KOS100NLD 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) : TU Delft GNSS team (gnss-citg@tudelft.nl)
Date Prepared : 2023-04-17
Report Type : UPDATE
If Update:
Previous Site Log : kos100nld_20221206.log
Modified/Added Sections : 11
1. Site Identification of the GNSS Monument
Site Name : Kootwijk Observatory for Satellite Geodesy
Four Character ID : KOS1
Monument Inscription : None
IERS DOMES Number : 13504M005
CDP Number : (A4)
Monument Description : STEEL MAST
Height of the Monument : 1.5 m
Monument Foundation : CONCRETE BUILDING
Foundation Depth : (m)
Marker Description : Bottom of the pin under the antenna mount
Date Installed : 2013-05-23
Geologic Characteristic : SAND
Bedrock Type : 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 : The GNSS antenna is mounted on a short mast on
: the roof of Radio Kootwijk (nickname
: 'Cathedral'), nearby, and in sight of, the
: former Kootwijk Observatory for Satellite
: Geodesy (KOSG). The building is a very sturdy
: concrete structure build in the 1930's to
: house long wave long distance radio
: transmitters (now removed). The building is
: nowadays a protected monument.
: The station is operating under responsibility
: of the AGRS.NL organisation (RWS/KAD/TUD)
: Dutch triangulation RD site+marker 339352-02
2. Site Location Information
City or Town : Kootwijk
State or Province : Gelderland
Country : Netherlands (the)
Tectonic Plate : EURASIAN
Approximate Position (ITRF)
X coordinate (m) : 3899613.948
Y coordinate (m) : 397361.592
Z coordinate (m) : 5014738.666
Latitude (N is +) : +521024.08
Longitude (E is +) : +0054905.61
Elevation (m,ellips.) : 104.8
Additional Information : Near Apeldoorn
3. GNSS Receiver Information
3.1 Receiver Type : SEPT POLARX4
Satellite System : GPS+GLO+GAL+BDS+QZSS+SBAS
Serial Number : 3002129
Firmware Version : 2.3.4
Elevation Cutoff Setting : 0 deg
Date Installed : 2013-06-18T12:20Z
Date Removed : 2013-09-09T02:00Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.2 Receiver Type : SEPT POLARX4
Satellite System : GPS+GLO+GAL+BDS+QZSS+SBAS
Serial Number : 3002129
Firmware Version : 2.5.2
Elevation Cutoff Setting : 0 deg
Date Installed : 2013-09-10T09:58Z
Date Removed : 2015-02-18T15:32Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.3 Receiver Type : SEPT POLARX4
Satellite System : GPS+GLO+GAL+BDS+QZSS+SBAS
Serial Number : 3002129
Firmware Version : 2.7-beta1
Elevation Cutoff Setting : 0 deg
Date Installed : 2015-02-18T15:33Z
Date Removed : 2015-06-18T08:43Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.4 Receiver Type : SEPT POLARX4
Satellite System : GPS+GLO+GAL+BDS+QZSS+SBAS
Serial Number : 3002129
Firmware Version : 2.9.0
Elevation Cutoff Setting : 0 deg
Date Installed : 2015-06-18T08:45Z
Date Removed : 2017-01-18T15:04Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.5 Receiver Type : SEPT POLARX4
Satellite System : GPS+GLO+GAL+BDS+QZSS+SBAS
Serial Number : 3002129
Firmware Version : 2.9.5
Elevation Cutoff Setting : 0 deg
Date Installed : 2017-01-18T15:04Z
Date Removed : 2017-01-18T19:45Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.6 Receiver Type : SEPT POLARX4
Satellite System : GPS+GLO+GAL+BDS+QZSS+SBAS
Serial Number : 3002129
Firmware Version : 2.9.6
Elevation Cutoff Setting : 0 deg
Date Installed : 2017-01-18T19:45Z
Date Removed : 2018-12-17T12:45Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.7 Receiver Type : SEPT POLARX4
Satellite System : GPS+GLO+GAL+BDS+QZSS+SBAS
Serial Number : 3002129
Firmware Version : 2.9.6-patch2
Elevation Cutoff Setting : 0 deg
Date Installed : 2018-12-17T12:49Z
Date Removed : 2020-04-20T07:30Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.8 Receiver Type : SEPT POLARX4
Satellite System : GPS+GLO+GAL+BDS+QZSS+SBAS
Serial Number : 3002074
Firmware Version : 2.9.6-patch2
Elevation Cutoff Setting : 0 deg
Date Installed : 2020-04-20T07:30Z
Date Removed : 2020-09-21T12:15Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.9 Receiver Type : SEPT POLARX5E
