RIGA00LVA 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) : luai@lu.lv Date Prepared : 2024-05-07 Report Type : UPDATE If Update: Previous Site Log : riga00lva_20240409.log Modified/Added Sections : 3.26 1. Site Identification of the GNSS Monument Site Name : RIGA permanent GPS Four Character ID : RIGA Monument Inscription : 10371 IERS DOMES Number : 12302M002 CDP Number : (A4) Monument Description : (PILLAR/BRASS PLATE/STEEL MAST/etc) Height of the Monument : 5.34 m Monument Foundation : 5 m diameter concrete cylinder. Foundation Depth : 12 m Marker Description : standard geodetic mark Date Installed : 1995-12-05T04:00Z Geologic Characteristic : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc) Bedrock Type : METAMORPHIC Bedrock Condition : JOINTED Fracture Spacing : 1-10 cm Fault zones nearby : No Distance/activity : No Additional Information : Concrete pillar with forced centering : and levelling brass plate. : The height of the monument is above : local ground plane. : Dolomite with a quaternary covering of : alluvium and beach deposits. 2. Site Location Information City or Town : Riga State or Province : Vidzeme Country : Latvia Tectonic Plate : EURASIAN Approximate Position (ITRF) X coordinate (m) : 3183899.344 Y coordinate (m) : 1421478.378 Z coordinate (m) : 5322810.736 Latitude (N is +) : +565655.03 Longitude (E is +) : +0240331.58 Elevation (m,ellips.) : 34.7 Additional Information : ITRF-2000 at epoch 1997.0 3. GNSS Receiver Information 3.1 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : UNKNOWN Firmware Version : UNKNOWN Elevation Cutoff Setting : 5 deg Date Installed : 1995-12-05T04:00Z Date Removed : 1996-03-28T23:59Z Temperature Stabiliz. : 18.0 +/- 4.0 Additional Information : from FGI Finnland 3.2 Receiver Type : ROGUE SNR-8000 Satellite System : GPS Serial Number : 223 Firmware Version : 2.8 Elevation Cutoff Setting : 5 deg Date Installed : 1996-03-29T00:00Z Date Removed : 1999-09-02T13:10Z Temperature Stabiliz. : 18.0 +/- 4.0 Additional Information : from OSO Sweden. 3.3 Receiver Type : ROGUE SNR-8000 Satellite System : GPS Serial Number : 223 Firmware Version : 2.8.0.7 Elevation Cutoff Setting : 5 deg Date Installed : 1999-09-02T13:45Z Date Removed : 2005-01-13T00:30Z Temperature Stabiliz. : 18.0 +/- 4.0 Additional Information : from OSO Sweden. 3.4 Receiver Type : AOA BENCHMARK ACT Satellite System : GPS Serial Number : 2050 Firmware Version : 3.3.32.5 Elevation Cutoff Setting : 4 deg Date Installed : 2005-01-13T10:08Z Date Removed : 2006-06-17T00:00Z Temperature Stabiliz. : 18.0 +/- 4.0 Additional Information : LUAI property. 3.5 Receiver Type : ROGUE SNR-8000 Satellite System : GPS Serial Number : 223 Firmware Version : 2.8.0.7 Elevation Cutoff Setting : 5 deg Date Installed : 2006-06-18T00:00Z Date Removed : 2007-01-08T13:00Z Temperature Stabiliz. : 18.0 +/- 4.0 Additional Information : from OSO Sweden. 3.6 Receiver Type : AOA BENCHMARK ACT Satellite System : GPS Serial Number : 2050 Firmware Version : 3.3.32.5 Elevation Cutoff Setting : 4 deg Date Installed : 2007-01-08T13:00Z Date Removed : 2007-05-24T10:00Z Temperature Stabiliz. : 18.0 +/- 4.0 Additional Information : LUAI property 3.7 Receiver Type : ROGUE SNR-8000 Satellite System : GPS Serial Number : 223 Firmware Version : 2.8.0.7 Elevation Cutoff Setting : 5 deg Date Installed : 2007-05-29T11:00Z Date Removed : 2007-09-10T08:30Z Temperature Stabiliz. : 18.0 +/- 4.0 Additional Information : from OSO Sweden. 