QAQ100GRL Site Information Form (site log)
International GNSS Service
See Instructions at:
https://files.igscb.org/pub/station/general/sitelog_instr.txt
0. Form
Prepared by (full name) : DTU Space GNSS Team
Date Prepared : 2023-01-10
Report Type : UPDATE
If Update:
Previous Site Log : qaq100grl_20220909.log
Modified/Added Sections : 3.22, 3.23
1. Site Identification of the GNSS Monument
Site Name : Qaqortoq
Four Character ID : QAQ1
Monument Inscription :
IERS DOMES Number : 43007M001
CDP Number : (A4)
Monument Description : 2.5 meter concrete pillar with brass nail
Height of the Monument : (m)
Monument Foundation : (STEEL RODS, CONCRETE BLOCK, ROOF, etc)
Foundation Depth : (m)
Marker Description : (CHISELLED CROSS/DIVOT/BRASS NAIL/etc)
Date Installed : 2001-10-15T00:00Z
Geologic Characteristic : BEDROCK
Bedrock Type : METAMORPHIC
Bedrock Condition : JOINTED
Fracture Spacing : over 200 cm
Fault zones nearby : (YES/NO/Name of the zone)
Distance/activity : (multiple lines)
Additional Information : 2002-08-20 Format issues, antenna eccentricity,
: elevation cutoff setting and datacenter
: information has been corrected/added.
2. Site Location Information
City or Town : Qaqortoq / Julianehaab
State or Province : Greenland
Country : Greenland
Tectonic Plate : NORTH AMERICAN
Approximate Position (ITRF)
X coordinate (m) : 2170942.180
Y coordinate (m) : -2251829.950
Z coordinate (m) : 5539988.290
Latitude (N is +) : +604254.95
Longitude (E is +) : -0460251.94
Elevation (m,ellips.) : 110.4
Additional Information : Position origins from one week processing
: (GPS week 1136)
3. GNSS Receiver Information
3.1 Receiver Type : ASHTECH UZ-12
Satellite System : GPS
Serial Number : ZR20012301
Firmware Version : CJ00
Elevation Cutoff Setting : 5 deg
Date Installed : 2001-10-15T00:00Z
Date Removed : 2005-08-01T19:00Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.2 Receiver Type : ASHTECH Z-XII3
Satellite System : GPS
Serial Number : 02259
Firmware Version : 1L00
Elevation Cutoff Setting : 5 deg
Date Installed : 2005-08-01T19:07Z
Date Removed : 2006-02-23T13:59Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.3 Receiver Type : ASHTECH UZ-12
Satellite System : GPS
Serial Number : ZR20012301
Firmware Version : CJ00
Elevation Cutoff Setting : 5 deg
Date Installed : 2006-02-23T14:00Z
Date Removed : 2014-10-05T18:59Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.4 Receiver Type : JAVAD TRE_G3T SIGMA
Satellite System : GPS+GLO
Serial Number : 00813
Firmware Version : 3.5.1 Mar,04,2013
Elevation Cutoff Setting : 0 deg
Date Installed : 2014-10-05T20:00Z
Date Removed : 2015-04-23T11:08Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.5 Receiver Type : JAVAD TRE_G3T SIGMA
Satellite System : GPS+GLO
Serial Number : 00813
Firmware Version : 3.5.9 Apr,21,2015
Elevation Cutoff Setting : 0 deg
Date Installed : 2015-04-23T11:08Z
Date Removed : 2015-10-08T12:10Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.6 Receiver Type : JAVAD TRE_G3T SIGMA
Satellite System : GPS+GLO+SBAS
Serial Number : 00813
Firmware Version : 3.5.9 Apr,21,2015
Elevation Cutoff Setting : 0 deg
Date Installed : 2015-10-08T12:10Z
Date Removed : 2015-11-13T10:31Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.7 Receiver Type : JAVAD TRE_G3T SIGMA
Satellite System : GPS+GLO+SBAS
Serial Number : 00813
