OP71 Site Information Form (site log) International GNSS Service See Instructions at: ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Dr Pierre Uhrich Date Prepared : 2019-12-13 Report Type : Modified If Update: Previous Site Log : 2018-12-20 Modified/Added Sections : 3.2,11 1. Site Identification of the GNSS Monument Site Name : Observatoire de Paris Four Character ID : OP71 Monument Inscription : None IERS DOMES Number : 10001S007 CDP Number : None Monument Description : Concrete balk and metallic mast Height of the Monument : 5.0 Monument Foundation : ROOF Foundation Depth : 14.73 Marker Description : (CHISELLED CROSS/DIVOT/BRASS NAIL/etc) Date Installed : 2016-10-18T00:00Z Geologic Characteristic : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc) Bedrock Type : (IGNEOUS/METAMORPHIC/SEDIMENTARY) Bedrock Condition : (FRESH/JOINTED/WEATHERED) Fracture Spacing : (1-10 cm/11-50 cm/51-200 cm/over 200 cm) Fault zones nearby : (YES/NO/Name of the zone) Distance/activity : (multiple lines) Additional Information : (multiple lines) 2. Site Location Information City or Town : Paris State or Province : Ile-de-France Country : FRANCE Tectonic Plate : EURASIAN Approximate Position (ITRF) X coordinate (m) : 4202779.735 Y coordinate (m) : 171370.766 Z coordinate (m) : 4778660.650 Latitude (N is +) : +485009.2611 Longitude (E is +) : +0022005.9097 Elevation (m,ellips.) : 124.553 Additional Information : Antenna coordinates as computed in May : 2018 from a local NRCan PPP processing 3. GNSS Receiver Information 3.1 Receiver Type : SEPT POLARX4TR Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 3009606 Firmware Version : 2.9.6 Elevation Cutoff Setting : 5 Date Installed : 2016-10-18T00:00Z Date Removed : 2018-12-05T23:59Z Temperature Stabiliz. : Between 19.5 degrees C and 23.5 degrees C Additional Information : Data delivery stopped due to a signal to noise issue in : the received GNSS signal related to a local interference : close to the L1-Band 3.2 Receiver Type : SEPT POLARX4TR Satellite System : GPS+GLO+GAL+BDS+SBAS Serial Number : 3009606 Firmware Version : 2.9.6 Elevation Cutoff Setting : 5 Date Installed : 2019-12-01T00:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : Between 20.0 degrees C and 22.0 degrees C Additional Information : The jamming signal from a local transmitter was eventually : limited in power in November 2019, allowing for a nominal : GNSS L1-Band data collection back again. Meanwhile, the : temperature monitoring control system was upgraded : in the operation room where the main units are located. 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.R4 LEIT Serial Number : 725498 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0000 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : LEIT Radome Serial Number : Unknown Antenna Cable Type : Andrew FSJ2P-50N Antenna Cable Length : 25 m Date Installed : 2016-10-18T00:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : The length of antenna cable outside the building : is approximately 6 m 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 : EXTERNAL UTC(OP) Input Frequency : 1 PPS and 10 MHz Effective Dates : 2016-10-18/CCYY-MM-DD Notes : Real-time prediction of UTC in Observatoire : de Paris (OP) based on an H-maser signal : steered on Primary Frequency Standards. : The required 1 PPS signal is coming from the : output 7 of the TimeTech Pulse Distribution : Unit 0174 labelled 'UTCOPÕ. : The required 10 MHz signal is coming from the : output A3 of the TimeTech Frequency Distribution : Amplifier 88 labelled Ô10MHzUTCOPÕ. 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 : GNSS receiver Status : PERMANENT Effective Dates : 2016-10-18/CCYY-MM-DD Notes : SEPT POLARX3TR ÔOPM6Õ 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 : None 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 : None 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 : None 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 : None 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) 9.3.1 Signal Obstructions : BUILDINGS Effective Dates : 2016-10-18/CCYY-MM-DD Additional Information : The horizon profile is clear above an elevation : of 5 degrees except between the azimuths 240 degrees : E and 330 degrees E where the buildings' mask can : reach an elevation of 45 degrees with an average value : of 23 degrees 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 : LNE-SYRTE : Observatoire de Paris : UniversitŽ PSL : CNRS : Sorbonne UniversitŽ Preferred Abbreviation : OP Mailing Address : LNE-SYRTE : Observatoire de Paris : 61 avenue de l'Observatoire : F-75014 Paris : France Primary Contact Contact Name : Pierre Uhrich Telephone (primary) : +33(0)140512217 Telephone (secondary) : Fax : +33(0)143255542 E-mail : pierre.uhrich@obspm.fr Secondary Contact Contact Name : Baptiste Chupin Telephone (primary) : +33(0)140512215 Telephone (secondary) : Fax : +33(0)143255542 E-mail : baptiste.chupin@obspm.fr Additional Information : The name of the Agency was formerly BNM-LPTF : then BNM-SYRTE with OP as convenient acronym 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 : IGN Secondary Data Center : BKG 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.R4 +-------+ <-- 0.1995 / \ +---+-------------+---+ <-- 0.1606 TCR | | |---------------------------| |---------------------------------| |---------------------------------------| +---------------------------------------------+ | | | | +-+---------------------------------------------+-+ +-----------------+-------------+-----------------+ <-- 0.0320 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP (5/8" thread might differ from BPA!) <-- 0.3802 --> NOM=NRP