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Metsahovi2: Site Log
Instructions and Update Site Log
You can use the hyperlinks to quickly get to the section of interest or you can scroll down to read them all.
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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