LERI 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) : Colin Fane Date Prepared : 2020-08-21 Report Type : UPDATE If Update: Previous Site Log : leri_20200226.log Modified/Added Sections : 11 1. Site Identification of the GNSS Monument Site Name : Lerwick Four Character ID : LERI Monument Inscription : IERS DOMES Number : 19159M003 CDP Number : (A4) Monument Description : Stainless steel pin Height of the Monument : 0.1 m Monument Foundation : Bedrock Foundation Depth : 0.4 m Marker Description : Centre of mount thread/top of height marker bolt Date Installed : 2009-06-16 Geologic Characteristic : BEDROCK Bedrock Type : (IGNEOUS/METAMORPHIC/SEDIMENTARY) Bedrock Condition : (FRESH/JOINTED/WEATHERED) Fracture Spacing : (0 cm/1-10 cm/11-50 cm/51-200 cm/over 200 cm) Fault zones nearby : Unknown Distance/activity : (multiple lines) Additional Information : (multiple lines) 2. Site Location Information City or Town : Lerwick State or Province : Shetland Isles Country : United Kingdom Tectonic Plate : EURASIAN Approximate Position (ITRF) X coordinate (m) : 3183134.000 Y coordinate (m) : -65772.000 Z coordinate (m) : 5508281.000 Latitude (N is +) : +600818.00 Longitude (E is +) : -0011101.37 Elevation (m,ellips.) : 131.4 Additional Information : (multiple lines) 3. GNSS Receiver Information 3.1 Receiver Type : LEICA GRX1200+GNSS Satellite System : GPS+GLO Serial Number : 356514 Firmware Version : 7.50 Elevation Cutoff Setting : 5 deg Date Installed : 2009-06-16T15:00Z Date Removed : 2009-09-11T09:35Z Temperature Stabiliz. : (deg C) +/- (deg C) Additional Information : ME firmware v4.003.S6 3.2 Receiver Type : LEICA GRX1200+GNSS Satellite System : GPS+GLO Serial Number : 356514 Firmware Version : 7.53 Elevation Cutoff Setting : 0 deg Date Installed : 2009-09-11T10:26Z Date Removed : 2011-04-20T08:09Z Temperature Stabiliz. : (deg C) +/- (deg C) Additional Information : ME firmware v4.003.S6 3.3 Receiver Type : LEICA GRX1200+GNSS Satellite System : GPS+GLO Serial Number : 356189 Firmware Version : 7.81 Elevation Cutoff Setting : 0 deg Date Installed : 2011-04-20T08:31Z Date Removed : 2015-06-03T14:51Z Temperature Stabiliz. : (deg C) +/- (deg C) Additional Information : ME firmware v4.005 3.4 Receiver Type : LEICA GRX1200+GNSS Satellite System : GPS+GLO Serial Number : 356189 Firmware Version : 9.20 Elevation Cutoff Setting : 0 deg Date Installed : 2015-06-03T15:23Z Date Removed : CCYY-MM-DDThh:mmZ Temperature Stabiliz. : (deg C) +/- (deg C) Additional Information : ME firmware v6.112 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 : LEIAR25 LEIT Serial Number : 08420018 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.1040 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : LEIT Radome Serial Number : Antenna Cable Type : Huber+Suhner 1/2' Sucofeed Antenna Cable Length : 100 m Date Installed : 2009-06-16T15:00Z Date Removed : CCYY-MM-DDThh:mmZ Additional Information : Antenna has been individually calibrated 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 : (if external) Effective Dates : 2009-06-16/CCYY-MM-DD Notes : (multiple lines) 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 : Ordnance Survey : Geodesy and Positioning Preferred Abbreviation : OS Mailing Address : Adanac Drive : SO16 0AS Southampton : United Kingdom Primary Contact Contact Name : Geodesy and Positioning Telephone (primary) : Telephone (secondary) : Fax : E-mail : GeodeticEnquiries@os.uk 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 : BKG Secondary Data Center : BEV URL for More Information : Hardcopy on File Site Map : (Y or URL) Site Diagram : (Y or URL) Horizon Mask : (Y or URL) Monument Description : (Y or URL) Site Pictures : (Y or URL) Additional Information : (multiple lines) Antenna Graphics with Dimensions LEIAR25 +-------+ <-- 0.1995 / + \ | + | |---+-------------+---| <-- 0.1614 TCR |-----------------------------| |-------------------------------------| |---------------------------------------------| +---------------------------------------------------+ | | | | | | | | +-+---------------------------------------------------+-+ +--------------------+-------------+--------------------+ <-- 0.0320 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP <-- 0.3802 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering BPA: Bottom of Preamplifier