DAKA Site Information Form (site log) International GPS Service See Instructions at: ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Markus Ramatschi and Boubakar Barry Date Prepared : 2004-01-14 Report Type : UPDATE If Update: Previous Site Log : daka_20030903.log Modified/Added Sections : 3.1, 3.2 1. Site Identification of the GNSS Monument Site Name : Dakar; Universite Cheick Anto Diop Four Character ID : daka Monument Inscription : IERS DOMES Number : 34106M001 CDP Number : (A4) Monument Description : PILLAR Height of the Monument : 0.8 m Monument Foundation : ROOF Foundation Depth : (m) Marker Description : BRASS NAIL Date Installed : 2002-03-21T12:00Z Geologic Characteristic : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc) Bedrock Type : (IGNEOUS/METAMORPHIC/SEDIMENTARY) Bedrock Condition : (FRESH/JOINTED/WEATHERED) Fracture Spacing : (1-10 cm/11-50 cm/51-200 cm/over 200 cm) Fault zones nearby : (YES/NO/Name of the zone) Distance/activity : (multiple lines) Additional Information : (multiple lines) 2. Site Location Information City or Town : Dakar State or Province : Country : Senegal Tectonic Plate : African plate Approximate Position (ITRF) X coordinate (m) : 5886435.5704 Y coordinate (m) : -1852014.7801 Z coordinate (m) : 1606349.4404 Latitude (N is +) : +144105.86 Longitude (E is +) : -0172753.40 Elevation (m,ellips.) : 63.1 Additional Information : (multiple lines) 3. GNSS Receiver Information 3.1 Receiver Type : AOA SNR-8000 ACT Satellite System : GPS Serial Number : 2003 Firmware Version : 3.3.32.3 Elevation Cutoff Setting : 3 Date Installed : 2002-03-21T12:00Z Date Removed : 2004-01-13T15:00Z Temperature Stabiliz. : none Additional Information : (multiple lines) 3.2 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP00791 Firmware Version : CC00 Elevation Cutoff Setting : 3 Date Installed : 2004-01-14T00:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : none Additional Information : (multiple lines) 3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions) Satellite System : (GPS/GLONASS/GPS+GLONASS) Serial Number : (A5) Firmware Version : (A11) Elevation Cutoff Setting : (deg) Date Installed : (CCYY-MM-DDThh:mmZ) Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 4. GNSS Antenna Information 4.1 Antenna Type : AOAD/M_T Serial Number : 368 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.046 Marker->ARP North Ecc(m) : 0.000 Marker->ARP East Ecc(m) : 0.000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : 26 Date Installed : 2002-03-21T12:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : (multiple lines) 4.x Antenna Type : (A20, from rcvr_ant.tab; see instructions) Serial Number : (A*, but note the first A5 is used in SINEX) Antenna Reference Point : (BPA/BCR/XXX from "antenna.gra"; see instr.) Marker->ARP Up Ecc. (m) : (F8.4) Marker->ARP North Ecc(m) : (F8.4) Marker->ARP East Ecc(m) : (F8.4) Alignment from True N : (deg; + is clockwise/east) Antenna Radome Type : (A4 from rcvr_ant.tab; see instructions) Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : (CCYY-MM-DDThh:mmZ) Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : (multiple lines) 5. Surveyed Local Ties 5.x Tied Marker Name : Tied Marker Usage : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc) Tied Marker CDP Number : (A4) Tied Marker DOMES Number : (A9) Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : (m) dy (m) : (m) dz (m) : (m) Accuracy (mm) : (mm) Survey method : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc) Date Measured : (CCYY-MM-DDThh:mmZ) Additional Information : (multiple lines) 6. Frequency Standard 6.1 Standard Type : INTERNAL Input Frequency : Effective Dates : Notes : 6.x Standard Type : (INTERNAL or EXTERNAL H-MASER/CESIUM/etc) Input Frequency : (if external) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 7. Collocation Information 7.1 Instrumentation Type : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc) Status : (PERMANENT/MOBILE) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 7.x Instrumentation Type : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc) Status : (PERMANENT/MOBILE) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8. Meteorological Instrumentation 8.1.1 Humidity Sensor Model : PTU200 Class A Manufacturer : Vaisala Serial Number : U4850002 Data