Metsahovi
SLR System Configuration Definition
SYSTEM CONFIGURATION DEFINITION
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SYSTEM NAME: METSAHOVI
PAD ID NO.: 7805
ADDRESS: FINNISH GEODETIC INSTITUTE, METSAHOVI GEODETIC OBSERVATORY
ILMALANKATU 1A, 00240 HELSINKI, FINLAND
CONTACT: MATTI PAUNONEN
PHONE: 358-0-264994
FAX: 358-0-264995
E-MAIL: GEODEET@CSC.FI
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SECTION 1.0 - SYSTEM RANGING CAPABILITY
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SECTION 1.1 SYSTEM RANGING FEATURES
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FEATURES /CURRENT RANGING / RANGING / DATE / FUTURE /
/CAPABILITY / PHOTOELECTRON / / RANGING /
/ CAPABILITY/
===============================================================================
Calibration:
Internal / NO / / / /
External / YES / 25-2500 / 5-20-94/ NA /
* Internal Calibration: Refers to the capability for ranging to a
target within the system.
* External Calibration: Refers to the capability for ranging to
terrestrial targets.
SECTION 1.2 ADVANCED SYSTEM RANGING FEATURES
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TARGET /CURRENT RANGING / RANGING / DATE / FUTURE /
/CAPABILITY / PHOTOELECTRON / / RANGING /
/ CAPABILITY/
===============================================================================
Two-Color Capability/ NO / / / /
Manual Track / NO / / / /
Tracking:
Semi-Automated / YES / 25-2500 /5-20-94 / /
Fully Automated / / / / /
Section 1.3 System Ranging Targets
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TARGET /CURRENT RANGING / RANGING / DATE / FUTURE /
/CAPABILITY / PHOTOELECTON / / RANGING /
/ CAPABILITY/
==============================================================================
STARLETTE / YES / 25- /5-20-94 /
STELLA / YES / 25- /5-20-94 /
ERS-1 / YES / 25- /5-20-94 /
AJISAI / YES / 25- /5-20-94 /
TOPEX / YES / 25- /5-20-94 /
LAGEOS 1 / YES / 25- /5-20-94 / 1
LAGEOS 2 / YES / 25- /5-20-94 / 1
ETALON 1 / YES / 25- /5-20-94 / 1
ETALON 2 / YES / 25- /5-20-94 / 1
GLONASS 3 / NOT TESTED / / / 1
GPS-3,5 / NOT TESTED / / / 1
Geosynchronous / NO / / /
Satellite / / / /
Moon / NO / / / NA
SECTION 2.0 - HARDWARE CONFIGURATION / CAPABILITY
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SECTION 2.1 LASER CONFIGURATION CATEGORY
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LASER / SPECIFICATIONS / DATE / FUTURE / APPROX./
/ / / CHANGES / DATE /
================================================================================
Type of Laser Medium / ND:YAG / 5-20-94 / / /
Energy / Pulse (mJ) / 50 mJ/ 5-20-94 / / /
Pulsewidth (ps) / 3000 ps/ 8-20-94 / / /
Beam Size / 60 MM / 5-20-94 / / /
Beam Divergence(Half Angle) 150 microrad/ 5-20-94 / / /
Beam Divergence Control / NA / 5-20-94 / / /
Amplitude Stability / 10 %/ 5-20-94 / / /
Timing Stability / 3000 ns/ 5-20-94 / / /
Transverse Mode Structure / SINGLE MODE cm/ 5-20-94 / / /
Ranging Wavelength(s) / 532 nm/ 5-20-94 / / /
Repetition Rate / 0.5 Hz/ / / /
Other / / / / /
SECTION 2.2 MOUNT CONFIGURATION CATAGORY
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SECTION 2.2.1
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TELESCOPE/ MOUNT / SPECIFICATIONS / DATE / FUTURE / APPROX./
/ / / CHANGES / DATE /
================================================================================
Telescope Type / REFLECTOR / 5-20-94 / / /
Biaxial Telescope / YES / 5-20-94 / / /
Monoaxial Telescope / NO / / / /
Mount Type / EQUATORIAL / 5-20-94 / AZIMUTHAL / -95 /
Field of View / 1.5 mrad / 5-20-94 / / /
Focal Length / 1730 mm / 5-20-94 / / /
Magnification / / / / /
Pointing Accuracy / 300 urad / 5-20-94 / / /
After STARCAL
Satellite:
Common T/R Optical Path / NO / / / /
Separate T/R Optical Path / YES / 5-20-94 / / /
Calibration:
Common T/R Optical Path / / / / /
Separate T/R Optical Path / YES / 5-20-94 / / /
Orthogonality of Axes / 300 urad / 5-20-94 / / /
Wobble on Each Axis:
Elevation / NA / / / /
Azimuth / NA / / / /
Elevation / / / / /
- Range / 95 DEG / 5-20-94 / /
- Encoder Resolution / 6 ARCSEC (STEP) / 5-20-94 / / /