3.8 Receiver Type : AOA BENCHMARK ACT Satellite System : GPS Serial Number : 2050 Firmware Version : 3.3.32.5 Elevation Cutoff Setting : 4 deg Date Installed : 2007-09-10T09:00Z Date Removed : 2007-12-06T12:00Z Temperature Stabiliz. : 18.0 +/- 4.0 Additional Information : LUAI property 3.9 Receiver Type : LEICA GRX1200PRO Satellite System : GPS Serial Number : 453321 Firmware Version : 5.60/2.125 Elevation Cutoff Setting : 4 deg Date Installed : 2007-12-16T12:00Z Date Removed : 2012-12-12T15:20Z Temperature Stabiliz. : 18.0 +/- 4.0 Additional Information : none 3.10 Receiver Type : LEICA GRX1200PRO Satellite System : GPS Serial Number : 453321 Firmware Version : 5.60/2.127 Elevation Cutoff Setting : 4 deg Date Installed : 2012-12-12T15:20Z Date Removed : 2013-12-11T09:00Z Temperature Stabiliz. : 18.0 +/- 4.0 Additional Information : (multiple lines) 3.11 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+SBAS Serial Number : 1830430 Firmware Version : 3.03/6.214 Elevation Cutoff Setting : 0 deg Date Installed : 2013-12-11T13:00Z Date Removed : 2014-08-14T00:00Z Temperature Stabiliz. : 18.0 +/- 4.0 Additional Information : LUAI property. 3.12 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+SBAS Serial Number : 1830430 Firmware Version : 3.10.1633/6.403 Elevation Cutoff Setting : 0 deg Date Installed : 2014-08-14T00:00Z Date Removed : 2015-05-11T10:00Z Temperature Stabiliz. : 18.0 +/- 4.0 Additional Information : LUAI property. 3.13 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+SBAS Serial Number : 1830430 Firmware Version : 3.11.1639/6.403 Elevation Cutoff Setting : 0 deg Date Installed : 2015-05-11T10:00Z Date Removed : 2015-10-29T17:10Z Temperature Stabiliz. : 18.0 +/- 4.0 Additional Information : (multiple lines) 3.14 Receiver Type : LEICA GR25 Satellite System : GPS+GLO Serial Number : 1830430 Firmware Version : 3.21.1806/6.403 Elevation Cutoff Setting : 0 deg Date Installed : 2015-10-29T17:10Z Date Removed : 2016-01-14T12:20Z Temperature Stabiliz. : 20.0 +/- 4.0 Additional Information : Temporary removed GAL+SBAS from tracked : satellite systems to match currently submitted : data 3.15 Receiver Type : LEICA GR25 Satellite System : GPS+GLO Serial Number : 1830430 Firmware Version : 3.22.1818/6.521 Elevation Cutoff Setting : 0 deg Date Installed : 2016-01-14T12:20Z Date Removed : 2016-06-08T09:15Z Temperature Stabiliz. : 20.0 +/- 4.0 Additional Information : (multiple lines) 3.16 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+SBAS Serial Number : 1830430 Firmware Version : 4.00/6.522 Elevation Cutoff Setting : 0 deg Date Installed : 2016-06-08T09:15Z Date Removed : 2016-12-20T11:20Z Temperature Stabiliz. : 21.0 +/- 4.0 Additional Information : (multiple lines) 3.17 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1830430 Firmware Version : 4.02/6.522 Elevation Cutoff Setting : 0 deg Date Installed : 2016-12-20T11:20Z Date Removed : 2017-02-22T13:10Z Temperature Stabiliz. : 21.0 +/- 4.0 Additional Information : (multiple lines) 3.18 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1830430 Firmware Version : 4.11/6.523 Elevation Cutoff Setting : 0 deg Date Installed : 2017-02-22T13:10Z Date Removed : 2018-03-28T06:00Z Temperature Stabiliz. : 21.0 +/- 4.0 Additional Information : (multiple lines) 3.19 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1830430 Firmware Version : 4.20/6.524 Elevation Cutoff Setting : 0 deg Date Installed : 2018-03-28T06:00Z Date Removed : 2019-04-06T08:00Z Temperature Stabiliz. : 21.0 +/- 4.0 Additional