NTUS00SGP Site Information Form (site log) International GNSS Service See Instructions at: https://ftp.igs.org/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Neil Ashcroft Date Prepared : 2018-04-18 Report Type : UPDATE If Update: Previous Site Log : ntus_20170424.log Modified/Added Sections : 3.11, 3.12, 4.3, 4.4 1. Site Identification of the GNSS Monument Site Name : Nanyang Technological University Four Character ID : NTUS Monument Inscription : NTUS-01 IERS DOMES Number : 22601M001 CDP Number : not Monument Description : PILLAR Height of the Monument : 1.50 m Monument Foundation : ROOF Foundation Depth : Marker Description : TRIBRACH Date Installed : 1997-06-26T03:00Z Geologic Characteristic : Bedrock Type : Bedrock Condition : Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : The NTUS station is operated jointly for IGS by : Singapore Land Authority (SLA) and the : Delft University of Technology (DUT/DEOS). 2. Site Location Information City or Town : Singapore State or Province : Country : Singapore Tectonic Plate : EURASIAN Approximate Position (ITRF) X coordinate (m) : -1508022 Y coordinate (m) : 6195580 Z coordinate (m) : 148800 Latitude (N is +) : +012044.88 Longitude (E is +) : +1034047.64 Elevation (m,ellips.) : 79.0 Additional Information : 3. GNSS Receiver Information 3.1 Receiver Type : ROGUE SNR-8000 Satellite System : GPS Serial Number : T175 Firmware Version : 3.2.32.1 Elevation Cutoff Setting : 0 deg Date Installed : 1997-06-26T03:00Z Date Removed : 1999-09-02T00:00Z Temperature Stabiliz. : none Additional Information : 3.2 Receiver Type : AOA SNR-12 ACT Satellite System : GPS Serial Number : 229 Firmware Version : 3.3.32.3 Elevation Cutoff Setting : 0 deg Date Installed : 1999-10-28T06:00Z Date Removed : 2000-10-20T00:00Z Temperature Stabiliz. : none Additional Information : 3.3 Receiver Type : AOA SNR-12 ACT Satellite System : GPS Serial Number : 224 Firmware Version : 3.3.32.3 Elevation Cutoff Setting : 0 deg Date Installed : 2001-02-22T05:20Z Date Removed : 2001-03-11T00:00Z Temperature Stabiliz. : none Additional Information : 3.4 Receiver Type : AOA SNR-12 ACT Satellite System : GPS Serial Number : 225 Firmware Version : 3.3.32.3 Elevation Cutoff Setting : 0 deg Date Installed : 2001-06-18T03:40Z Date Removed : 2006-11-03T00:00Z Temperature Stabiliz. : none Additional Information : 3.5 Receiver Type : LEICA GRX1200GGPRO Satellite System : GPS+GLO Serial Number : 352729 Firmware Version : 5.10/3.013 Elevation Cutoff Setting : 0 deg Date Installed : 2007-06-25T06:00Z Date Removed : 2009-09-03T00:00Z Temperature Stabiliz. : none Additional Information : 3.6 Receiver Type : LEICA GRX1200GGPRO Satellite System : GPS+GLO Serial Number : 352729 Firmware Version : 7.53/3.015 Elevation Cutoff Setting : 0 deg Date Installed : 2009-09-03T00:00Z Date Removed : 2010-04-05T08:30Z Temperature Stabiliz. : none Additional Information : 3.7 Receiver Type : LEICA GRX1200GGPRO Satellite System : GPS+GLO Serial Number : 352729 Firmware Version : 7.80/3.018 Elevation Cutoff Setting : 0 deg Date Installed : 2010-04-05T08:30Z Date Removed : 2010-05-10T06:53Z Temperature Stabiliz. : none Additional Information : 3.8 Receiver Type : LEICA GRX1200GGPRO Satellite System : GPS+GLO Serial Number : 352729 Firmware Version : 7.80/3.019 Elevation Cutoff Setting : 0 deg Date Installed : 2010-05-10T07:04Z Date Removed : 2011-01-25T03:14Z Temperature Stabiliz. : none Additional Information : 3.9 Receiver Type : LEICA GRX1200GGPRO Satellite System : GPS+GLO Serial Number : 352729 Firmware Version : 8.10/3.019 Elevation Cutoff Setting : 0 deg Date Installed : 2011-01-25T06:28Z Date Removed : 2014-07-27T04:00Z Temperature Stabiliz. : none Additional Information : 3.10 Receiver Type : LEICA GRX1200GGPRO Satellite System : GPS+GLO Serial Number : 352729 Firmware Version : 8.10/3.055 Elevation Cutoff Setting : 0 deg Date Installed : 2014-12-20T09:00Z Date Removed : 2017-04-24T07:50Z Temperature Stabiliz. : none Additional Information : During the period 2015-04-05T04:00Z until : 2016-04-04T13:33Z the receiver was unable to : send data due to connectivity problems. On : 2016-04-04 internet connectivity was restored : by installing a new modem. Between : 2016-05-17T08:00Z and 2017-03-08T09:00Z there : were several hardware issues. On 2017-03-08 : internet connectivity was restored again and : the antenna cable was replaced. Furthermore, : the receiver had issues tracking any satellites : for intervals up to several hours. 