- Position Jitter / 30 " / 5-20-94 / / /
- Maximum EL Velocity / 1 DEG/S / 5-20-94 / / /
- Maximum EL Acceleration/ 1.5 DEG/S/S / / / /
Azimuth / / / / /
- Range / 540 DEG. / 5-20-94 / / /
- Encoder Resolution / 6 ARCSEC(STEP) / / / /
- Position Jitter / 30 ARCSEC / / / /
- Maximum Az Velocity / 1 DEG/S / / / /
- Maximum Az Acceleration/ 1.5 DEG/S/S / / / /
PRIMARY MIRROR / / / / /
Type / PARABOLIC / 5-20-94 / / /
Clear Aperture (CA) / 630 MM / / 1000 MM / -94 /
Focal Length / 1730 MM / / / /
Optical Coating / SIO2 / / / /
SECONDARY MIRROR / NA / / / /
Type / / / / /
Clear Aperture (CA) / / / / /
Focal Length / / / / /
Optical Coating / / / / /
TERTIARY MIRROR / NA / / / /
Type / / / / /
Clear Aperture / / / / /
COUDE MIRRORS / / / / /
Type / NA / / / /
Clear Aperture / / / / /
Optical Coating / / / / /
SECTION 2.3 OPTICAL CONFIGURATION CATAGORY
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TRANSMIT/ RECEIVE OPTICS / SPECIFICATIONS / DATE / FUTURE / APPROX./
/ / / CHANGES / DATE /
================================================================================
T/R Coupling Scheme:
- Type / DIRECT / / / /
- Coupling Efficiency / 90% / / / /
Spatial Filter: / / / / /
- Field of View / 1.5 MRAD / 5-20-94 / / /
Band-Pass Filter: / YES / 5-20-94 / / /
- Type / INTERFERENCE / 5-20-94 / / /
- Bandwidth / 3 NM / 5-20-94 / / /
- Blocking Bandwidth / X-RAY TO FIR / / / /
-Transmission Efficiency / 50 % / 5-20-94 / / /
Receive Signal Amplitude
Control Mechanism / PMT VOLTAGE / 5-20-94 / / /
SECTION 2.4 TRANSMIT/ RECEIVE (T/R) ELECTRONICS CONFIGURATION SECTION
=====================================================================
T/R ELECTRONICS / SPECIFICATIONS / DATE / FUTURE / APPROX./
/ / / CHANGES / DATE /
================================================================================
Transmit Detector: PHOTODIODE
- Quantum Efficiency / 30% / 5-20-94 / / /
- Gain / 1 / 5-20-94 / / /
- Bandwidth / 250 MHz / 5-20-94 / / /
- Jitter (single pe) / NA / 5-20-94 / / /
- Impulse Response
- Pulse Width / 3 ns / 5-20-94 / / /
- Rise Time / 1.5 ns / 5-20-94 / / /
- Dynamic Range / 100 / 5-20-94 / / /
Receive Detector(s) / PMT / / / /
- Quantum Efficiency / 8% (OR LESS) / 8-20-94 / / /
- Gain / 10E7 / 5-20-94 / / /
- Bandwidth / 150 MHz / 5-20-94 / / /
- Jitter (single pe) / 500 ps / 5-20-94 / / /
- Impulse Response Pulse Width 4000 ps / 5-20-94 /
- Dynamic Range / 100 / 5-20-94 / / /
Amplifier / / / / /
- Type: / NA / / / /
- Bandwidth: / NA / / / /
- Jitter: / NA / / / /
- Dynamic Range / NA / / / /
TARGET IMAGING Capability / / / / /
- Type of camera / CCD, INTENSIFIER/ 5-20-94 / / /
- Gain / 1, 10000 / / / /
- Sensitivity / / / / /
Signal Processing Technique/ / / / /
- Type of Device / / 5-20-94 / / /
- CFD: / TENNELEC 454 / 5-20-94 /
- Length of External
Delay Cable / 530 mm /
- Bandwidth / 200 MHz / / / /
- Dynamic Range(pe) / 25-2500 / / / /
- Jitter / NA / / / /
EVENT TIMER or TIME OF FLIGHT MEASUREMENT? TOF (HP 5370B)
- Clock Frequency / 5 MHz ext. / 5-20-94 / / /
- Number of Channels / 2 / / / /
- Number of Verniers / 2 / / / /
- Minimum Dead Time / 0 / / / /
- Time Resolution / 20 ps / / / /
- Aggregate Jitter / 60 ps / / / /
Amplitude Measurement / YES / / / /
- Type of Device / DIG. OSCILLOSC./ / / /
- Bandwidth / 200 MHz / / / /
- Accuracy / / / / /
- Part of Data Stream? / NOT YET / / / /
System Delay Calibration / EXTERNAL / / / /
Internal Calibration Capability
Location of Target(s) / / / / /
Range of Target(s) / / / / /
External Calibration Capability
Location of Target(s) / HORIZONTAL / / / /
Range(s) of Target(s) / 337 m / / / /
SECTION 2.6 TIMING CONFIGURATION SECTION
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TIMING / SPECIFICATIONS / DATE / FUTURE / APPROX./
/ / / CHANGES / DATE /
================================================================================
Frequency Standard(s) used/ H-MASER / 5-20-94 / / /
Frequencies / 5 MHz / / / /
Short-Term Stability / NA / / / /
Long-Term Stability /DRIFT LT.100 ns/D / / / /
