ILRS Site and System Information Form International Laser Ranging Service 0. Form Prepared by (Full Name) : Toshimichi Otsubo Preparer E-mail : t.otsubo@r.hit-u.ac.jp Date Prepared : 2024-11-07 Report Type : UPDATE Site Log Format Version : 2.0 Site Log Revision : 0.12 1. Identification of the Ranging System Reference Point (SRP) Site Name : Ishioka IERS DOMES Number : 21791M008 CDP Pad ID : 7317 Subnetwork : WPLTN Description : MONUMENT Monument Description : PILLAR Monument Inscription : N.A. Mark Description : ENGRAVED CROSS ON A METALLIC MONUMENT Date Installed : 2024-06-03 Date Removed : N.A. Geologic Characteristic : METAMORPHIC ROCKS Additional Information : DOMES Number of SLR Az-El intersection : is 21791S002. 2. Site Location Information City or Town : Ishioka State or Province : Ibaraki Country : Japan Tectonic Plate : North American Local Time (UTC +/- hours) : 9 Approximate Position X coordinate [m]: -3959592.7 Y coordinate [m]: 3296887.3 Z coordinate [m]: 3747021.0 Latitude [deg]: 36.2090 N Longitude [deg]: 140.2181 E Elevation [m]: 157 Survey Method : TBD Date Measured : 2025-MM-DD Additional Information : 3. General System Information 3.01 System Name : Ishioka 4-Character Code : ISHL CDP System Number : 95 CDP Occupation Number : 01 Eccentricity to SRP (if Not Identical With SRP) North [m]: 0.000 +- 0.003 East [m]: 0.000 +- 0.003 Up [m]: 1.5408 +- 0.003 Date Measured : 2024-10-18 Date Installed : 2024-06-03 Date Removed : Additional Information : DOMES Number of SLR Az-El intersection : is 21791S002. 4. Telescope Information 4.01 Receiving Telescope Type : RITCHE-CHRETIEN Aperture [m]: 0.2 Mount : AZ-EL Date Installed : 2024-06-03 Date Removed : Xmitting Telescope Type : REFRACTOR Aperture [m]: 0.08 Date Installed : 2024-09-01 Date Removed : Tracking Camera Type : CMOS Model : ASI 432MM Manufacturer : ZWO Field of View [deg]: 2 Minimum Magnitude [mag]: Date Installed : Date Removed : Transmit/Receive Path : SEPARATE Transmit/Receive Switch : NONE Max Slew Rate Az [deg/s]: 4 Max Slew Rate El [deg/s]: 4 Max Used Tracking Rate Az : 3 Max Used Tracking Rate El : 3 Telescope Shelter : SLIDING ROOF Daylight Filter Type : SPECTRAL FILTER Dayl. Filt. Bandwidth [nm]: 1 Adjustable Attenuation : RECEIVE Adjustable Field of View : NO Transmit Efficiency : Receive Efficiency : Date Installed : 2024-06-03 Date Removed : Additional Information : 5. Laser System Information 5.01 Laser Type : ND:YAG Model : FDSS532-Q2 Manufacturer : CryLAS Number of Amplifiers : 0 Primary Wavelength [nm]: 532 Primary Maximum Energy [mJ]: 0.006 Secondary Wavelength [nm]: Secondary Max. Energy [mJ]: Xmit Energy Adjustable : NO Additional Information : Pulse Width (FWHM) [ps]: 1060 Max. Repetition Rate [Hz]: 10000 Fullw. Beam Divergence ["]: 15 Theoretical Beam Div : Measured Beam Div : Method Used : Additional Information : Final Beam Diameter [m]: 0.08 Eyesafe : YES Eyesafe Standard : NOHD=0 Polarization on Exit : LINEAR Laser Fire Control : Laser Energy Monitor : Start Diode Type : EMBEDDED IN LASER Manufactorer : Model : Quantum Efficiency [%]: Rise/Fall Time [ps]: Date Installed : Date Removed : Signal Processing : Manufacturer : Model : Date Installed : Date Removed : Additional Information : Date Installed : 2024-06-03 Date Removed : Additional Information : 6. Receiver System 6.01.01 Primary Chain Wavelength [nm]: 532 Detector Type : SPAD Manufacturer : Hamamatsu Photonics Model : C11202-100 Quantum Efficiency [%]: 70 Nominal Gain : Rise Time [ps]: Jitter (Single PE)[ps]: Field of View Diam ["]: 15 Date Installed : Date Removed : Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : Manufacturer : Model : Date Installed : Date Removed : Amplitude Measurement : Return-Rate Controlled: Mode of Operation : Additional Information: Time of Flight Observ. : EVENT Manufacturer : Swabian Instruments Model : Time Tagger Ultra (Value) Resolution [ps]: 1 Precision [ps]: 42 Date Installed : 2024-06-03 Date Removed : Additional Information : 6.02.01 Secondary Chain Wavelength [nm]: Detector Type : Manufacturer : Model : Quantum Efficiency [%]: Nominal Gain : Rise Time [ps]: Jitter (Single PE)[ps]: Field of View Diam ["]: Date Installed : Date Removed : Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : Manufacturer : Model : Date Installed : Date Removed : Amplitude Measurement : Return-Rate Controlled: Mode of Operation : Additional Information: Time of Flight Observ. : Manufacturer : Model : Resolution [ps]: Precision [ps]: Date Installed : Date Removed : Additional Information : 6.03.01 Tertiary Chain Wavelength [nm]: Detector Type : Manufacturer : Model : Quantum Efficiency [%]: Nominal Gain : Rise Time [ps]: Jitter (Single PE)[ps]: Field of View Diam ["]: Date Installed : Date Removed : Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : Manufacturer : Model : Date Installed : Date Removed : Amplitude Measurement : Return-Rate Controlled: Mode of Operation : Additional Information: Time of Flight Observ. : Manufacturer : Model : Resolution [ps]: Precision [ps]: Date Installed : Date Removed : Additional Information : 7. Tracking Capabilities 7.01 Satellites Very Low Alt (<400 km) : YES Low Altitude (400-2000) : YES LAGEOS/LARES : NIGHT GLONASS : NO Etalon : NO GNSS : NO Geosynchronous : NO Moon : NO Ave. Pass Switch Time [s]: 60 Average values for LAGEOS Single Shot RMS [mm]: 75 # of Obs per NP : Use of Semi-trains : NO # of Semi-train Tracks : Range Gate Width [ns]: Beam Pointing Accuracy ["]: 10 Angle Encoder Resolution["]: 0.3 Min. Tracking Elev. [deg]: 20 Laser Polarization @emitter: Operation Months per Year : Days per Week : Hours per Day : Staff per Shift : System Shared With : Time Allocated to SLR [%]: Remotely Controllable : Tracking Restrictions Go/No-go flag : NO Satellite Verification : Date Verified : Maximum elevation : Satellite Verification : Date Verified : Pass segments : Satellite Verification : Date Verified : Schedule segments : Satellite Verification : Date Verified : Maximum laser power limit: Satellite Verification : Date Verified : Date First Applicable : Date Last Applicable : Additional Information : 8. Calibration 8.01 Calibration Type : PRE+POST Target Location : EXTERNAL Target Type : 1 Mirror and 1 Diffuser Target Structure : ON TRIPOD Number of Targets : 1 Target Distance(s) [m]: Date Measured : Accuracy [mm]: Verification : Return-Rate Controlled : Eye-Safe Method : Additional Information : Mode of Operation : SINGLE PHOTON Calibration performed : H Single Shot RMS [mm]: 75 Edit Criterion 1st Chain : Edit Criterion 2nd Chain : Application of Cal Data : Date Installed : 2024-06-03 Date Removed : Additional Information : 9. Time and Frequency Standards 9.01.01 Frequency Standard Type : OCXO Model : TB-1 Manufacturer : Furuno Short Term Stab. [e-12]: 50 Long Term Stab. [e-12]: 1 Time Reference : GPS+GLONASS Synchronization : GNSS Epoch Accuracy [ns]: 40 Date Installed : 2024-06-03 Date Removed : Additional Information : 9.02.01 GNSS Timing Rcvr Model : TB-1 Manufacturer : Furuno Date Installed : 2024-06-03 Date Removed : Additional Information : 9.03.01 One-way System