ILRS Site and System Information Form
      International Laser Ranging Service

 0.   Form

      Prepared by (Full Name)    : Arttu Raja-Halli
      Preparer E-mail            : arttu.raja-halli@nls.fi
      Date Prepared              : 2017-11-06
      Report Type                : UPDATE
      Site Log Format Version    : 2.0
      Site Log Revision          : 


 1.   Identification of the Ranging System Reference Point (SRP)

      Site Name                  : Metsahovi SLR
      IERS DOMES Number          : 10503S014
      CDP Pad ID                 : 7806
      Subnetwork                 : EUROLAS
      Description                : AZ EL INTERSECT
      Monument Description       : N.A.
      Monument Inscription       : N.A.
      Mark Description           : N.A.
      Date Installed             : 1996-10-15
      Date Removed               : 
      Geologic Characteristic    : BEDROCK
      Additional Information     : There is a concrete pillar with a
                                 : central steel marker under the
                                 : telescope, which has never been surveyed
                                 : and has no DOMES number.


 2.   Site Location Information

      City or Town               : Kirkkonummi
      State or Province          : Uusimaa
      Country                    : Finland
      Tectonic Plate             : Eurasian
      Local Time (UTC +/- hours) : 
      Approximate Position
        X coordinate          [m]: 2892607.149
        Y coordinate          [m]: 1311813.079
        Z coordinate          [m]: 5512598.659
        Latitude            [deg]: 60.2172 N
        Longitude           [deg]: 24.3946 E
        Elevation             [m]: 74.042
      Survey Method              : 
      Date Measured              : 
      Additional Information     : ref. ITRF97 1997.0


 3.   General System Information

 3.01 System Name                : Metsahovi SLR
      4-Character Code           : METL
      CDP System Number          : 76
      CDP Occupation Number      : 01
      Eccentricity to SRP (if Not Identical With SRP)
        North                 [m]: 
        East                  [m]: 
        Up                    [m]: 
        Date Measured            : 
      Date Installed             : 1996-10-15
      Date Removed               : 
      Additional Information     : 


 4.   Telescope Information

 4.01 Receiving Telescope Type   : CASSEGRAIN/MANGIN
        Aperture              [m]: 1.0
        Mount                    : AZ-EL
      Date Installed             : 
      Date Removed               : 
      Xmitting Telescope Type    : VIA RECEIVER OPTICS
        Aperture              [m]: 0.4 (RESERVED)
      Date Installed             : 
      Date Removed               : 
      Tracking Camera Type       : CCD+IMAGE AMPLIFIER
        Model                    : EDC 1000
        Manufacturer             : Electrim
        Field of View       [deg]: 0.2
        Minimum Magnitude   [mag]: 12
      Date Installed             : 
      Date Removed               : 
      Transmit/Receive Path      : COMMON COUDE
      Transmit/Receive Switch    : NONE
      Max Slew Rate Az    [deg/s]: 2
      Max Slew Rate El    [deg/s]: 2
      Max Used Tracking Rate Az  : 2
      Max Used Tracking Rate El  : 2
      Telescope Shelter          : ROLL-BACK ROOF
      Daylight Filter Type       : SPECTRAL FILTER
      Dayl. Filt. Bandwidth  [nm]: 1
      Adjustable Attenuation     : NO
      Adjustable Field of View   : 
      Transmit Efficiency        : 0.6
      Receive Efficiency         : 0.15
      Date Installed             : 1996-10-15
      Date Removed               : 
      Additional Information     : 


 5.   Laser System Information

 5.01 Laser Type                 : ND:YAG
      Model                      : 
      Manufacturer               : 
      Number of Amplifiers       : 2
      Primary Wavelength     [nm]: 1064
      Primary Maximum Energy [mJ]: 30
      Secondary Wavelength   [nm]: 532
      Secondary Max. Energy  [mJ]: 15
      Xmit Energy Adjustable     : YES
        Additional Information   : 
      Pulse Width (FWHM)     [ps]: 50
      Max. Repetition Rate   [Hz]: 1
      Fullw. Beam Divergence  ["]: 10 - 30
        Theoretical Beam Div     : 
        Measured Beam Div        : 
          Method Used            : 
          Additional Information : 
      Final Beam Diameter     [m]: 0.3
      Eyesafe                    : NO
      Eyesafe Standard           : ANSI 136.1
      Polarization on Exit       : 
      Laser Fire Control         : 
      Laser Energy Monitor       : 
      Start Diode Type           : 
        Manufactorer             : 
        Model                    : 
        Quantum Efficiency    [%]: 
        Rise/Fall Time       [ps]: 
        Date Installed           : 
        Date Removed             : 
        Signal Processing        : 
          Manufacturer           : 
          Model                  : 
          Date Installed         : 
          Date Removed           : 
          Additional Information : 
      Date Installed             : 1996-10-15
      Date Removed               : 
      Additional Information     : Pulse Width (FWHM): <50


