Station summaryDLF1

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  • GPS
    Tide Gauge
IGS-type acronym : DLF1
Latitude : 51.98598611
Longitude : 4.38746667
Installed date : 2002-09-04
Decommissioned date :
Station status : active (green)
Distance to Tide Gauge (m) : 12142
Domes Nr.: 13502M009
Station operator: Unknown
IGS-like station form :

GPS position times seriesDLF1


(Reference epoch: )

Offsets (mm)

MMaterial change or malfunction
RFReference Frame change
NANot available
Position discontinuity
Velocity discontinuity
Vertical component
East component
North Component

Data available at SONELDLF1

Quality plots on RINEX filesDLF1

Quality plots on RINEX files of DLF1 Quality plots on RINEX files of DLF1 Royal Observatory of Belgium

Plots generated using software developed with the EPN team at ROB
Observations & tracking performance Satellite tracking

informations (this operation may take 20 to 45s)

The satellite tracking graph has been calculated for all stations for the first day of each month. If you wish to have a graph for another date, choose the 'Calculate a specific date' option.

Comparison with satellite altimetry data

Co-located instrumentsDLF1

Log bookDLF1

[EUREFmail-09939] - 2019-08-05 (06/08/2019)

Today, Monday 5 August, around 14.00 UTC, the receiver DLF100NLD is again operational, streaming and logging data, and data submissions to EUREF and IGS will be resumed.

The antenna had developed a fault Sunday 28 July around 02:54 UTC resulting in a total loss of data for all connected receivers (DLF100NLD, DLF500NLD , DLF600NLD, DLF700NLD, DLF800NLD, DLF900NLD and DLFV00NLD). Today, the antenna was temporarily removed, and an inspection revealed that the connector had developed a fault, but the antenna itself was ok. The antenna cable shortened by 2 meters and a new connector was installed. The antenna and serial number are the same as was used before.

[EUREFmail-09932] - 2019-07-29 (29/07/2019)

The antenna for the station DLF100NLD has developed a fault Sunday 28 July =
around 02:54 UTC resulting in a total loss of data for all connected receiv=
ers (DLF100NLD, DLF500NLD , DLF600NLD, DLF700NLD, DLF800NLD, DLF900NLD and =
DLFV00NLD). For safety reasons I'm not allowed to replace the antenna mysel=
f, and the people who are allowed are on holiday.

Please be advised that the outage may last several days until we can actual=
ly replace the antenna.

[EUREFmail-9571] - 2018-10-05 (08/10/2018)

Due to work on the network switches the Local Data Center in Delft will be unavailable on Saturday October 6, 2018, starting at 08:00 LT (06:00 UTC) in the morning. We expect to be up and running again later in the afternoon on Saturday Oct 6.

During this period there will be no data available through ftp or http. Also, no files will be uploaded to IGS and EPN data centers. However, the LDC will still be able to accept incoming data, and also NTRIP data streams should be unaffected (only the NFS mounts to the data are affected).

[EUREFmail-8743] - 2016-10-03 (05/10/2016)

Saturday Oct 1 2016, 16:26:00 UTC, there were several power outages in Delft following a thunderstorm event. During this event an UPS system malfunctioned affecting several GPS systems: DLF1 (IGS/EUREF), DLF2 (Jaxa), DLF3 (JPL) and DLF5 (EDCN). Power to these systems was restored Monday morning Oct 3 2016 at about 06:45 UTC. During this period no data was logged for any of these receivers.

The DELF receiver (EUREF), which is connected to a different UPS, continued to function and no data was lost for this receiver.