Firmware Version : 3.5.12 Nov,12,2015
Elevation Cutoff Setting : 0 deg
Date Installed : 2015-11-13T10:31Z
Date Removed : 2016-06-02T13:05Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.8 Receiver Type : JAVAD TRE_G3T SIGMA
Satellite System : GPS+GLO+SBAS
Serial Number : 00813
Firmware Version : 3.5.13 May,18,2016
Elevation Cutoff Setting : 0 deg
Date Installed : 2016-06-02T13:05Z
Date Removed : 2016-09-26T12:08Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.9 Receiver Type : JAVAD TRE_G3T SIGMA
Satellite System : GPS+GLO+SBAS
Serial Number : 00813
Firmware Version : 3.5.14 Sep,22,2016
Elevation Cutoff Setting : 0 deg
Date Installed : 2016-09-26T12:12Z
Date Removed : 2017-03-07T11:00Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.10 Receiver Type : JAVAD TRE_G3T SIGMA
Satellite System : GPS+GLO+SBAS
Serial Number : 00813
Firmware Version : 3.6.9 Nov,28,2016
Elevation Cutoff Setting : 0 deg
Date Installed : 2017-03-07T11:00Z
Date Removed : 2017-06-22T11:00Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.11 Receiver Type : JAVAD TRE_G3T SIGMA
Satellite System : GPS+GLO
Serial Number : 00813
Firmware Version : 3.6.9 Nov,28,2016
Elevation Cutoff Setting : 0 deg
Date Installed : 2017-06-22T11:00Z
Date Removed : 2017-08-14T11:20Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.12 Receiver Type : JAVAD TRE_G3T SIGMA
Satellite System : GPS+GLO+SBAS
Serial Number : 00813
Firmware Version : 3.6.9 Nov,28,2016
Elevation Cutoff Setting : 0 deg
Date Installed : 2017-08-14T11:22Z
Date Removed : 2018-11-05T10:00Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.13 Receiver Type : JAVAD TRE_G3T SIGMA
Satellite System : GPS+GLO+SBAS
Serial Number : 00813
Firmware Version : 3.6.13 Feb,12,2018
Elevation Cutoff Setting : 0 deg
Date Installed : 2018-11-05T14:10Z
Date Removed : 2019-06-21T11:00Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.14 Receiver Type : SEPT POLARX5S
Satellite System : GPS+GLO+GAL+SBAS
Serial Number : 3048404
Firmware Version : 5.2.0
Elevation Cutoff Setting : 0 deg
Date Installed : 2019-06-21T12:00Z
Date Removed : 2019-09-26T09:30Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.15 Receiver Type : SEPT POLARX5S
Satellite System : GPS+GLO+GAL+SBAS
Serial Number : 3048404
Firmware Version : 5.3.0
Elevation Cutoff Setting : 0 deg
Date Installed : 2019-09-26T09:35Z
Date Removed : 2019-10-24T11:21Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.16 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO+GAL+SBAS
Serial Number : 3023005
Firmware Version : 5.3.0
Elevation Cutoff Setting : 0 deg
Date Installed : 2019-10-24T12:00Z
Date Removed : 2020-02-05T08:40Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.17 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO+GAL+SBAS
Serial Number : 3023005
Firmware Version : 5.3.2
Elevation Cutoff Setting : 0 deg
Date Installed : 2020-02-05T08:45Z
Date Removed : 2020-06-08T23:59Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.18 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO+GAL+BDS+QZSS+SBAS
Serial Number : 3023005
Firmware Version : 5.3.2
Elevation Cutoff Setting : 0 deg
Date Installed : 2020-06-09T00:00Z
Date Removed : 2020-10-06T08:30Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.19 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 3023005
Firmware Version : 5.3.2
Elevation Cutoff Setting : 0 deg
