International Laser Ranging Service

Metsahovi2: Site Log

Instructions and Update Site Log

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Section: 0. Form
Section: 1. Identification of the Ranging System Reference Point (SRP)
Section: 2. Site Location Information
Section: 3. General System Information
Section: 4. Telescope Information
Section: 5. Laser System Information
Section: 6. Receiver System
Section: 7. Tracking Capabilities
Section: 8. Calibration
Section: 9. Time and Frequency Standards
Section: 10. Preprocessing Information
Section: 11. Aircraft Detection
Section: 12. Meteorological Instrumentation
Section: 13. Local Ties, Eccentricities, and Collocation Information
Section: 14. Local Events Possibly Affecting Computed Position
Section: 15. On-Site, Point of Contact Agency Information
Section: 16. Responsible Agency (if different from 15.)
Section: 17. More Information

 
       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          : 
 
 
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  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.
 
 
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  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
 
 
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  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     : 
 
 
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  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     : 
 
 
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  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
 
 
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  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  : 
 
 
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  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
 
 
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  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`
 
 
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  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  : 
 
 
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 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
 
 
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 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     : 
 
 
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 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  : 
 
 
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 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  : 
 
 
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 14.   Local Events Possibly Affecting Computed Position
 
 14.01 Date                       : 
       Event                      : 
       Additional Information     : 
 
 
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 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     : 
 
 
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 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     : 
 
 
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 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     : 
 
 
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