NKLG00GAB 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) : REGINA Team Date Prepared : 2022-11-30 Report Type : UPDATE If Update: Previous Site Log : nklg_20220322.log Modified/Added Sections : 3.23, 3.24 1. Site Identification of the GNSS Monument Site Name : N'KOLTANG (GABON) Four Character ID : NKLG Monument Inscription : None IERS DOMES Number : 32809M002 CDP Number : Not Monument Description : STEEL MAST Height of the Monument : 3 m Monument Foundation : CONCRETE BLOCK (1M BY 1M) Foundation Depth : Marker Description : DOMED BRASS NAIL Date Installed : 2000-02-10T00:00Z Geologic Characteristic : Bedrock Type : Bedrock Condition : Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : (multiple lines) : Antenna supported by a 30 CM SIDED : VERY RIGID STEEL MAST, 3M HIGH 2. Site Location Information City or Town : Libreville State or Province : Country : Gabon Tectonic Plate : AFRICAN Approximate Position (ITRF) X coordinate (m) : 6287385.753 Y coordinate (m) : 1071574.642 Z coordinate (m) : 39133.001 Latitude (N is +) : +002114.06 Longitude (E is +) : +0094019.65 Elevation (m,ellips.) : 31.5 Additional Information : coordinates IGS2020 : Station located in Ariane tracking station : premises 3. GNSS Receiver Information 3.1 Receiver Type : TRIMBLE 4000SSI Satellite System : GPS Serial Number : 3919A25765 Firmware Version : 7.29 Elevation Cutoff Setting : Date Installed : 2000-02-10T00:00Z Date Removed : 2008-01-24T10:00Z Temperature Stabiliz. : Additional Information : 3.2 Receiver Type : TRIMBLE 4000SSI Satellite System : GPS Serial Number : 3919A25765 Firmware Version : 7.29 Elevation Cutoff Setting : 03 deg Date Installed : 2008-01-24T10:02Z Date Removed : 2010-05-03T11:30Z Temperature Stabiliz. : Additional Information : 3.3 Receiver Type : TRIMBLE NETR5 Satellite System : GPS+GLO Serial Number : 4819K55803 Firmware Version : 4.03 Elevation Cutoff Setting : 03 deg Date Installed : 2010-05-05T16:00Z Date Removed : 2010-10-26T08:00Z Temperature Stabiliz. : Additional Information : 3.4 Receiver Type : TRIMBLE NETR5 Satellite System : GPS+GLO Serial Number : 4819K55803 Firmware Version : 4.17 Elevation Cutoff Setting : 03 deg Date Installed : 2010-10-26T08:15Z Date Removed : 2011-05-26T12:00Z Temperature Stabiliz. : Additional Information : 3.5 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO Serial Number : 5038K70406 Firmware Version : 4.22 Elevation Cutoff Setting : 03 deg Date Installed : 2011-05-26T12:30Z Date Removed : 2011-10-13T09:30Z Temperature Stabiliz. : Additional Information : 3.6 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO Serial Number : 5038K70406 Firmware Version : 4.42 Elevation Cutoff Setting : 03 deg Date Installed : 2011-10-13T09:30Z Date Removed : 2012-06-08T14:00Z Temperature Stabiliz. : Additional Information : 3.7 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+SBAS Serial Number : 5038K70406 Firmware Version : 4.60 Elevation Cutoff Setting : 03 deg Date Installed : 2012-06-08T14:00Z Date Removed : 2014-01-29T07:00Z Temperature Stabiliz. : Additional Information : 3.8 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 5038K70406 Firmware Version : 4.81 Elevation Cutoff Setting : 03 deg Date Installed : 2014-01-29T07:10Z Date Removed : 2014-03-05T08:25Z Temperature Stabiliz. : Additional Information : 3.9 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 5038K70406 Firmware Version : 4.85 Elevation Cutoff Setting : 03 deg Date Installed : 2014-03-05T08:30Z Date Removed : 2015-06-18T07:25Z Temperature Stabiliz. : Additional Information : 3.10 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 5038K70406 Firmware Version : 5.01 Elevation Cutoff Setting : 3 deg Date Installed : 2015-06-18T07:35Z Date Removed : 2015-10-21T09:00Z Temperature Stabiliz. : Additional Information : 3.11 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 5038K70406 Firmware Version : 5.01 Elevation Cutoff Setting : 0 deg Date Installed : 2015-10-21T09:01Z Date Removed : 2016-03-31T07:50Z Temperature Stabiliz. : Additional Information : 3.12 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 5038K70406 