Date Installed : 2020-10-06T08:30Z
Date Removed : 2021-01-13T16:45Z
Temperature Stabiliz. : (deg C) +/- (deg C)
Additional Information : (multiple lines)
3.20 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 3023005
Firmware Version : 5.4.0
Elevation Cutoff Setting : 0 deg
Date Installed : 2021-01-13T16:45Z
Date Removed : 2021-07-26T23:24Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.21 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 3023005
Firmware Version : 5.4.0-patch1
Elevation Cutoff Setting : 0 deg
Date Installed : 2021-07-26T23:24Z
Date Removed : 2022-09-09T09:55Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.22 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 3023005
Firmware Version : 5.5.0
Elevation Cutoff Setting : 0 deg
Date Installed : 2022-09-09T09:55Z
Date Removed : 2023-01-10T17:25Z
Temperature Stabiliz. : none
Additional Information : (multiple lines)
3.23 Receiver Type : SEPT POLARX5
Satellite System : GPS+GLO+GAL+BDS
Serial Number : 3023005
Firmware Version : 5.5.0
Elevation Cutoff Setting : 0 deg
Date Installed : 2023-01-10T17:25Z
Date Removed : CCYY-MM-DDThh:mmZ
Temperature Stabiliz. : none
Additional Information : QZSS SVs not in view
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 : ASH701941.B SCIS
Serial Number : 13301
Antenna Reference Point : BPA
Marker->ARP Up Ecc. (m) : 0.1206
Marker->ARP North Ecc(m) : 0.0000
Marker->ARP East Ecc(m) : 0.0000
Alignment from True N : 0 deg
Antenna Radome Type : SCIS
Radome Serial Number :
Antenna Cable Type : Andrew LDF4-50A
Antenna Cable Length : 55 m
Date Installed : 2001-10-15T00:00Z
Date Removed : 2003-08-26T14:12Z
Additional Information : (multiple lines)
4.2 Antenna Type : ASH701941.B NONE
Serial Number : 13301
Antenna Reference Point : BPA
Marker->ARP Up Ecc. (m) : 0.1206
Marker->ARP North Ecc(m) : 0.0000
Marker->ARP East Ecc(m) : 0.0000
Alignment from True N : 0 deg
Antenna Radome Type : NONE
Radome Serial Number :
Antenna Cable Type : Andrew LDF4-50A
Antenna Cable Length : 55 m
Date Installed : 2003-09-05T12:00Z
Date Removed : 2003-09-29T11:20Z
Additional Information : (multiple lines)
4.3 Antenna Type : ASH701941.B SCIS
Serial Number : 13301
Antenna Reference Point : BPA
Marker->ARP Up Ecc. (m) : 0.1206
Marker->ARP North Ecc(m) : 0.0000
Marker->ARP East Ecc(m) : 0.0000
Alignment from True N : 0 deg
Antenna Radome Type : SCIS
Radome Serial Number :
Antenna Cable Type : Andrew LDF4-50A
Antenna Cable Length : 55 m
Date Installed : 2003-09-29T11:21Z
Date Removed : 2003-12-30T17:08Z
Additional Information : (multiple lines)
4.4 Antenna Type : ASH701945E_M SCIS
Serial Number : 24206
Antenna Reference Point : BPA
Marker->ARP Up Ecc. (m) : 0.1206
Marker->ARP North Ecc(m) : 0.0000
Marker->ARP East Ecc(m) : 0.0000
Alignment from True N : 0 deg
Antenna Radome Type : SCIS
Radome Serial Number :
Antenna Cable Type : Andrew LDF4-50A
Antenna Cable Length : 55 m
Date Installed : 2003-12-30T17:09Z
Date Removed : CCYY-MM-DDThh:mmZ
Additional Information : (multiple lines)
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.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 RUBIDIUM
Input Frequency : 5 MHz
Effective Dates : 2001-11-11/2005-09-04
Notes : DATUM EFRATOM FRK-LLN S/N 18676
6.2 Standard Type : INTERNAL
Input Frequency : (if external)
Effective Dates : 2005-09-05/2006-01-11