3.11 Receiver Type : LEICA GRX1200GGPRO Satellite System : GPS+GLO Serial Number : 352729 Firmware Version : 9.20/3.823 Elevation Cutoff Setting : 0 deg Date Installed : 2017-04-24T08:00Z Date Removed : 2018-04-18T02:35Z Temperature Stabiliz. : none Additional Information : 3.12 Receiver Type : LEICA GR50 Satellite System : GPS+GLO+GAL+BDS+QZSS Serial Number : 1832415 Firmware Version : 4.20/7.300 Elevation Cutoff Setting : 0 deg Date Installed : 2018-04-18T02:50Z Date Removed : CCYY-MM-DDThh:mmZ Temperature Stabiliz. : none Additional Information : The receiver is owned and maintained with : firmware upgrades by Leica Geosystems. 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_T NONE Serial Number : 177 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0776 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 : Antenna Cable Length : 100 m Date Installed : 1997-06-26T03:00Z Date Removed : 1998-05-07T08:00Z Additional Information : The antenna is mounted on a pillar with a : SOKIA Tribrach. The pillar (approx. 1.50m high) : is located on the building of the Survey : Laboratory of the School of Civil & Structural : Engineering of the Nanyang Technological : University at Singapore 4.2 Antenna Type : AOAD/M_T NONE Serial Number : 222 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0776 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 : Antenna Cable Length : 100 m Date Installed : 1998-06-08T00:00Z Date Removed : 2007-05-16T00:00Z Additional Information : The antenna is mounted on a pillar with a : SOKIA Tribrach. The pillar (approx. 1.50m high) : is located on the building of the Survey : Laboratory of the School of Civil & Structural : Engineering of the Nanyang Technological : University at Singapore 4.3 Antenna Type : LEIAT504GG NONE Serial Number : 200240 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0776 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 : Antenna Cable Length : 100 m Date Installed : 2007-05-16T00:00Z Date Removed : 2018-04-18T02:35Z Additional Information : The antenna is mounted on a pillar with a : LEICA GDF 111-1 Tribrach and rotatable Tribrach : approx. 1.50m high) : is located on the building of the Survey : Laboratory of the School of Civil & Structural : Engineering of the Nanyang Technological : University at Singapore 4.4 Antenna Type : LEIAR20 LEIM Serial Number : 20288014 Antenna Reference Point : BAM Marker->ARP Up Ecc. (m) : 0.0776 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : LEIM Radome Serial Number : Antenna Cable Type : Antenna Cable Length : 100 m Date Installed : 2018-04-18T02:50Z Date Removed : CCYY-MM-DDThh:mmZ Additional Information : The antenna is mounted on a pillar with a : LEICA GDF 111-1 Tribrach and rotatable Tribrach : approx. 1.50m high) : is located on the building of the Survey : Laboratory of the School of Civil & Structural : Engineering of the Nanyang Technological : University at Singapore : The antenna is owned by Leica Geosystems 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 : INTERNAL Input Frequency : Effective Dates : 1997-06-26/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.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 : Singapore Land Authority Preferred Abbreviation : SLA Mailing Address : 55 Newton Road, Revenue House : #12-01 : Singapore 307987 : Republic of Singapore Primary Contact Contact Name : Tan Hua Seng Telephone (primary) : +65 64783599 Telephone (secondary) : Fax : +65 63239937 E-mail : TAN_Hua_Seng@sla.gov.sg Secondary Contact Contact Name : Rashid Mohd Noor Telephone (primary) : +65 64783605 Telephone (secondary) : Fax : +65 63239937 E-mail : Rahis_md_Noor@sla.gov.sg Additional Information : 12. Responsible Agency (if different from 11.) Agency : Delft University of Technology Preferred Abbreviation : DUT Mailing Address : Delft University of Technology : Department of Geosciences and Remote Sensing (CITG/GRS) : Stevinweg 1, NL-2628 CN Delft : Netherlands Primary Contact Contact Name : Hans van der Marel Telephone (primary) : +31 15 2784907 Telephone (secondary) : +31 15 2783546 Fax : +31 15 2783711 E-mail : H.vanderMarel@tudelft.nl Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : 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 : Site Diagram : X Horizon Mask : X Monument Description : X Site Pictures : X Additional Information : Antenna Graphics with Dimensions LEIAR20 +-----+ <-- 0.1613 / \ | | +----------------+-----------+----------------+ <-- 0.1113 TCR | | | | | | | | +-+---------------------------------------------+-+ +------------------+-----------+------------------+ <-- 0.0323 BCR | | | | +-----x-----+ <-- 0.0013 BPA +-+ <-- 0.0000 BAM=ARP <-- 0.3200 -->