Firmware Version : 5.10 Elevation Cutoff Setting : 0 deg Date Installed : 2016-03-31T08:00Z Date Removed : 2016-08-10T08:51Z Temperature Stabiliz. : Additional Information : 3.13 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 5038K70406 Firmware Version : 5.14 Elevation Cutoff Setting : 0 deg Date Installed : 2016-08-10T09:00Z Date Removed : 2016-12-15T16:01Z Temperature Stabiliz. : Additional Information : 3.14 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 5038K70406 Firmware Version : 5.15 Elevation Cutoff Setting : 0 deg Date Installed : 2016-12-15T16:07Z Date Removed : 2017-05-23T09:05Z Temperature Stabiliz. : Additional Information : 3.15 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 5217K84495 Firmware Version : 5.20 Elevation Cutoff Setting : 0 deg Date Installed : 2017-05-23T09:15Z Date Removed : 2017-07-31T12:11Z Temperature Stabiliz. : 23.5 +/- 1.5 Additional Information : 3.16 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 5217K84495 Firmware Version : 5.22 Elevation Cutoff Setting : 0 deg Date Installed : 2017-07-31T12:17Z Date Removed : 2018-02-20T10:02Z Temperature Stabiliz. : 23.5 +/- 1.5 Additional Information : 3.17 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 5217K84495 Firmware Version : 5.30 Elevation Cutoff Setting : 0 deg Date Installed : 2018-02-20T10:15Z Date Removed : 2018-08-03T13:45Z Temperature Stabiliz. : 23.5 +/- 1.5 Additional Information : 3.18 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 5217K84495 Firmware Version : 5.33 Elevation Cutoff Setting : 0 deg Date Installed : 2018-08-03T13:51Z Date Removed : 2019-01-30T15:22Z Temperature Stabiliz. : 23.5 +/- 1.5 Additional Information : 3.19 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 5217K84495 Firmware Version : 5.37 Elevation Cutoff Setting : 0 deg Date Installed : 2019-01-30T15:30Z Date Removed : 2019-08-21T10:15Z Temperature Stabiliz. : 23.5 +/- 1.5 Additional Information : 3.20 Receiver Type : SEPT POLARX5 Satellite System : GPS+GLO+GAL+BDS+SBAS+IRNSS Serial Number : 17323022492 Firmware Version : 5.2.0 Elevation Cutoff Setting : 0 deg Date Installed : 2019-08-21T10:15Z Date Removed : 2019-10-22T13:21Z Temperature Stabiliz. : 23.5 +/- 1.5 Additional Information : 3.21 Receiver Type : SEPT POLARX5 Satellite System : GPS+GLO+GAL+BDS+SBAS+IRNSS Serial Number : 17323022492 Firmware Version : 5.3.0 Elevation Cutoff Setting : 0 deg Date Installed : 2019-10-22T13:27Z Date Removed : 2020-02-13T14:11Z Temperature Stabiliz. : 23.5 +/- 1.5 Additional Information : 3.22 Receiver Type : SEPT POLARX5 Satellite System : GPS+GLO+GAL+BDS+SBAS+IRNSS Serial Number : 17323022492 Firmware Version : 5.3.2 Elevation Cutoff Setting : 0 deg Date Installed : 2020-02-13T14:14Z Date Removed : 2021-01-26T10:02Z Temperature Stabiliz. : 23.5 +/- 1.5 Additional Information : 3.23 Receiver Type : SEPT POLARX5 Satellite System : GPS+GLO+GAL+BDS+SBAS+IRNSS Serial Number : 3022492 Firmware Version : 5.4.0 Elevation Cutoff Setting : 0 deg Date Installed : 2021-01-26T10:10Z Date Removed : 2022-11-30T14:02Z Temperature Stabiliz. : 23.5 +/- 1.5 Additional Information : 3.24 Receiver Type : SEPT POLARX5 Satellite System : GPS+GLO+GAL+BDS+SBAS+IRNSS Serial Number : 3022492 Firmware Version : 5.5.0 Elevation Cutoff Setting : 0 deg Date Installed : 2022-11-30T14:05Z Date Removed : CCYY-MM-DDThh:mmZ Temperature Stabiliz. : 23.5 +/- 1.5 Additional Information : 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 : TRM29659.00 NONE Serial Number : 0220160506 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 003.1090 Marker->ARP North Ecc(m) : 000.0000 Marker->ARP East Ecc(m) : 000.0000 Alignment from True N : Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : Antenna Cable Length : 60 m Date Installed : 2000-02-10T00:00Z Date Removed : 2010-05-03T11:30Z Additional Information : 4.2 Antenna Type : TRM59800.00 SCIS Serial Number : 4811A48439 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 003.043 Marker->ARP North Ecc(m) : -00.0015 Marker->ARP East Ecc(m) : -00.0025 Alignment from True N : 0 deg Antenna Radome Type : SCIS Radome Serial