Notes : receiver not locked to external frequency
6.3 Standard Type : EXTERNAL RUBIDIUM
Input Frequency : 5 MHz
Effective Dates : 2006-01-11/2019-06-21
Notes : DATUM EFRATOM FRK-LLN S/N 18676
6.4 Standard Type : INTERNAL
Input Frequency : (if external)
Effective Dates : 2019-06-21/CCYY-MM-DD
Notes : NONE
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.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 : HMP45D
Manufacturer : VAISALA
Serial Number :
Data Sampling Interval : 300 sec
Accuracy (% rel h) : 2 % rel h
Aspiration : (UNASPIRATED/NATURAL/FAN/etc)
Height Diff to Ant : 5.578 m
Calibration date : (CCYY-MM-DD)
Effective Dates : 2001-11-15/2019-06-21
Notes : Serial U5020002
8.1.2 Humidity Sensor Model : HUMICAP180
Manufacturer : VAISALA
Serial Number :
Data Sampling Interval : 300 sec
Accuracy (% rel h) : 1 % rel h
Aspiration : (UNASPIRATED/NATURAL/FAN/etc)
Height Diff to Ant : 5.578 m
Calibration date : 2018-12-01
Effective Dates : 2019-06-21/CCYY-MM-DD
Notes : Serial P5240847
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 : PTU200 Class A
Manufacturer : VAISALA
Serial Number :
Data Sampling Interval : 300 sec
Accuracy : 0.15 hPa
Height Diff to Ant : 5.578 m
Calibration date : (CCYY-MM-DD)
Effective Dates : 2001-11-15/2019-06-21
Notes : Serial U5120002
8.2.2 Pressure Sensor Model : PTU303
Manufacturer : VAISALA
Serial Number :
Data Sampling Interval : 300 sec
Accuracy : 0.3 hPa
Height Diff to Ant : 5.578 m
Calibration date : 2018-12-01
Effective Dates : 2019-06-21/CCYY-MM-DD
Notes : Serial P5240847
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 : PTU200
Manufacturer : VAISALA
Serial Number :
Data Sampling Interval : 300 sec
Accuracy : 0.2 deg C
Aspiration : (UNASPIRATED/NATURAL/FAN/etc)
Height Diff to Ant : 5.578 m
Calibration date : (CCYY-MM-DD)
Effective Dates : 2001-11-15/2019-06-21
Notes : Serial U5120002
8.3.2 Temp. Sensor Model : PTU303
Manufacturer : VAISALA
Serial Number :
Data Sampling Interval : 300 sec
Accuracy : 0.2 deg C
Aspiration : (UNASPIRATED/NATURAL/FAN/etc)
Height Diff to Ant : 5.578 m
Calibration date : 2018-12-01
Effective Dates : 2019-06-21/CCYY-MM-DD
Notes : Serial P5240847
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 : National Space Institute
: Technical University of Denmark
Preferred Abbreviation : DTU Space
Mailing Address : Elektrovej bldg. 328
: DK-2800 Kongens Lyngby
: Denmark
Primary Contact
Contact Name : DTU Space GNSS Team
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail : dtuspace-gnss@space.dtu.dk
Secondary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Additional Information : (multiple lines)
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 : CDDIS
Secondary Data Center : BKG
URL for More Information :
Hardcopy on File
Site Map : (Y or URL)
Site Diagram : (Y)
Horizon Mask : (Y)
Monument Description : (Y)
Site Pictures : (Y)
Additional Information : (multiple lines)
Antenna Graphics with Dimensions
ASH701945B_M
ASH701945C_M
ASH701945D_M
ASH701945E_M
+-------+
/ + \ <-- 0.1280 L2
| + | <-- 0.1100 L1
+-----------------+-------------+------------------+ <-- 0.1006 TCR
| |
| |
| |
| |
+-+--------------------------------------------------+-+ <-- 0.0376
+-------------------+-------------+--------------------+ <-- 0.0346 BCR
| |
| |
+------x------+ <-- 0.0000 BPA=ARP
<-- 0.3794 -->