Sampling Interval : 600 Accuracy (% rel h) : 3 Aspiration : UNASPIRATED Height Diff to Ant : -5.3 m Calibration date : 2001-02-12 Effective Dates : 2002-03-21/CCYY-MM-DD Notes : (multiple lines) 8.1.x Humidity Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy (% rel h) : (% rel h) Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : 2002-03-21/CCYY-MM-DD Notes : (multiple lines) 8.2.1 Pressure Sensor Model : PTU200 Class A Manufacturer : Vaisala Serial Number : U4850002 Data Sampling Interval : 600 Accuracy : 0.1 Height Diff to Ant : -8.0 m Calibration date : 2001-02-12 Effective Dates : 2002-03-21/2003-15-02 Notes : (multiple lines) 8.2.1 Pressure Sensor Model : PTU200 Class A Manufacturer : Vaisala Serial Number : X3710008 Data Sampling Interval : 600 Accuracy : 0.1 Height Diff to Ant : -8.0 m Calibration date : CCYY-MM-DD Effective Dates : 2003-15-03/CCYY-MM-DD Notes : (multiple lines) 8.2.x Pressure Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (hPa) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.3.1 Temp. Sensor Model : Manufacturer : PTU200 Class A Serial Number : U4850002 Data Sampling Interval : 600 Accuracy : 0.1 Aspiration : UNASPIRATED Height Diff to Ant : -5.3 m Calibration date : 2001-02-12 Effective Dates : 2002-03-21/CCYY-MM-DD Notes : (multiple lines) 8.3.x Temp. Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (deg C) Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.4.1 Water Vapor Radiometer : Manufacturer : Serial Number : Distance to Antenna : (m) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.4.x Water Vapor Radiometer : Manufacturer : Serial Number : Distance to Antenna : (m) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.5.1 Other Instrumentation : (multiple lines) 8.5.x Other Instrumentation : (multiple lines) 9. Local Ongoing Conditions Possibly Affecting Computed Position 9.1.1 Radio Interferences : (TV/CELL PHONE ANTENNA/RADAR/etc) Observed Degradations : (SN RATIO/DATA GAPS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.1.x Radio Interferences : (TV/CELL PHONE ANTENNA/RADAR/etc) Observed Degradations : (SN RATIO/DATA GAPS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.2.1 Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.2.x Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.3.1 Signal Obstructions : (TREES/BUILDLINGS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.3.x Signal Obstructions : (TREES/BUILDLINGS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 10. Local Episodic Effects Possibly Affecting Data Quality 10.1 Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 10.x Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 11. On-Site, Point of Contact Agency Information Agency : Universite Cheikh Anta Diop Preferred Abbreviation : UCAD Mailing Address : 5353 Dakar-Fann SENEGAL Primary Contact Contact Name : Boubakar Barry Telephone (primary) : (+221)824-1932 Telephone (secondary) : Fax : (+221)-825-6576 E-mail : barry@ucad.sn Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : (multiple lines) 12. Responsible Agency (if different from 11.) Agency : GFZ Potsdam Preferred Abbreviation : GFZ Mailing Address : Telgrafenberg A17 D-14473 Potsdam Primary Contact Contact Name : Markus Ramatschi Telephone (primary) : (+49)-331-2881746 Telephone (secondary) : Fax : (+49)-331-2881747 E-mail : maram@gfz-potsdam.de Secondary Contact Contact Name : Thomas Nischan Telephone (primary) : (+49)-331-2881756 Telephone (secondary) : Fax : (+49)-331-2881111 E-mail : nisn@gfz-potsdam.de Additional Information : (multiple lines) 13. More Information Primary Data Center : CDDIS Secondary Data Center : BKG URL for More Information : www.gfz-potsdam.de/pb1/igs/igs_stat/daka.htm Hardcopy on File Site Map : (Y or URL) Site Diagram : (Y or URL) Horizon Mask : (Y or URL) Monument Description : (Y or URL) Site Pictures : (Y or URL) Additional Information : (multiple lines) Antenna Graphics with Dimensions TURBOROGUE: DORNE MARGOLIN T ----- / + \ <-- 0.128 L2 | + | <-- 0.110 L1 +--------------------------------------------------+ <-- 0.102 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.038 +-------------------+-------------+--------------------+ <-- 0.035 BCR | | | | +------x------+ <-- 0.000 ARP <-- 0.381 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering