TU Delft GNSS team (gnss-citg@tudelft.nl) 2026-08-27 UPDATE Delft DLF1 Delft-22 13502M009 STEEL MAST ON CONCRETE BUILDING 1.5 ROOF ON CONCRETE BUILDING, PILLARS 15.0 BRASS THREAD/FIXED CENTERING 2002-09-04T00:00:00Z SAND SEDIMENTARY FRESH NO Delft Zuid-Holland Netherlands (the) EURASIAN 3924697.942 301124.893 5001905.154 51.9860194444 4.3874583333 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 4.22 0 2011-04-15T10:00:00Z 2011-06-22T11:20:00Z 3.0 2011-04-15T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 4.42 0 2011-06-22T11:20:00Z 2012-02-01T12:32:00Z 3.0 2011-06-22T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 4.43 0 2012-02-01T12:32:00Z 2012-05-03T11:30:00Z 3.0 2012-02-01T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 4.46 0 2012-05-03T11:30:00Z 2012-05-08T11:05:00Z 3.0 2012-05-03T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 4.60 0 2012-05-08T11:05:00Z 2013-02-18T22:15:00Z 3.0 2012-05-08T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 4.70 0 2013-02-18T22:15:00Z 2013-05-09T06:05:00Z 3.0 2013-02-18T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 4.80 0 2013-05-09T06:05:00Z 2013-08-12T14:15:00Z 3.0 2013-05-09T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 4.81 0 2013-08-12T14:15:00Z 2015-06-17T21:30:00Z 3.0 2013-08-12T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 5.01 0 2015-06-17T21:30:00Z 2015-07-13T17:10:00Z 3.0 2015-06-17T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 5.03 0 2015-07-13T17:10:00Z 2016-07-20T16:15:00Z 3.0 2015-07-13T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 5.14 0 2016-07-20T16:15:00Z 2016-12-21T18:43:00Z 3.0 2016-07-20T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 5.15 0 2016-12-21T18:43:00Z 2017-05-28T09:12:00Z 3.0 2016-12-21T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 5.22 0 2017-05-28T09:12:00Z 2018-10-29T14:02:00Z 3.0 2017-05-28T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 5.37 0 2018-10-29T14:03:00Z 2019-10-26T13:23:00Z 3.0 2018-10-29T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 5.43 0 2019-10-26T13:23:00Z 2020-05-16T15:15:00Z 3.0 2019-10-26T00:00:00Z 5039K70764 TRIMBLE NETR9 GPS+GLO+GAL+BDS+QZSS+SBAS 5.45 0 2020-05-16T15:15:00Z 2023-04-24T12:15:00Z 3.0 2020-05-16T00:00:00Z 6235R40294 TRIMBLE ALLOY GPS+GLO+GAL+BDS+QZSS+SBAS 6.20 0 2023-04-24T12:15:00Z 2026-08-27T08:07:00Z 3.0 2023-04-24T15:18:12Z 6235R40294 TRIMBLE ALLOY GPS+GLO+GAL+BDS+QZSS+SBAS 6.60 0 2026-08-27T08:07:00Z 3.0 2026-08-27T09:10:32Z 10030006 LEIAR25.R3 LEIT BPA 0.0000 0.0000 0.0000 0 LEIT 10030006 LMR400 41.5 2011-04-15T10:00:00Z 2011-04-15T00:00:00Z GPS (mark #16) GPS DELF (EUREF) 13502M004 -10.411 7.96 5.775 1 TRILAT./TRIANG./LEVELLING/GPS CAMPAIGN 1994-04-19T00:00:00Z The ties are checked twice per year using a local survey, unless there are significant changes the results are not reported here 1994-04-19T00:00:00Z GPS (mark #20) GPS DLFT (IGS) 13502M006 -0.92 7.024 -1.705 1 TRILAT./TRIANG./LEVELLING/GPS CAMPAIGN 1994-04-19T00:00:00Z The ties are checked twice per year using a local survey, unless there are significant changes the results are not reported here 1994-04-19T00:00:00Z INTERNAL 2011-04-15 2011-06-22 2011-04-15T00:00:00Z EXTERNAL CESIUM 10.0 2011-06-22 Clock steering has been enabled during some periods, and disabled during others. Currently clock steering is enabled. 2011-06-22T00:00:00Z GPS PERMANENT 1994-12-30 EUREF Permanent Network station DELF 1994-12-30T00:00:00Z GPS PERMANENT 1998-08-17 IGS Permanent station DLFT 1998-08-17T00:00:00Z GPS PERMANENT 2004-09-14 JPL GDGPS Permenent station DLF3, operated on the same antenna through an antenna splitter. 2004-09-14T00:00:00Z GPS PERMANENT 2004-09-14 EGNOS Data Collection Network (EDCN) Permanent station DLF5, operated on the same antenna through an antenna splitter. 2004-09-14T00:00:00Z HUMICAP H-Sensor Electronics: Vaisala Humidity and Temperature Transmitter HMP233 Vaisala Oy, Finland P0120011 1.6 1993-09-12 1994-04-19 60 2 NATURAL 1994-04-19T00:00:00Z Vaisala Pressure Transmitter PTB 200A Electronics: Vaisala Pressure Transmitter PTB 200A; pressure sensor below GPS antenna Vaisala Oy, Finland 692620 -2.65 1993-09-12 1994-04-14 60 0.12 1994-04-14T00:00:00Z Pt 100 RTD 1/3 DIN 43760B Electronics: Vaisala Humidity and Temperature Transmitter HMP233 Vaisala Oy, Finland P0120011 1.6 1993-09-12 1994-04-14 60 0.1 NATURAL 1994-04-14T00:00:00Z CELL PHONE ANTENNA 1997-03-25 Located on South tower, 100 meters from GNSS antennae, transmitting in a 240 degrees sector. The GNSS antennae are located in a 120 degrees sector not covered by the GSM system. Test at 5 meters from the GSM antenna have shown no degradation of the GPS, so it is very unlikely that the GPS is affected. NONE 1997-03-25T00:00:00Z ROOF 1994-12-30 Flat roof with concrete balustrade at right angles with the roof, and several 90 degrees corners. Medium multipath effects have been observed. 1994-12-30T00:00:00Z NONE 2011-04-15 2011-04-15T00:00:00Z 1997-03-25 CELL PHONE TRANSMISSION STARTED (SEE 9.1.1) 1997-03-25T00:00:00Z GI-RD Delft University of Technology Department of Geoscience and Remote Sensing (GRS) +31 6 52481939 Stevinweg 1 2628 CN Delft Netherlands (the) rd@kadaster.nl TU Delft GNSS team Delft University of Technology Department of Geoscience and Remote Sensing (GRS) +31 15 2784907 Stevinweg 1 2628 CN Delft Netherlands (the) gnss-citg@tudelft.nl DUT BKG http://gnss1.tudelft.nl/dpga/ ./station/Delft.html ./station/Delft.html ./station/Delft.html ./station/Delft.html ./station/Delft.html No obstacles above 0 degrees of elevation LEIAR25.R3 +-------+ <-- 0.1995 / \ +---+-------------+---+ <-- 0.1606 TCR | | |---------------------------| |---------------------------------| |---------------------------------------| +---------------------------------------------+ | | | | +-+---------------------------------------------+-+ +-----------------+-------------+-----------------+ <-- 0.0320 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP (5/8' thread might differ from BPA!) <-- 0.3802 --> TODO DLF1-20110419-FM.jpg image 2011-04-19T12:34:17Z 2011-04-19T00:00:00Z DLF1-20110419-PAN.jpg image 2011-04-19T00:00:00Z DLF1-20110419-PAN1.jpg image 2011-04-19T00:00:00Z DLF1-20110419-PAN2.jpg image 2011-04-19T00:00:00Z DLF1-20110419-PAN3.jpg image 2011-04-19T00:00:00Z DLF1-20110419-PAN4.jpg image 2011-04-19T00:00:00Z DLF1-20110419-PAN5.jpg image 2011-04-19T00:00:00Z DLF1-20110419-PAN6.jpg image 2011-04-19T00:00:00Z DLF1-20110419-PAN7.jpg image 2011-04-19T00:00:00Z DLF1-20110419-R.jpg image 2011-04-19T12:34:17Z 2011-04-19T00:00:00Z DLF1-20120510-E.JPG image 2012-05-10T11:25:29Z 2012-05-10T00:00:00Z DLF1-20120510-N.JPG image 2012-05-10T11:24:38Z 2012-05-10T00:00:00Z DLF1-20120510-NE.JPG image 2012-05-10T11:25:25Z 2012-05-10T00:00:00Z DLF1-20120510-NW.JPG image 2012-05-10T11:26:25Z 2012-05-10T00:00:00Z DLF1-20120510-R.JPG image 2012-05-10T11:23:45Z 2012-05-10T00:00:00Z DLF1-20120510-S.JPG image 2012-05-10T11:25:42Z 2012-05-10T00:00:00Z DLF1-20120510-SE.JPG image 2012-05-10T11:25:34Z 2012-05-10T00:00:00Z DLF1-20120510-SW.JPG image 2012-05-10T11:25:51Z 2012-05-10T00:00:00Z DLF1-20120510-W.JPG image 2012-05-10T11:26:28Z 2012-05-10T00:00:00Z