Satellite System : GPS+GLO+GAL+BDS+QZSS+IRNSS+SBAS
Serial Number : 3048419
Firmware Version : 5.3.2
Elevation Cutoff Setting : 0 deg
Date Installed : 2020-09-21T12:15Z
Date Removed : 2022-12-06T14:16Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.10 Receiver Type : SEPT POLARX5E
Satellite System : GPS+GLO+GAL+BDS+QZSS+IRNSS+SBAS
Serial Number : 3048419
Firmware Version : 5.5.0
Elevation Cutoff Setting : 0 deg
Date Installed : 2022-12-06T14:17Z
Date Removed : CCYY-MM-DDThh:mmZ
Temperature Stabiliz. : none
Additional Information : (multiple lines)
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 : LEIAR25.R3 LEIT
Serial Number : 10050009
Antenna Reference Point : BPA
Marker->ARP Up Ecc. (m) : 0.1300
Marker->ARP North Ecc(m) : 0.0000
Marker->ARP East Ecc(m) : 0.0000
Alignment from True N : 0 deg
Antenna Radome Type : LEIT
Radome Serial Number : 10050009
Antenna Cable Type : CA600
Antenna Cable Length : 30 m
Date Installed : 2013-05-23T00:00Z
Date Removed : CCYY-MM-DDThh:mmZ
Additional Information : Antenna and radome have been absolutely
: calibrated by geo++
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 : KOSG-25
Tied Marker Usage : GPS (KOSG Permanent GPS)
Tied Marker CDP Number : (A4)
Tied Marker DOMES Number : 13504M003
Differential Components from GNSS Marker to the tied monument (ITRS)
dx (m) : -388.530 m
dy (m) : -630.930 m
dz (m) : 339.580 m
Accuracy (mm) : 5 mm
Survey method : GPS CAMPAIGN
Date Measured : 2013-06-27T00:00Z
Additional Information : Provisional result from GPS data, local
: survey with triangulation, trilateration
: and levelling has been conducted. Results
: are pending.
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 : 2013-06-27/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
7.1 Instrumentation Type : RELATIVE GRAVIMETERS
Status : MOBILE
Effective Dates : 1973-01-01/2004-12-31
Notes : (multiple lines)
7.2 Instrumentation Type : ABSOLUTE GRAVIMETERS
Status : MOBILE
Effective Dates : 1973-01-01/CCYY-MM-DD
Notes : Micro-g FG-5 #234 (yearly)
7.3 Instrumentation Type : SEISMOMETER
Status : PERMANENT
Effective Dates : 1973-01-01/1995-12-31
Notes : (multiple lines)
7.4 Instrumentation Type : SLR
Status : MOBILE
Effective Dates : 1984-01-01/1996-12-31
Notes : Regular occupations by MTLRS-2
7.5 Instrumentation Type : UNDERGROUND LEVELING BENCHMARK
Status : PERMANENT
Effective Dates : 2013-05-23/CCYY-MM-DD
Notes : (multiple lines)
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 : Kadaster
: Geodetische Infrastructuur -
: Rijksdriehoeksmeting
Preferred Abbreviation : KAD
Mailing Address : Hofstraat 110
: 7311KZ Apeldoorn
: Netherlands (the)
Primary Contact
Contact Name : GI-RD
Telephone (primary) : +31 6 52481939
Telephone (secondary) :
Fax :
E-mail : rd@kadaster.nl
Secondary Contact
Contact Name : TU Delft GNSS team
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail : gnss-citg@tudelft.nl
Additional Information : Primary contact for non IGS and EPN related
: activities concerning this station
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 : IGN
URL for More Information : http://gnss1.tudelft.nl/dpga/
Hardcopy on File
Site Map : ./dpga/station/Kootwijk.html
Site Diagram : X
Horizon Mask : X
Monument Description : X
Site Pictures : ./dpga/station/Kootwijk.html
Additional Information : (multiple lines)
Antenna Graphics with Dimensions
LEIAR25.R3
+-------+ <-- 0.1995
/ \
+---+-------------+---+ <-- 0.1606 TCR
| |
|---------------------------|
|---------------------------------|
|---------------------------------------|
+---------------------------------------------+
| |
| |
+-+---------------------------------------------+-+
+-----------------+-------------+-----------------+ <-- 0.0320 BCR
| |
| |
+------x------+ <-- 0.0000 BPA=ARP
(5/8' thread might
differ from BPA!)
<-- 0.3802 -->
ARP: antenna reference point
BCR: bottom of chokering
BPA: bottom of preamplifier
TCR: top of chokering
