From: ESOC IGS team Subject: [IGSMAIL-1148] New ESA GPS receiver at Malindi (MALI) Date: Wed, 6 Dec 1995 9:46:27 PST ****************************************************************************** IGS Electronic Mail Wed Dec 6 9:46:27 PST 1995 Message Number 1148 ****************************************************************************** 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 : jdow@esoc.esa.de 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: cagarcia@esoc.esa.de (C. Garcia Martinez x2088 A141 gmv/fcsd/oad)]