Information : (multiple lines) 3.20 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1830430 Firmware Version : 4.30/6.525 Elevation Cutoff Setting : 0 deg Date Installed : 2019-04-06T08:59Z Date Removed : 2019-10-14T12:11Z Temperature Stabiliz. : 21.0 +/- 4.0 Additional Information : (multiple lines) 3.21 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1830430 Firmware Version : 4.30/6.713 Elevation Cutoff Setting : 0 deg Date Installed : 2019-10-14T12:11Z Date Removed : 2021-06-08T12:40Z Temperature Stabiliz. : 23.0 +/- 1.0 Additional Information : (multiple lines) 3.22 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1830430 Firmware Version : 4.50/6.525 Elevation Cutoff Setting : 0 deg Date Installed : 2021-06-08T12:50Z Date Removed : 2022-07-06T13:50Z Temperature Stabiliz. : 23.0 +/- 1.0 Additional Information : (multiple lines) 3.23 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1830430 Firmware Version : 4.52/6.525 Elevation Cutoff Setting : 0 deg Date Installed : 2022-07-06T13:50Z Date Removed : 2022-11-01T14:30Z Temperature Stabiliz. : 23.0 +/- 1.0 Additional Information : (multiple lines) 3.24 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1830430 Firmware Version : 4.60/6.525 Elevation Cutoff Setting : 0 deg Date Installed : 2022-11-01T14:30Z Date Removed : 2023-07-25T14:45Z Temperature Stabiliz. : 23.0 +/- 1.0 Additional Information : (multiple lines) 3.25 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1830430 Firmware Version : 4.70/6.525 Elevation Cutoff Setting : 0 deg Date Installed : 2023-07-25T14:45Z Date Removed : 2024-04-04T10:00Z Temperature Stabiliz. : 23.0 +/- 1.0 Additional Information : (multiple lines) 3.26 Receiver Type : LEICA GR25 Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 1830430 Firmware Version : 4.80/6.525 Elevation Cutoff Setting : 0 deg Date Installed : 2024-04-04T10:00Z Date Removed : CCYY-MM-DDThh:mmZ Temperature Stabiliz. : 23.0 +/- 1.0 Additional Information : (multiple lines) 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 : AOAD/M_T NONE Serial Number : 519 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0850 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 : NONE Antenna Cable Type : AWM RG214/U STYLE 1354 E96824-I Antenna Cable Length : 60 m Date Installed : 1995-12-05T04:00Z Date Removed : 1996-03-28T23:59Z Additional Information : from FGI Finnland 4.2 Antenna Type : ASH700936D_M NONE Serial Number : 11471 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0850 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 : NONE Antenna Cable Type : AWM RG214/U STYLE 1354 E96824-I Antenna Cable Length : 60 m Date Installed : 1996-03-29T00:00Z Date Removed : 2005-01-13T00:30Z Additional Information : from OSO Sweden 4.3 Antenna Type : AOAD/M_T NONE Serial Number : 532 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0850 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 : NONE Antenna Cable Type : AWM RG214/U STYLE 1354 E96824-I Antenna Cable Length : 60 m Date Installed : 2005-01-13T10:08Z Date Removed : 2006-05-20T06:00Z Additional Information : Internally Damaged 4.4 Antenna Type : ASH700936D_M NONE Serial Number : 11471 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0850 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 : NONE Antenna Cable Type : AWM RG214/U STYLE 1354 E96824-I Antenna Cable Length : 60 m Date Installed : 2006-05-22T00:00Z Date Removed : 2007-12-06T12:00Z Additional Information : The same as in point 4.2 4.5 