BORK00DEU Site Information Form (site log) International GNSS Service See Instructions at: https://files.igs.org/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : GOW Operator (gnss_wtz@bkg.bund.de) Date Prepared : 2023-06-01 Report Type : UPDATE If Update: Previous Site Log : bork00deu_20230511.log Modified/Added Sections : 11 1. Site Identification of the GNSS Monument Site Name : Borkum Four Character ID : BORK Monument Inscription : 674 IERS DOMES Number : 14268M001 CDP Number : (A4) Monument Description : CIRCULAR STEEL TUBE MOUNT Height of the Monument : 1.5 m Monument Foundation : SCREW ANCHORED ON WALL OF BUILDING Foundation Depth : (m) Marker Description : RIVET THREAD ON THE CIRCULAR STEEL TUBE Date Installed : 2000-09-29T00:00Z Geologic Characteristic : CENOZOIC QUATERNARY Bedrock Type : (IGNEOUS/METAMORPHIC/SEDIMENTARY) Bedrock Condition : (FRESH/JOINTED/WEATHERED) Fracture Spacing : (0 cm/1-10 cm/11-50 cm/51-200 cm/over 200 cm) Fault zones nearby : NO Distance/activity : (multiple lines) Additional Information : Antenna mounted with a special : tribrach on a rivet thread of a : circular tube of steel, 1.5 m : length. Fixed on the gable of : a building (WSA Emden), 10.0 m : above the ground. Marked in 1999. 2. Site Location Information City or Town : Borkum State or Province : Lower Saxony (Niedersachsen) Country : Germany Tectonic Plate : EURASIAN Approximate Position (ITRF) X coordinate (m) : 3770134.807 Y coordinate (m) : 446054.238 Z coordinate (m) : 5108090.925 Latitude (N is +) : +533349.10 Longitude (E is +) : +0064450.79 Elevation (m,ellips.) : 54.2 Additional Information : Mentioned ETRF89 epoch 89.0 : coordinates are derived from : the network adjustment of the : Tide Gauge GPS campaign PEGEL99. : The elevation refers to the : surface of the tube. : Island in the Northsea. 3. GNSS Receiver Information 3.1 Receiver Type : TRIMBLE 4000SSI Satellite System : GPS Serial Number : 3752A21439 Firmware Version : 7.29 Elevation Cutoff Setting : 0 deg Date Installed : 2000-09-29T00:00Z Date Removed : 2000-11-09T09:30Z Temperature Stabiliz. : none Additional Information : Firmware removed because of : the 12-channel TRIMBLE 4000SSI : problems, announced on : 04-FEB-2000 via CANSPACE by Mike : Jackson from UNAVCO. 3.2 Receiver Type : TRIMBLE 4000SSI Satellite System : GPS Serial Number : 3752A21439 Firmware Version : 7.19 Elevation Cutoff Setting : 0 deg Date Installed : 2000-11-09T09:30Z Date Removed : 2001-04-18T14:00Z Temperature Stabiliz. : none Additional Information : (multiple lines) 3.3 Receiver Type : TRIMBLE 4700 Satellite System : GPS Serial Number : 0220219865 Firmware Version : 00130|00000|00100 Elevation Cutoff Setting : 0 deg Date Installed : 2001-04-18T14:00Z Date Removed : 2005-01-13T11:05Z Temperature Stabiliz. : none Additional Information : (multiple lines) 3.4 Receiver Type : TRIMBLE 4700 Satellite System : GPS Serial Number : 0220219865 Firmware Version : 00141|00000|00100 Elevation Cutoff Setting : 0 deg Date Installed : 2005-01-13T11:05Z Date Removed : 2007-06-04 Temperature Stabiliz. : none Additional Information : Firmware update 3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions) Satellite System : (GPS+GLO+GAL+BDS+QZSS+IRNSS+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 : TRM29659.00 SNOW Serial Number : 0220187547 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0540 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : SNOW Radome Serial Number : Antenna Cable Type : RG 214 Antenna Cable Length : 30 m Date Installed : 2000-09-29T00:00Z Date Removed : 2001-10-11T00:00Z Additional Information : Antenna calibrated, IGS conform, : by LGN. : Antenna type calibrated : absolute, field measurements, : by Geo++ GmbH, Garbsen. : PCV are available at 11. : Trimble Antenna TRM29659.00 : with white conical Ashtech : Radome SNOW. 4.2 Antenna Type : TRM29659.00 SNOW Serial Number : 0220187547 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0530 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : SNOW Radome Serial Number : Antenna Cable Type : RG 214 Antenna Cable Length : 30 m Date Installed : 2001-10-11T00:00Z Date Removed : 2003-06-02T12:20Z Additional Information : New measurement with higher : accuracy led to the change of : the antenna height by 1 mm. : There was no variation of the : antenna itself. : L2 interferences of the TRM29659.00 : SNOW have produced decreasing data : quantities below 15 degree elevation : since 2003-03-19. 