ASCG Site Information Form (site log) International GNSS Service See Instructions at: ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Thomas DONAL Date Prepared : 2015-10-16 Report Type : update If Update: Previous Site Log : ascg_20150916.log Modified/Added Sections : 3.1,3.2 1. Site Identification of the GNSS Monument Site Name : Ascension Four Character ID : ASCG Monument Inscription : None IERS DOMES Number : 30602M004 CDP Number : Monument Description : concrete pillar and 40 cm steel antenna mount Height of the Monument : 2 m Monument Foundation : concrete block Foundation Depth : 1.4 m Marker Description : brass hemispheric mark Date Installed : 2015-07-24T00:00Z Geologic Characteristic : Bedrock Type : Bedrock Condition : Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : GNSS station located at ARIANE Tracking Station : site managed by European Space Agency 2. Site Location Information City or Town : Ascension Island State or Province : British Overseas Territory Country : Saint Helena, Ascension and Tristan Da Cunha Tectonic Plate : SOUTH AMERICAN Approximate Position (ITRF) X coordinate (m) : 6121151.5493 Y coordinate (m) : -1563978.9235 Z coordinate (m) : -872615.3556 Latitude (N is +) : -075458.61168 Longitude (E is +) : -0141957.59211 Elevation (m,ellips.) : 37.953 Additional Information : coordinates in IGS08 : EPOCH 2015:217 (05/08/2015) 3. GNSS Receiver Information 3.1 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 5340K46069 Firmware Version : 5.01 Elevation Cutoff Setting : 3 deg Date Installed : 2015-07-24T00:00Z Date Removed : 2015-10-16T15:05Z Temperature Stabiliz. : 25 C +/- 5 C Additional Information : 3.2 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 5340K46069 Firmware Version : 5.01 Elevation Cutoff Setting : 0 deg Date Installed : 2015-10-16T15:10Z Date Removed : CCYY-MM-DDThh:mmZ Temperature Stabiliz. : 25 C +/- 5 C Additional Information : 3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions) Satellite System : (GPS+GLO+GAL+BDS+QZSS+SBAS) Serial Number : (A20, but note the first A5 is used in SINEX) 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 : TRM59800.00 NONE Serial Number : 5406354931 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 000.4080 Marker->ARP North Ecc(m) : -000.0007 Marker->ARP East Ecc(m) : 000.0001 Alignment from True N : 0 deg Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : TRIMBLE LMR-400 Antenna Cable Length : 30 m Date Installed : 2015-07-24T00:00Z 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 5.1 Tied Marker Name : DORIS antenna ref. pt.(ASEB) Tied Marker Usage : Tied Marker CDP Number : Tied Marker DOMES Number : 30602S005 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 2.4840 dy (m) : 2.1301 dz (m) : 9.4481 Accuracy (mm) : 1 mm Survey method : TRIANGULATION Date Measured : 2015-07-23T00:00Z Additional Information : high geodetic surveying proceed by IGN-F 5.2 Tied Marker Name : Mark under DORIS antenna(ASEB) Tied Marker Usage : Tied Marker CDP Number : Tied Marker DOMES Number : 30602M003 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 1.4377 dy (m) : 2.3976 dz (m) : 9.5981 Accuracy (mm) : 1 mm Survey method : TRIANGULATION Date Measured : 2015-07-23T00:00Z Additional Information : high geodetic surveying proceed by IGN-F 5.3 Tied Marker Name : Mark under former Doris antenna (ASDB) Tied Marker Usage : Tied Marker CDP Number : Tied Marker DOMES Number : 30602M002 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 9.42881 dy (m) : 35.7635 dz (m) : 2.5502 Accuracy (mm) : 1 mm Survey method : TRIANGULATION Date Measured : 2015-07-23T00:00Z Additional Information : high geodetic surveying proceed by IGN-F 5.4 Tied Marker Name : Tide gauge English Bay: POL18 mark Tied Marker Usage : Tied Marker CDP Number : Tied Marker DOMES Number : Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : -1122.246 dy (m) : -5758.161 dz (m) : 2565.026 Accuracy (mm) : 3 mm Survey method : TRIANGULATION Date Measured : 2015-07-23T00:00Z Additional Information : surveying proceed by IGN-F 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 : 2015-07-24/CCYY-MM-DD 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 : DORIS Status : PERMANENT Effective Dates : 1997-02-28/CCYY-MM-DD Notes : 7.2 Instrumentation Type : TIDE GAUGE Status : PERMANENT Effective Dates : 1993-01-01/CCYY-MM-DD Notes : GLOSS ID: 263 : located at English Bay, : 6 km far away from ASCG : Agency: National Oceanography Centre 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.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 : (CCYY-MM-DD/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.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.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.x Other Instrumentation : (multiple lines) 9. Local Ongoing Conditions Possibly Affecting Computed Position 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.x Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.3.x Signal Obstructions : (TREES/BUILDINGS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 10. Local Episodic Effects Possibly Affecting Data Quality 10.x Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 11. On-Site, Point of Contact Agency Information Agency : European Space Agency Preferred Abbreviation : ESA Mailing Address : ESA Telemetry Tracking Station : Ascension Island : British Overseas Territory : United Kingdom Primary Contact Contact Name : Caroline Yon Telephone (primary) : 00 247 46 22 Telephone (secondary) : Fax : E-mail : stadir@cwimail.co.ac Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : 12. Responsible Agency (if different from 11.) Agency : Centre National d'Etudes Spatiales Preferred Abbreviation : CNES Mailing Address : CNES DCT/ME/NC 18, avenue Edouard Belin : 31401 Toulouse cedex 09 - France Primary Contact Contact Name : Alain Brissaud Telephone (primary) : Telephone (secondary) : Fax : E-mail : alain.brissaud@cnes.fr Secondary Contact Contact Name : Jean Paul Cardaliaguet Telephone (primary) : (33) 5.61.27.31.98 Telephone (secondary) : (33) 5.61.28.35.22 Fax : E-mail : jean-paul.cardaliaguet@cnes.fr Additional Information : generic email - regina.operation@cnes.fr 13. More Information Primary Data Center : IGN Secondary Data Center : CDDIS URL for More Information : Hardcopy on File Site Map : Site Diagram : Horizon Mask : Monument Description : Site Pictures : Additional Information : : (multiple lines) Antenna Graphics with Dimensions TRM59800.00 ----- / \ | | +-------------------------------------------------+ <-- 0.1020 TCR | | | | | | | | +-+-------------------------------------------------+-+ <-- 0.0381 +-------------------+-------------+-------------------+ <-- 0.0350 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP <-- 0.3810 --> Abbreviations ------------- ARP: antenna reference point BCR: bottom of chokering BPA: bottom of preamplifier TCR: top of chokering Dimensions ---------- All dimensions are in meters.