OS0G00SWE Site Information Form (site log) International GNSS Service See Instructions at: https://files.igs.org/pub/station/general/sitelog_instr_v2.0.txt 0. Form Prepared by (full name) : Christina Kempe Date Prepared : 2025-11-07 Report Type : UPDATE If Update: Previous Site Log : os0g_20030721.log Modified/Added Sections : 1. Site Identification of the GNSS Monument Site Name : Onsala Nine Character ID : OS0G00SWE Monument Inscription : Onsala 301 IERS DOMES Number : 10402M004 CDP Number : Monument Description : PILLAR Height of the Monument : Monument Foundation : Foundation Depth : Marker Description : Date Installed : 1991-07-01T00:00Z Geologic Characteristic : BEDROCK Bedrock Type : SOLID Bedrock Condition : FRESH Fracture Spacing : over 200 cm Fault zones nearby : Distance/activity : Additional Information : 2. Site Location Information City or Town : Onsala State or Province : Country or Region : SWE Tectonic Plate : EURASIAN Approximate Position (ITRF) X coordinate (m) : 3370658.8318 Y coordinate (m) : 711876.9387 Z coordinate (m) : 5349786.7450 Latitude (N is +) : +572343.07 Longitude (E is +) : +0115531.85 Elevation (m) : 46.5 Additional Information : SWEREF 99 (Swedish realisation of ETRS89). : Swedish west-coast, near Gothenburg. 3. GNSS Receiver Information 3.1 Receiver Type : ASHTECH Z18 Satellite System : GPS+GLO Serial Number : ZX00114 Firmware Version : 0060 Elevation Cutoff Setting : Date Installed : 1998-10-21T00:00Z Date Removed : 1999-12-14T00:00Z Temperature Stabiliz. : 25 +/- 3 C Additional Information : See 10.1 3.2 Receiver Type : JPS LEGACY Satellite System : GPS+GLO Serial Number : MT301613113 Firmware Version : 1.9 Aug,31,1999 pl6 Elevation Cutoff Setting : 5 deg Date Installed : 1999-12-14T00:00Z Date Removed : 2003-06-24T00:00Z Temperature Stabiliz. : 25 +/- 3 C Additional Information : (multiple lines) : (multiple lines) 3.3 Receiver Type : JPS LEGACY Satellite System : GPS+GLO Serial Number : MT301613113 Firmware Version : 2.3 May,13,2003 p1 Elevation Cutoff Setting : 5 deg Date Installed : 2003-06-24T00:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : 25 +/- 3 C Additional Information : Firmware upgrade. 3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions) Satellite System : (GPS+GLO+GAL+BDS+QZSS+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 : AOAD/M_B DUTD Serial Number : 20 Antenna Reference Point : BCR Marker->ARP Up Ecc. (m) : 0.9950 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : Antenna Radome Type : DUTD Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 1991-07-01T00:00Z Date Removed : 1999-02-01T00:00Z Additional Information : 4.2 Antenna Type : AOAD/M_B OSOD Serial Number : 020 Antenna Reference Point : BCR Marker->ARP Up Ecc. (m) : 0.9950 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : Antenna Radome Type : OSOD Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 1999-02-02T00:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : 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 : ONSALA 131 Tied Marker Usage : Tied Marker CDP Number : 7213 Tied Marker DOMES Number : 10402S002 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : -52.631 dy (m) : 40.464 dz (m) : 43.865 Accuracy (mm) : 1 Survey method : Date Measured : 1993-04-15T00:00Z Additional Information : Differential coordinates from the GPS : monument to the reference and other : monuments. : The components are parallel to the : XYZ-axes of the global geocentric : reference system ITRF (WGS-84). 