
    Differential components from the DORIS ref. point (MALB)
    to the above point (in the ITRS) :
    dX (m)                 : 23.214
    dY (m)                 : -5.767
    dZ (m)                 : -11.775
    Accuracy (m)           : 0.001
    Date measured          : 24/09/2021
    Additional information : Survey by IGN-F

7.2
    Point description      : Mark under DORIS antenna (MALC)
    DOMES number           : 22901M004
    Differential components from the DORIS ref. point (MALC)
    to the above point (in the ITRS) :
    dX (m)                 : -0.685
    dY (m)                 : -2.318
    dZ (m)                 : -0.176
    Accuracy (m)           : 0.001
    Date measured          : 24/09/2021
    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 (MALC)
    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             : + 33 1 43 98 84 50
    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