GOW Operator (gnss_wtz@bkg.bund.de) 2023-06-01 UPDATE Borkum BORK 0 0 674 14268M001 1.5 SCREW ANCHORED ON WALL OF BUILDING RIVET THREAD ON THE CIRCULAR STEEL TUBE 2000-09-29T00:00:00Z Borkum Lower Saxony (Niedersachsen) 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. Firmware removed because of the 12-channel TRIMBLE 4000SSI problems, announced on 04-FEB-2000 via CANSPACE by Mike Jackson from UNAVCO. 3752A21439 0.0 0.0 2000-09-29T00:00:00Z 3752A21439 0.0 0.0 2000-11-09T09:30:00Z 0220219865 0.0 0.0 2001-04-18T14:00:00Z Firmware update 0220219865 0.0 0.0 2005-01-13T11:05:00Z 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. 0220187547 0.054 0.0 0.0 0.0 30.0 2000-09-29T00:00:00Z 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. 0220187547 0.053 0.0 0.0 0.0 30.0 2001-10-11T00:00:00Z Antenna individual calibrated absolute, field measurements, by Geo++ GmbH, Garbsen. 0220226150 0.053 0.0 0.0 0.0 30.0 2003-06-02T12:21:00Z Antenna individual calibrated absolute, field measurements, by Institut fuer Erdmessung IfE, University of Hannover, PCV are available at 11. 0220180416 0.053 0.0 0.0 0.0 30.0 2003-07-01T10:02:00Z 2000-09-29 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]]> 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]]>