 6.   Receiver System

 6.01.01 Primary Chain
         Wavelength          [nm]: 532
         Detector Type           : PMT
           Manufacturer          : Hamamatsu
           Model                 : R4998
           Quantum Efficiency [%]: 8
           Nominal Gain          : 3e6
           Rise Time         [ps]: 700
           Jitter (Single PE)[ps]: 100
           Field of View Diam ["]: 30 - 120
           Date Installed        : 1996-10-15
           Date Removed          : 
         Amplifier Type          : 
           Manufacturer          : 
           Model                 : 
           Gain                  : 
           Bandwidth             : 
           Date Installed        : 
           Date Removed          : 
           Additional Information: 
         Signal Processing       : CFD
           Manufacturer          : Ortec
           Model                 : 9307
           Date Installed        : 1996-10-15
           Date Removed          : 
           Amplitude Measurement : NO
           Return-Rate Controlled: NO
           Mode of Operation     : 
           Additional Information: 
         Time of Flight Observ.  : INTERVAL
           Manufacturer          : Latvian University
           Model                 : Comtis 911E
           Resolution        [ps]: 1
           Precision         [ps]: 25
           Date Installed        : 1996-10-15
           Date Removed          : 
         Additional Information  : Amplitude monitored by oscilloscope.
                                 : The counter is nominally an event
                                 : timer, because it stores the laser epoch,
                                 : with a resolution of 400 ns, but time delay
                                 : measurement is like a normal time
                                 : interval (one channel input is used)

 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)   : NIGHT
        Low Altitude (400-2000)  : NIGHT
        LAGEOS/LARES             : NIGHT
        GLONASS                  : NIGHT
        Etalon                   : NIGHT
        GNSS                     : NO
        Geosynchronous           : 
        Moon                     : NO
      Ave. Pass Switch Time   [s]: 90
      Average values for LAGEOS
        Single Shot RMS      [mm]: 17
        # of Obs per NP          : 15
        Use of Semi-trains       : YES
        # of Semi-train Tracks   : 4
      Range Gate Width       [ns]: 400 - 100000
      Beam Pointing Accuracy  ["]: 30
      Angle Encoder Resolution["]: 1
      Min. Tracking Elev.   [deg]: 15
      Laser Polarization @emitter: 
      Operation
        Months per Year          : 12
        Days per Week            : 7
        Hours per Day            : 3 - 15
        Staff per Shift          : 1
        System Shared With       : NOTHING
        Time Allocated to SLR [%]: 100
        Remotely Controllable    : NO
      Tracking Restrictions
        Go/No-go flag            : 
          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      : 1996-10-15 HH:MM UT
      Date Last Applicable       : 
      Additional Information     : Hours per day: 3-15, nighttime


 8.   Calibration

 8.01 Calibration Type           : PRE
      Target Location            : EXTERNAL
      Target Type                : CORNER CUBE
      Target Structure           : METAL FRAME
      Number of Targets          : 
      Target Distance(s)      [m]: 320.697
        Date Measured            : 2000-05-16
        Accuracy             [mm]: 3
        Verification             : GPS survey
      Return-Rate Controlled     : NO
      Eye-Safe Method            : 
        Additional Information   : 
      Mode of Operation          : SINGLE/FEW/MULTI PHOTON
      Calibration performed      : 10
      Single Shot RMS        [mm]: 15
      Edit Criterion 1st Chain   : ITERATIVE 2.5 SIGMA
      Edit Criterion 2nd Chain   : N.A.
      Application of Cal Data    : AVERAGE
      Date Installed             : 1996-10-15
      Date Removed               : 
      Additional Information     : laser calibration done infrequently,
                                 : electronic calibration of the receiver
                                 : channel several tines per session
                                 : Calibration type: `EPISODIC LASER RANGING`


