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              : 2025-04-11
      Report Type                : UPDATE
      Site Log Format Version    : 2.0
      Site Log Revision          : 0.13


 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]: 3296886.6
        Z coordinate          [m]: 3747021.9
        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 Marker is 21791M008, 
                                 : that 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                    : FMA180Pro+ASI533MM and FMA180Pro+ASI178MM
        Manufacturer             : Askar and 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           : 
      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        : 2024-06-03
           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]: 65
        # of Obs per NP          : 10
        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: LINEAR
      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           : METAL POLE
      Number of Targets          : 1
      Target Distance(s)      [m]: 11.3086
        Date Measured            : 2025-03-24
        Accuracy             [mm]: 0.003
        Verification             : 
      Return-Rate Controlled     : YES
      Eye-Safe Method            : 
        Additional Information   : 
      Mode of Operation          : SINGLE PHOTON
      Calibration performed      : HOU
      Single Shot RMS        [mm]: 65
      Edit Criterion 1st Chain   : 
      Edit Criterion 2nd Chain   : 
      Application of Cal Data    : 
      Date Installed             : 2025-01-17
      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 with OrbitNP.py
      Return-Rate Rejection      : Always single photoelectron; 10+ returns/NP
      Edit Criterion 1st Chain   : Iterative 3 sigma rejection using OrbitNP.py
      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    : YES
      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      : 5 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      : 5 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      : 5 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                     : Hitotsubashi University
      Mailing Address            : 2-1 Naka, Kunitachi
      Website                    : geo.science.hit-u.ac.jp
      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                   : 
      Tertiary Contact
        Contact Name             : 
        Telephone (primary)      : 
        Telephone (secondary)    : 
        Fax                      : 
        E-mail                   : 
      Additional Information     : 


16.   Responsible Agency (if different from 15.)

      Agency                     : Geospatial Information Authority of Japan
      Mailing Address            : 1 Kitasato, Tsukuba
      Primary Contact
        Contact Name             : Takahiro Wakasugi
        Telephone (primary)      : +81-29-864-4813
        Telephone (secondary)    : 
        Fax                      : 
        E-mail                   : wakasugi-t96kg@mlit.go.jp
      Secondary Contact
        Contact Name             : 
        Telephone (primary)      : 
        Telephone (secondary)    : 
        Fax                      : 
        E-mail                   : 
      Additional Information     : www.gsi.go.jp/uchusokuchi/vlbi-igos.html


17.   More Information

      URL for More Information   : 
      Hardcopy on File
        Site Map                 : 
        Site Diagram             : 
        Horizon Mask             : 
        Monument Description     : 
        Site Pictures            : 
      Additional Information     : Registered as an engineering station