Calibration Date performed : Direction Calibrated : Additional Information : 10. Preprocessing Information 10.01 On-site NP Generation : YES Data Screening : CPF+HISTOGRAM helped by OrbitNP.py Return-Rate Rejection : None Edit Criterion 1st Chain : Edit Criterion 2nd Chain : Upload interval : Date First Applicable : Date Last Applicable : Additional Information : 11. Aircraft Detection 11.01 Detection Type : ADS-B Manufacturer/Provider : FlightAware Automatic Laser Shutoff : Y Alarms Recorded : No Hazard Distance [km]: 0 Date Installed : 2024-06-03 Date Removed : Additional Information : 12. Meteorological Instrumentation 12.01.01 Pressure Sensor Model : PTB330 Manufacturer : Vaisala Recording Interval : 10 minutes Accuracy [mbar]: 0.15 Height Diff to SRP [m]: 0.8 Distance from SRP [m]: 4 Date Installed : 2024-06-03 03:00 UT Calibration Interval : Date Removed : Additional Information : 12.02.01 Temp Sensor Model : TR-72nw Manufacturer : T&D Recording Interval : 10 minutes Accuracy [deg C]: 0.5 Date Installed : 2024-06-03 03:00 UT Calibration Interval : Date Removed : Additional Information : 12.03.01 Humidity Sensor Model : TR-72nw Manufacturer : T&D Recording Interval : 10 minutes Accuracy [% rel h]: 5 Date Installed : 2024-06-04 03:00 UT Calibration Interval : Date Removed : Additional Information : 13. Local Ties, Eccentricities, and Collocation Information 13.01 Collocated Permanent Geodetic Systems 13.01.01.01 GNSS : ISHI Date Installed : 2014-03-11 Date Removed : Additional Info : 13.01.02.01 DORIS : NO Date Installed : Date Removed : Additional Info : 13.01.03.01 PRARE : NO Date Installed : Date Removed : Additional Info : 13.01.04.01 VLBI : YES Date Installed : 2014-04-01 Date Removed : Additional Info : 13.01.05.01 Gravimeter : ABSOLUTE Date Installed : Date Removed : Additional Info : 13.01.06.01 Other SLR : Date Installed : Date Removed : Additional Info : 13.02.01.01 Local Ties from the SRP to Other Monuments or Systems on Site Monument Name : Instrumentation Type : Instrumentation Status : DOMES Number : CDP Number : Differential Components (ITRS) dx [m]: dy [m]: dz [m]: Date Measured : Determined by : Date Installed : Date Removed : Additional Information : 13.03.01.01 Eccentricities Between Other Monuments on Site From: Monument Name : DOMES Number : CDP Number : To: Monument Name : DOMES Number : CDP Number : Differential Components (ITRS) dx [m]: dy [m]: dz [m]: Date Measured : Determined by : Additional Information : 14. Local Events Possibly Affecting Computed Position 14.01 Date : Event : Additional Information : 15. On-Site, Point of Contact Agency Information Agency : Geospatial Information Authority of Japan Mailing Address : 1 Kitasato, Tsukuba Website : www.gsi.go.jp/uchusokuchi/vlbi-igos.html Primary Contact Contact Name : Shinobu Kurihara Telephone (primary) : +81-29-864-4813 Telephone (secondary) : Fax : E-mail : kurihara-s96bb@mlit.go.jp Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Tertiary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : 16. Responsible Agency (if different from 15.) Agency : Hitotsubashi University Mailing Address : 2-1 Naka, Kunitachi Primary Contact Contact Name : Toshimichi Otsubo Telephone (primary) : +81-42-580-8968 Telephone (secondary) : Fax : E-mail : t.otsubo@r.hit-u.ac.jp Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : 17. More Information URL for More Information : Hardcopy on File Site Map : Site Diagram : Horizon Mask : Monument Description : Site Pictures : Additional Information : To be registered as an engineering station