 9.   Time and Frequency Standards

 9.01.01 Frequency Standard Type : H-MASER
         Model                   : EFOS
         Manufacturer            : Oscilloquartz
         Short Term Stab.  [e-12]: 10
         Long Term Stab.   [e-12]: 0.5
         Time Reference          : GPS
         Synchronization         : GPS
         Epoch Accuracy      [ns]: 1000
         Date Installed          : 1996-10-15
         Date Removed            : 
         Additional Information  : 

 9.02.01 GNSS Timing Rcvr Model  : 8810
         Manufacturer            : Trak Systems
         Date Installed          : 1994-12-01
         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             : IRV+POLYNOMIAL/ORBIT+POLYNOMIAL
      Return-Rate Rejection      : 
      Edit Criterion 1st Chain   : ITERATIVE 2.5 SIGMA
      Edit Criterion 2nd Chain   : N.A.
      Upload interval            : DAILY OR FASTER
      Date First Applicable      : 1996-10-15 HH:MM UT
      Date Last Applicable       : 
      Additional Information     : data screening by adaptive median
                                 : polynonmial filtering


11.   Aircraft Detection

11.01 Detection Type             : MOUNT OBSERVER
      Manufacturer/Provider      : 
      Automatic Laser Shutoff    : 
      Alarms Recorded            : 
      Hazard Distance        [km]: 
      Date Installed             : 
      Date Removed               : 
      Additional Information     : 


12.   Meteorological Instrumentation

12.01.01 Pressure Sensor Model   : PTB200A
         Manufacturer            : Vaisala
         Recording Interval      : EVERY 10 MINUTES
         Accuracy          [mbar]: 0.2
         Height Diff to SRP   [m]: 0
         Distance from SRP    [m]: 
         Date Installed          : 1997-05-21 HH:MM UT
         Calibration Interval    : to be determined
         Date Removed            : 
         Additional Information  : 

12.02.01 Temp Sensor Model       : HMP35D
         Manufacturer            : Vaisala
         Recording Interval      : EVERY 10 MINUTES
         Accuracy         [deg C]: 0.2
         Date Installed          : 1997-05-21 HH:MM UT
         Calibration Interval    : to be determined
         Date Removed            : 
         Additional Information  : 

12.03.01 Humidity Sensor Model   : HMP35D
         Manufacturer            : Vaisala
         Recording Interval      : EVERY 10 MINUTES
         Accuracy       [% rel h]: 3
         Date Installed          : 1997-05-21 HH:MM UT
         Calibration Interval    : to be determined
         Date Removed            : 
         Additional Information  : 


13.   Local Ties, Eccentricities, and Collocation Information

13.01 Collocated Permanent Geodetic Systems

13.01.01.01 GNSS                 : IGS+EUREF
            Date Installed       : 1992-05-01
            Date Removed         : 
            Additional Info      : 
13.01.01.02 GNSS                 : IGLOS
            Date Installed       : 1998-10-12
            Date Removed         : 
            Additional Info      : 
13.01.02.01 DORIS                : IDS
            Date Installed       : 1988-06-21
            Date Removed         : 2000-10-25
            Additional Info      : META
13.01.02.02 DORIS                : IDS
            Date Installed       : 2000-10-26
            Date Removed         : 
            Additional Info      : METB
13.01.03.01 PRARE                : NO
            Date Installed       : 
            Date Removed         : 
            Additional Info      : 
13.01.04.01 VLBI                 : YES
            Date Installed       : 1989-07-01
            Date Removed         : 1989-07-10
            Additional Info      : MV-3, European campaign
13.01.05.01 Gravimeter           : SUPERCONDUCTING
            Date Installed       : 1994-08-10
            Date Removed         : 
            Additional Info      : ABSOLUTE FG5 episodically.
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           : GPS METS (IGS/EUREF)
         Instrumentation Type    : GPS
         Instrumentation Status  : PERMANENT
         DOMES Number            : 10503S011
         CDP Number              : N.A.
         Differential Components (ITRS)
           dx                 [m]: -36.216 +- 0.003
           dy                 [m]: 30.258 +- 0.003
           dz                 [m]: 35.388 +- 0.003
           Date Measured         : 1996-10-15
           Determined by         : survey, GPS
         Date Installed          : 1996-10-15
         Date Removed            : 
         Additional Information  : 

