SHLG Site Information Form (site log) International GNSS Service See Instructions at: ftp://igs.org/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : istrac Date Prepared : 2023-09-18 Report Type : UPDATE If Update: Previous Site Log : (ssss_ccyymmdd.log) Modified/Added Sections : (n.n,n.n,...) 1. Site Identification of the GNSS Monument Site Name : Shillong (Meghalaya, India) Four Character ID : SHLG Monument Inscription : IERS DOMES Number : 22314M001 CDP Number : 2609 Monument Description : PILLAR Height of the Monument : Monument Foundation : CONCRETE Foundation Depth : Marker Description : Center of the SS mount Date Installed : 2021-03-20T00:00Z Geologic Characteristic : Bedrock Type : NOT APPLICABLE Bedrock Condition : NOT APPLICABLE Fracture Spacing : NONE Fault zones nearby : Distance/activity : Additional Information : 1.5m PILLAR on the periphery of the first floor : of the building. Center point at stainless\steel : antenna mount of 150mm height fixed on the : pillar 2. Site Location Information City or Town : Shillong State or Province : Meghalaya Country : India Tectonic Plate : INDIAN Approximate Position (ITRF) X coordinate (m) : -192075.209 Y coordinate (m) : 5749765.124 Z coordinate (m) : 2746987.544 Latitude (N is +) : +254026.22 Longitude (E is +) : +0915447.87 Elevation (m,ellips.) : 1007.2 Additional Information : WGS-84 3. GNSS Receiver Information 3.1 Receiver Type : TRIMBLE ALLOY Satellite System : GPS+GLO+GAL+QZSS+IRNSS+BDS+SBAS Serial Number : 5940R40038 Firmware Version : 5.43 Elevation Cutoff Setting : 5 deg Date Installed : 2021-03-20T00:00Z Date Removed : 2021-06-14T15:00Z Temperature Stabiliz. : none Additional Information : 3.2 Receiver Type : TRIMBLE ALLOY Satellite System : GPS+QZSS+GLO+GAL+IRNSS+BDS+SBAS Serial Number : 5940R40038 Firmware Version : 5.45 Elevation Cutoff Setting : 5 deg Date Installed : 2021-06-14T15:05Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : none 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 : LEIAR25.R3 NONE Serial Number : 10040008 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 000.1500 Marker->ARP North Ecc(m) : 000.0000 Marker->ARP East Ecc(m) : 000.0000 Alignment from True N : 0 deg Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : LMR400 Antenna Cable Length : Date Installed : 2021-05-21T06:52Z 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.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 : CS 5071A Input Frequency : 10 MHz Effective Dates : 2022-12-20/(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 : ISRO Preferred Abbreviation : Mailing Address : ISTRAC Bangalore 560013 India Primary Contact Contact Name : ISTRAC ISRO Telephone (primary) : +91 80 2809 4583 Telephone (secondary) : Fax : E-mail : isro_igs@istrac.gov.in Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : (multiple lines) 12. Responsible Agency (if different from 11.) Agency : ISTRAC ISRO Preferred Abbreviation : Mailing Address : ISTRAC ISRO Primary Contact Contact Name : ISTRAC ISRO Telephone (primary) : Telephone (secondary) : Fax : E-mail : isro_igs@istrac.gov.in 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 : Site Diagram : Horizon Mask : Monument Description : Site Pictures : Additional Information : Antenna Graphics with Dimensions (insert text graphic from file antenna.gra)