Antenna Type : LEIAT504 LEIS Serial Number : 102588 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0850 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : LEIS Radome Serial Number : NONE Antenna Cable Type : AWM RG214/U STYLE 1354 E96824-I Antenna Cable Length : 60 m Date Installed : 2007-12-16T12:00Z Date Removed : 2013-12-11T09:00Z Additional Information : NONE 4.6 Antenna Type : LEIAR25.R4 LEIT Serial Number : 726676 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0850 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 Antenna Cable Length : 50 m Date Installed : 2013-12-11T15:00Z 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 5.1 Tied Marker Name : S1884 Laser telescope LS-105 Tied Marker Usage : SLR Tied Marker CDP Number : 1884 Tied Marker DOMES Number : 12302S002 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : -3.401 m dy (m) : 18.661 m dz (m) : -6.963 m Accuracy (mm) : 2 mm Survey method : GPS CAMPAIGN Date Measured : 1995-06-10T12:00Z Additional Information : from local GPS session. 5.2 Tied Marker Name : M1884 Moblas platform Tied Marker Usage : SLR Tied Marker CDP Number : 7560 Tied Marker DOMES Number : 12302M001 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 14.834 m dy (m) : -4.832 m dz (m) : -13.919 m Accuracy (mm) : 2 mm Survey method : GPS CAMPAIGN Date Measured : 1995-06-10T12:00Z Additional Information : local GPS session 5.3 Tied Marker Name : S1884 LASER TELESCOPE LS-105 Tied Marker Usage : SLR Tied Marker CDP Number : 1884 Tied Marker DOMES Number : 12302S002 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : -3.405 m dy (m) : 18.661 m dz (m) : -6.963 m Accuracy (mm) : 2 mm Survey method : WITH TACHEOMETRE SET-4220 Date Measured : 2004-12-20T10:00Z Additional Information : local survey 5.4 Tied Marker Name : M1884 MOBLAS PLATFORM Tied Marker Usage : SLR Tied Marker CDP Number : 7560 Tied Marker DOMES Number : 12302M001 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 14.821 m dy (m) : -4.837 m dz (m) : -13.908 m Accuracy (mm) : 2 mm Survey method : WITH TACHEOMETRE SET-4220 Date Measured : 2004-12-20T10:00Z Additional Information : local survey 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 : 1995-12-05/2005-01-13 Notes : (multiple lines) 6.2 Standard Type : INTERNAL Input Frequency : (if external) Effective Dates : 2005-01-13/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 7.1 Instrumentation Type : ABSOLUTE GRAVIMETER JILAG-5 Status : MOBILE Effective Dates : 1995-10-25/1995-10-29 Notes : Finnish Geodetic Institute. 7.2 Instrumentation Type : SLR Status : PERMANENT Effective Dates : 1995-12-05/CCYY-MM-DD Notes : EUROLAS Consortium. 7.3 Instrumentation Type : ABSOLUTE GRAVIMETER FG5/101 Status : MOBILE Effective Dates : 1996-05-07/1996-05-11 Notes : IFAG Germany 7.4 Instrumentation Type : ABSOLUTE GRAVIMETER FG5/107 Status : MOBILE Effective Dates : 1996-08-01/1996-08-12 Notes : DMA USA 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 : Hair Hygrometer Manufacturer : USSR Serial Number : M34-3359 Data Sampling Interval : 3600 sec Accuracy (% rel h) : 10 % rel h Aspiration : fan Height Diff to Ant : 3.5 m Calibration date : (CCYY-MM-DD) Effective Dates : 1995-12-05/2007-03-30 Notes : No meteo files given. : Not in use for GPS. : Not calibrated. 