Subject: [IGSMAIL-1148] New ESA GPS receiver at Malindi (MALI)
From: ESOC IGS team
Date: Wed, 6 Dec 1995 9:46:27 PST

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IGS Electronic Mail      Wed Dec  6  9:46:27 PST 1995      Message Number 1148
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Author: ESOC IGS team
Subject: New ESA GPS receiver at Malindi (MALI)

Subject: New ESA GPS receiver at Malindi (MALI)

A GPS receiver has been installed at Malindi, Kenya, in
the ESA San Marco Telemetry station. The receiver is a
MiniRogue SNR-8C with the antenna DORNE MARGOLIN B 
mounted on a new geodetic monument.

We are currently retrieving the data to ESOC daily using
the communication links that have been set up for other
ESA projects and that could be discontinued, but a
dedicated solution for the receiver seems to be feasible.

We are experiencing problems with the high drift of
the internal frequency reference of the receiver,
around 300 ns/s. We are planning a test this week 
using an external (also quartz) reference available
on the station.

Data are available from DOY 316/95 on. They will be
distributed to the data centres.

An approximate set of marker coordinates is the following:

      X: 4865.366 Km
      Y: 4110.740 Km
      Z: -331.122 Km

A copy of the station information form is included below.

Best regards.

**********************************
     SITE INFORMATION FORM
**********************************

 0. Form

         Prepared by            : C.Garcia
         Date                   : 01/12/95
         Report type            : NEW

 1. Site Identification of the GPS monument

         Site Name              : Malindi
         4 char ID              : MALI
         Monument Inscription   : None
         IERS DOMES Number      : None
         CDP Number             : None
         Date                   : 01/12/95
         Additional information : Mark at the center of a horizontal
                                  metal plate embedded on the concrete
                                  monument.

 2. Site Location

         City                   : Malindi
         Country                : Kenya
         Tectonic Plate         : African
         Additional information : None

 3. GPS Receiver

         Type                   : ROGUE SNR-8C
         Serial Number          : 303
         Firmware Version       : MEENIX 7.8 / RUSE 4.2
         Date                   : 01/12/95

 4. GPS Antenna

         Type                   : DORNE MARGOLIN B
         Serial Number          : 124
         Date                   : 01/12/95

         Vertical Antenna Height: 0.222
         Antenna Reference Point: BCR
         Date                   : 01/12/95

    The antenna height is measured from the GPS monument to the antenna
    reference point (ARP) as it has been defined in the graphics (item 10).

 5. Local Site Ties

Monument             CDP    DOMES              Components        Accuracy  Date
Inscription          Number Number       dX        dY        dZ     mm yy-mm-dd

.................... ....  ......... ......... ......... .........  .. ........
.................... ....  ......... ......... ......... .........  .. ........

    Differential coordinates from the GPS monument to the reference and other
    monuments. The components are parallel to the XYZ-axes of the global
    geocentric reference system ITRF (WGS-84).

    "Accuracy" is estimated accuracy of local survey (millimeters).

 6. Frequency standard

         H-maser /   /   Cesium /   /    Quartz /   /     Internal / X /
         Other (specify)        : None
         Date                   : 01/12/95

         (Mark with 'X')

 7. Collocation

         SLR    /   /    VLBI  /   /     DORIS  /   /     PRARE    /   /

         Other GEOPHYSICAL Instrumentation (specify)        : None

         Other (specify)        : None

         (Mark with 'P' for permanent, 'M' for mobile collocation)

 8. On-site Agency Information

         Agency                 : San Marco Telemetry Station
         Contact                : At ESOC
         Address                : San Marco Telemetry Station
                                  PO Box 203
                                  Malindi
                                  Kenya
                                  East Africa
         Telephone              : 00-254-123-20108
                                : 00-254-123-21061
         E-mail                 :
         Fax                    : 00-254-123-31148

 9. Responsible Operations Agency
    (if different from item 8)

         Agency                 : ESA / ESOC
         Contact                : J.Dow
         Address                : Robert-Bosch-Strasse 5
                                  D-6100
                                  Darmstadt
                                  Germany
         Telephone              : 49-6151-902272
         E-mail                 : [email-masked]
         Fax                    : 49-6151-90495

 10. Please insert here the character graphics corresponding to the antenna
     type. Check, complete or change if necessary the antenna dimensions.

     Rogue:  DORNE MARGOLIN B  (Allen Osborne Design)

                          -----
                      /     +     \                        <--  0.096  L2
                     |      +      |                       <--  0.078  L1
   +-----------------+-------------+------------------+    <--  0.070  TCR
   |                                                  |
   |                                                  |
   |                                                  |
   |                                                  |
   |                                                  |
   +-----------------+------x------+------------------+    <--  0.000  ARP
                     |             |
                     +-------------+                       <-- -0.011
                           ||  ||

   <--                    0.351                     -->

   ARP: Antenna Reference Point
   L1 : L1 Phase Center                   L2 : L2 Phase Center
   TCR: Top of Chokering                  BCR: Bottom of Chokering

 11. Hard copy information

     The next items should be compiled and sent to the Central Bureau (see
     original IGS Station Information Report).

     Please mark 'X' if on file or date expected to be available.

         Site Map               : X
         Site Diagram           : X
         Horizon Mask           :
         Monument description   : X
         Site pictures          : X

[Mailed From: [email-masked] (C. Garcia Martinez x2088 A141 gmv/fcsd/oad)]