5.2 Tied Marker Name : ONSALA 501 Tied Marker Usage : Tied Marker CDP Number : 7211 Tied Marker DOMES Number : 10402M006 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : -16.704 dy (m) : -10.902 dz (m) : 9.290 Accuracy (mm) : 1 Survey method : Date Measured : 1993-04-15T00:00Z Additional Information : Differential coordinates from the GPS : monument to the reference and other : monuments. : The components are parallel to the : XYZ-axes of the global geocentric : reference system ITRF (WGS-84). 5.3 Tied Marker Name : ONSALA 301 Tied Marker Usage : Tied Marker CDP Number : 20 Tied Marker DOMES Number : 10402M004 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 0.000 dy (m) : 0.000 dz (m) : 0.000 Accuracy (mm) : Survey method : Date Measured : (CCYY-MM-DDThh:mmZ) Additional Information : Same monument, pillar and antenna as : the Onsala IGS station ONSA. 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 : EXTERNAL H2-MASER Input Frequency : 5.0 MHz Effective Dates : 1998-11-11/CCYY-MM-DD Notes : 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 : VLBI Status : PERMANENT Effective Dates : 1980-01-01/CCYY-MM-DD Notes : Also Mobile VLBI, Gravim 7.2 Instrumentation Type : GPS Status : PERMANENT Effective Dates : 1993-07-01/CCYY-MM-DD Notes : ONSALA IGS station. 7.3 Instrumentation Type : GRAVITY Status : MOBILE Effective Dates : 1995-09-26/1995-09-27 Notes : 7.4 Instrumentation Type : GRAVITY Status : MOBILE Effective Dates : 1995-09-29/1995-10-01 Notes : 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 8.1.1 Humidity Sensor Model : HMP HUMICAP H-sensor Manufacturer : VAISALA Serial Number : Data Sampling Interval : 1800 sec Accuracy (% rel h) : 2 Aspiration : Height Diff to Ant : Calibration date : Effective Dates : 1997-04-01/CCYY-MM-DD Notes : 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) 8.2.1 Pressure Sensor Model : Setra 361B Manufacturer : Setra Systems Serial Number : Data Sampling Interval : 1800 sec Accuracy : 0.5 hPa Height Diff to Ant : 0.0 m Calibration date : Effective Dates : 1991-07-01/CCYY-MM-DD Notes : 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) 8.3.1 Temp. Sensor Model : HMP35D pt-100 Manufacturer : VAISALA Serial Number : Data Sampling Interval : 1800 sec Accuracy : 0.1 deg C Aspiration : Height Diff to Ant : Calibration date : Effective Dates : 1997-04-01/CCYY-MM-DD Notes : 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) 8.4.1 Water Vapor Radiometer : Astrid Manufacturer : Onsala Space Observatory Serial Number : Distance to Antenna : 8.0 m Height Diff to Ant : 0.0 m Calibration date : Effective Dates : 1991-07-01/CCYY-MM-DD Notes : 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 10.1 Date : 1999-01-25/CCYY-MM-DD Event : Firmware upgrade (0057 -> 0060). 10.x Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 11. On-Site, Point of Contact Agency Information Agency : Onsala Space Observatory/Chalmers Preferred Abbreviation : OSO Mailing Address : SE-439 92 Onsala : Sweden Primary Contact Contact Name : Lars Eriksson Telephone (primary) : +46 31 772 5567 Telephone (secondary) : +46 31 772 5500 Fax : +46 31 772 5590 E-mail : leson@oso.chalmers.se Secondary Contact Contact Name : Jan Johansson Telephone (primary) : +46 31 772 55 58 Telephone (secondary) : +46 33 16 55 04 Fax : +46 33 12 50 38 E-mail : jan.johansson@sp.se Additional Information : 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 : Secondary Data Center : URL for More Information : Hardcopy on File Site Map : Y Site Diagram : Y Horizon Mask : Y Monument Description : Y Site Pictures : Y Additional Information : (multiple lines) : (multiple lines) Antenna Graphics with Dimensions AOAD/M_T ----- / + \ <-- 0.128 L2 | + | <-- 0.110 L1 +--------------------------------------------------+ <-- 0.102 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.038 +-------------------+-------------+--------------------+ <-- 0.035 BCR | | =| | +------x------+ <-- 0.000 BPA=ARP <-- 0.381 -->