8.1.2 Humidity Sensor Model : WXT510 Manufacturer : VAISALA Serial Number : C1150003 Data Sampling Interval : 600 sec Accuracy (% rel h) : 3 % rel h Aspiration : NATURAL Height Diff to Ant : -2 m Calibration date : 2007-03-16 Effective Dates : 2007-03-30/CCYY-MM-DD Notes : Calibrated at Factory. : 3% accur. between 0 and 90% RH : 5% accur. between 90 and 100% RH 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 : Precisions Barometer Manufacturer : Paulin Stockholm Serial Number : VBM2-1443 Data Sampling Interval : 3600 sec Accuracy : 0.2 hPa Height Diff to Ant : 3.5 m Calibration date : (CCYY-MM-DD) Effective Dates : 1995-12-05/2007-03-30 Notes : No meteo files given. : Not in use for GPS. : Not calibrated. 8.2.2 Pressure Sensor Model : WXT510 Manufacturer : VAISALA Serial Number : C1150003 Data Sampling Interval : 600 sec Accuracy : 0.5 hPa Height Diff to Ant : -2 m Calibration date : 2007-03-16 Effective Dates : 2007-03-30/CCYY-MM-DD Notes : Calibrated at Factory. 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 : Mercury Thermometer Manufacturer : USSR Serial Number : TMZ-4970 Data Sampling Interval : 3600 sec Accuracy : 0.1 deg C Aspiration : UNASPIRATED Height Diff to Ant : 3.5 m Calibration date : (CCYY-MM-DD) Effective Dates : 1995-12-05/2007-03-30 Notes : No meteo files given. : Not in use for GPS. : Not calibrated after factory, hence calibration : date is unknown 8.3.2 Temp. Sensor Model : WXT510 Manufacturer : VAISALA Serial Number : C1150003 Data Sampling Interval : 600 sec Accuracy : 0.3 deg C Aspiration : NATURAL Height Diff to Ant : -2 m Calibration date : 2007-03-16 Effective Dates : 2007-03-30/CCYY-MM-DD Notes : Calibrated at Factory 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) 9.2.1 Multipath Sources : Transit instrument metal roof Effective Dates : 1995-12-05/2013-12-10 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) 9.3.1 Signal Obstructions : TREES and BUILDINGS Effective Dates : 1995-12-05/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 : Institute of Astronomy University of Latvia Preferred Abbreviation : LUAI Mailing Address : Boulevard Rainis 19 : LV 1586 Riga : Latvia Primary Contact Contact Name : Institute of Astronomy University of Latvia Telephone (primary) : Telephone (secondary) : Fax : E-mail : luai@lu.lv 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 : URL for More Information : Hardcopy on File Site Map : Y Site Diagram : Y Horizon Mask : Y Monument Description : Y Site Pictures : Y Additional Information : (multiple lines) Antenna Graphics with Dimensions AOAD/M_T ASH700936D_M ----- L2 Phase center / + \ <--------------------+ L1 Phase center | + | <---------------+ | +--------------------------------------------------+ | | | TCR | | | | | | | | | | | | | | | +-+--------------------------------------------------+-+ | | +-------------------+-------------+--------------------+ | | | | BCR | | | | | 0.213m BPA => +=============+ <---+ | | | FC | | 0.195m | | Mount | 0.085 m | | | | | | | Monum.ref.point => | +-+ | <---+----------------+----+ +----------+=====| |=====+----------+ | | | | | Concrete pillar | | | ROGUE AOAD/M_T MODEL 7490582-2 ____________ / + L2 \ + _________________|_______ ______|___________________ 0.1214 | | + L1 | + | 0.1016 | 0.0952 ==========|========================================= | |___ |______________| __ _________________| | BPA | | | | 0.0850 ____|_______x______|_|___ | MARK | | | Antenna/choke ring assembly phase center offsets L1 offset X=0.40 cm, Y=0.20cm, Z=-0.64cm L2 offset X=0.36cm, Y=0.12cm, Z=1.98cm Horizon mask (degr.) Azimuth Open from Closed by 000 - 063 10 trees 063 - 086 15 trees 086 - 175 10 trees 175 - 252 15 houses 252 - 258 10 houses