4.3 Antenna Type : TRM33429.20+GP NONE Serial Number : 0220226150 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0530 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : RG 214 Antenna Cable Length : 30 m Date Installed : 2003-06-02T12:21Z Date Removed : 2003-07-01T09:00Z Additional Information : Antenna individual calibrated : absolute, field measurements, : by Geo++ GmbH, Garbsen. 4.4 Antenna Type : TRM29659.00 SNOW Serial Number : 0220180416 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0530 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : SNOW Radome Serial Number : Antenna Cable Type : RG 214 Antenna Cable Length : 30 m Date Installed : 2003-07-01T10:02Z Date Removed : 2007-06-04 Additional Information : Antenna individual calibrated : absolute, field measurements, : by Institut fuer Erdmessung IfE, : University of Hannover, PCV are : available at 11. 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 : (if external) Effective Dates : 2000-09-29/CCYY-MM-DD Notes : (multiple lines) 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.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 : Bundesamt fuer Kartographie und Geodaesie : Department of Geodaesie Preferred Abbreviation : BKG Mailing Address : Richard-Strauss-Allee 11 : D-60598 Frankfurt a.M. : Germany Primary Contact Contact Name : GOW Operator Telephone (primary) : +49 9941 6030 Telephone (secondary) : +49 9941 603122 Fax : +49 9941 603222 E-mail : gnss_wtz@bkg.bund.de Secondary Contact Contact Name : BKG GNSS Data Center Telephone (primary) : +49 69 6333274 Telephone (secondary) : +49 69 63331 Fax : +49 69 6333425 E-mail : bkg-gdc@bkg.bund.de Additional Information : (multiple lines) 12. Responsible Agency (if different from 11.) Agency : (multiple lines) Preferred Abbreviation : (A10) Mailing Address : (multiple lines) Primary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : (multiple lines) 13. More Information Primary Data Center : BKG Secondary Data Center : BEV URL for More Information : Hardcopy on File Site Map : (Y or URL) Site Diagram : (Y or URL) Horizon Mask : (Y or URL) Monument Description : Y Site Pictures : Y Additional Information : (multiple lines) Antenna Graphics with Dimensions ANTENNA DIMENSIONS ------------------ Pictures for most of the antennas given here are available at the NGS on the WWW page: http://www.grdl.noaa.gov/GPS/PROJECTS/ANTCAL/antcal.html The L1 and L2 antenna phase center offsets given in these drawings here are manufacturer values and should not be used anymore. The official IGS set of mean offsets and elevation-dependent phase center variations are given in the file IGS_01.PCV. TRM29659.00 with white concical Ashtech Dome SNOW from 2000-09-29 until 2003-06-02 ----- / + \ <-- 0.128 L2 | + | <-- 0.110 L1 +--------------------------------------------------+ <-- 0.102 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.038 +-------------------+-------------+--------------------+ <-- 0.035 BCR | | =| | +------x------+ <-- 0.000 BPA=ARP <-- 0.381 --> TRM33429.20+GP without Dome from 2003-06-02 until 2003-07-01 ----+---- <-- 0.0740 L1 / + \ <-- 0.0703 L2 ++----------------+-----------------+-----------------++ <-- 0.0631 TGP ++---------------+-------------------+----------------++ <-- 0.0596 BGP | | | | | | +-------x-------+ <-- 0.000 ARP=BPA <-- 0.4668 --> INNER EDGE <-- 0.4826 --> OUTER EDGE ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering TGP: Top of Ground Plane BGP: Bottom of Ground Plane TPA: Top of Preamplifier BPA: Bottom of Preamplifier TOP: Top of Pole TRM29659.00 with white concical Ashtech Dome SNOW from 2003-07-01 ----- / + \ <-- 0.128 L2 | + | <-- 0.110 L1 +--------------------------------------------------+ <-- 0.102 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.038 +-------------------+-------------+--------------------+ <-- 0.035 BCR | | =| | +------x------+ <-- 0.000 BPA=ARP <-- 0.381 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering TGP: Top of Ground Plane BGP: Bottom of Ground Plane