13.03.01.01 Eccentricities Between Other Monuments on Site

         From: Monument Name     : GPS METS
               DOMES Number      : 10503S011
               CDP Number        : N.A.
         To:   Monument Name     : VLBI METS
               DOMES Number      : 10503M002
               CDP Number        : 7601
         Differential Components (ITRS)
           dx                 [m]: -1918.178 +- 0.005
           dy                 [m]: -1548.001 +- 0.005
           dz                 [m]: 1324.664 +- 0.005
           Date Measured         : 1993-12-29
           Determined by         : GPS
         Additional Information  : 

13.03.02.01 Eccentricities Between Other Monuments on Site

         From: Monument Name     : GPS METS
               DOMES Number      : 10503S011
               CDP Number        : N.A.
         To:   Monument Name     : DORIS META
               DOMES Number      : 10503S013
               CDP Number        : N.A.
         Differential Components (ITRS)
           dx                 [m]: -1929.787 +- 0.005
           dy                 [m]: -1532.781 +- 0.005
           dz                 [m]: 1330.896 +- 0.005
           Date Measured         : 1993-12-29
           Determined by         : GPS + survey
         Additional Information  : 

13.03.03.01 Eccentricities Between Other Monuments on Site

         From: Monument Name     : GPS METS
               DOMES Number      : 10503S011
               CDP Number        : N.A.
         To:   Monument Name     : SLR IAR
               DOMES Number      : 10503S001
               CDP Number        : 7805
         Differential Components (ITRS)
           dx                 [m]: 24.471 +- 0.005
           dy                 [m]: -35.528 +- 0.005
           dz                 [m]: -23.274 +- 0.005
           Date Measured         : 1994-10-15
           Determined by         : GPS
         Additional Information  : old laser

13.03.04.01 Eccentricities Between Other Monuments on Site

         From: Monument Name     : GPS METS
               DOMES Number      : 10503S011
               CDP Number        : N.A.
         To:   Monument Name     : GPS/GLONASS METZ
               DOMES Number      : 10503M005
               CDP Number        : N.A.
         Differential Components (ITRS)
           dx                 [m]: -0.951 +- 0.001
           dy                 [m]: 0.205 +- 0.001
           dz                 [m]: 0.398 +- 0.001
           Date Measured         : 1998-10-12
           Determined by         : GPS
         Additional Information  : 


14.   Local Events Possibly Affecting Computed Position

14.01 Date                       : 
      Event                      : 
      Additional Information     : 


15.   On-Site, Point of Contact Agency Information

      Agency                     : Finnish Geospatial Research Institute,
                                 : National Land Survey of Finland
      Mailing Address            : Geodeetinrinne 2,
                                 : FIN-02430 Masala, Finland
      Website                    : 
      Primary Contact
        Contact Name             : Arttu Raja-Halli
        Telephone (primary)      : +358 504118882
        Telephone (secondary)    : 
        Fax                      : 
        E-mail                   : arttu.raja-halli@nls.fi
      Secondary Contact
        Contact Name             : Jyri Naeraenen
        Telephone (primary)      : 
        Telephone (secondary)    : 
        Fax                      : 
        E-mail                   : jyri.naranen@nls.fi
      Tertiary Contact
        Contact Name             : 
        Telephone (primary)      : 
        Telephone (secondary)    : 
        Fax                      : 
        E-mail                   : 
      Additional Information     : 


16.   Responsible Agency (if different from 15.)

      Agency                     : 
      Mailing Address            : 
      Primary Contact
        Contact Name             : 
        Telephone (primary)      : 
        Telephone (secondary)    : 
        Fax                      : 
        E-mail                   : 
      Secondary Contact
        Contact Name             : 
        Telephone (primary)      : 
        Telephone (secondary)    : 
        Fax                      : 
        E-mail                   : 
      Additional Information     : 


17.   More Information

      URL for More Information   : http://maanmittauslaitos.fi/en/research/
                                 : research/metsahovi-geodetic-research-station
      Hardcopy on File
        Site Map                 : NO
        Site Diagram             : NO
        Horizon Mask             : NO
        Monument Description     : NO
        Site Pictures            : NO
      Additional Information     :