Number : 0281 Antenna Cable Type : TRIMBLE Antenna Cable Length : 30 m Date Installed : 2010-05-05T16:00Z Date Removed : 2013-03-29T11:30Z Additional Information : 4.3 Antenna Type : TRM59800.00 SCIS Serial Number : 4811A48439 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 3.0430 Marker->ARP North Ecc(m) : -0.0015 Marker->ARP East Ecc(m) : -0.0025 Alignment from True N : 0 deg Antenna Radome Type : SCIS Radome Serial Number : 0281 Antenna Cable Type : TRIMBLE Antenna Cable Length : 30 m Date Installed : 2013-03-29T11:40Z Date Removed : CCYY-MM-DDThh:mmZ Additional Information : 30m cable + antenna splitter PNS12 ref A28557 : + 1m TRIMBLE cable ref TNC N 58957-02 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 : DORIS antenna ref. pt. (LIBA) Tied Marker Usage : Tied Marker CDP Number : Tied Marker DOMES Number : 32809S002 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 2.745 dy (m) : -0.155 dz (m) : 14.392 Accuracy (mm) : 2 mm Survey method : GPS CAMPAIGN/TRIANGULATION Date Measured : 1999-02-01T00:00Z Additional Information : Survey by IGN-FRANCE : Exact date in Feb 1999 not known 5.2 Tied Marker Name : DORIS antenna ref. pt. (LIBB) Tied Marker Usage : Tied Marker CDP Number : Tied Marker DOMES Number : 32809S003 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 2.994 dy (m) : -0.105 dz (m) : 14.392 Accuracy (mm) : 2 mm Survey method : GPS CAMPAIGN Date Measured : 2005-11-29T00:00Z Additional Information : Survey by IGN-FRANCE : Exact date in nov 2005 not known : between 11-29 to 11-31 5.3 Tied Marker Name : DORIS antenna ref. pt. (LICB) Tied Marker Usage : Tied Marker CDP Number : Tied Marker DOMES Number : 32809S004 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 1.892 dy (m) : 2.034 dz (m) : 10.527 Accuracy (mm) : 2 mm Survey method : GPS CAMPAIGN Date Measured : 2005-12-01T00:00Z Additional Information : Survey by IGN-FRANCE : Exact date in nov 2005 not known : between 11-30 to 12-02 5.4 Tied Marker Name : DORIS antenna ref. pt. (LICB) Tied Marker Usage : Tied Marker CDP Number : Tied Marker DOMES Number : 32809S004 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 1.889 dy (m) : 2.032 dz (m) : 10.524 Accuracy (mm) : 2 mm Survey method : GPS CAMPAIGN Date Measured : 2010-05-05T00:00Z Additional Information : Survey by IGN-FRANCE 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 Input Frequency : 10 MHz Effective Dates : 2000-07-17/2010-05-03 Notes : 6.2 Standard Type : INTERNAL Input Frequency : Effective Dates : 2010-05-05/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 : DORIS Status : PERMANENT Effective Dates : 1998-01-10/CCYY-MM-DD 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.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 : Centre National d'Etudes Spatiales Preferred Abbreviation : CNES Mailing Address : CG/SDO/AM TLM Station ARIANE Libreville : BP 3943 LIBREVILLE GABON Primary Contact Contact Name : REGINA Team Telephone (primary) : Telephone (secondary) : Fax : E-mail : regina.operation@cnes.fr Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : 12. Responsible Agency (if different from 11.) Agency : Centre National d'Etudes Spatiales Preferred Abbreviation : CNES Mailing Address : CNES - 18, avenue Edouard Belin : 31401 Toulouse cedex 09 - France Primary Contact Contact Name : REGINA Team Telephone (primary) : Telephone (secondary) : Fax : E-mail : regina.operation@cnes.fr Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : NKLG is operated jointly by CNES and IGN : Website : https://regina.cnes.fr 13. More Information Primary Data Center : IGN Secondary Data Center : BKG URL for More Information : Hardcopy on File Site Map : Site Diagram : X Horizon Mask : X Monument Description : (Y) Site Pictures : (Y) Additional Information : Antenna Graphics with Dimensions TRM59800.00 ----- / \ | | +-------------------------------------------------+ <-- 0.1020 TCR | | | | | | | | +-+-------------------------------------------------+-+ <-- 0.0381 +-------------------+-------------+-------------------+ <-- 0.0350 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP <-- 0.3810 -->