Epoch Time Measurement: / / / / /
- Type of Device / GPS EVENT TIMER / / / /
- Resolution / 100 ns / / / /
- Timing Closure / TTL PULSE / / / /
SECTION 2.7 METEOROLOGICAL SENSORS CONFIGURATION CATAGORY
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METEOROLOGICAL SENSORS / SPECIFICATIONS / DATE / FUTURE / APPROX./
/ / / CHANGES / DATE /
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Thermometer / PSYKROMETER, DRY / 5-20-94 / / /
Type / LAMBRECHT 320026 / / / /
Accuracy (calibrated) / 0.5 DEG. C / / / /
Resolution / 0.2 DEG. C / / / /
Range / -20...+60 DEG. C / / / /
Barometric Pressure System/ ALTIMETER / / / /
Type / THOMMEN 3B4 / / / /
Accuracy (calibrated) / 0.5 hPa / / / /
Range / 890...1060 hPa / / / /
Relative Humidity System / PSYKROMETER,WET/D/ / / /
Type / LAMBRECHT 320026 / / / /
System Accuracy / 5% / / / /
Resolution / 1% / / / /
System Range / 5%-100% / / / /
Wind Measurement System / NA / / / /
Type / / / / /
Type: / / / / /
Sensor / / / / /
Range / / / / /
Accuracy / / / / /
Resolution / / / / /
Threshold / / / / /
SECTION 4.0 SURVEY MEASUREMENT CONFIGURATION / CAPABILITY
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SECTION 4.1 SURVEY MEASUREMENTS
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SURVEYING INSTRUMENT / ACCURACY / PRECISION
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WILD T2002 TACHYMETER / 1 mm /
ZEISS Ni 002 LEVEL / 0.5 mm /
ASHTECH P-12 GPS / 5 mm /
SECTION 4.2 SURVEY ANALYSIS
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SURVEY ANALYSIS TECHNIQUE
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* (PLEASE GIVE DESCRIPTION OF THE TECHNIQUE USED)
* Range and angles measured accurately by normal precise geodetic means
* (tachymeter, theodolites). Height differences checked by precise levelling.
Calculations checked by GPS measurements. Errors cannot be more than 5 mm.
SECTION 4.3 SURVEY CALIBRATION TARGET
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External calibration target for the laser
TARGET / TYPE / RANGE / AZ / EL / RANGE / RANGE / SHORT / LONG
/ / ACCURACY/ / / PRECISION / / TERM / TERM
/ / / / / / / STABILITY / STABILITY
===============================================================================
1 /FLAT / 5 mm /183.1 /-1.32/ 1 mm /337.909/ 1 mm / 5 mm
2 / / / / / / / /
3 / / / / / / / /
4 / / / / / / / /
SECTION 4.4 ECCENTRICITY DETERMINATION
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From the station marker SF348 to the reference point of SLR 7805
(cross point of the axes)
/ NORTH / EAST / UP
===============================================================================
Mean Value / -17.452 m / 3.555 m / 5.223 m
Accuracy / 0.002 m / 0.002 m / 0.001 m
Precision / / /
Short Term Stability / / /
Long Term Stability / / /
SECTION 5.0 CALIBRATION TECHNIQUE / CAPABILITY
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SECTION 5.1 CALIBRATION DEVICES AND FREQUENCY
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===============================================================================
// FREQUENCY
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DEVICE/ FEATURE / SATELLITE / PASS / DAY / MONTH / YEAR
===============================================================================
Event Timer / / / / /
Time of Flight Devices / / / / /
Discriminator / / / / /
Pressure Sensor / / / / / YES
Temperature Sensor / / / / / YES
Timing System / GPS / / / /
System Delay / / YES / / /
SECTION 6.0 SYSTEM TIMING CLOSURE CONFIGURATION
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SECTION 6.1 TIMING CLOSURE
===========================
Reference Time: GPS
Accuracy of Timing: 300 NS
Modeling of Time Drift: NA
SECTION 7.0 SYSTEM DATA ANALYSIS CONFIGURATION / CAPABILITY
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SECTION 7.1 DATA ANALYSIS
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DATA CORRECTIONS ( YES : NO ) / ADDITIONAL INFORMATION
=============================================================================
7.1.1 Transmit Signal Amplitudes: NO /
7.1.2 Receive Signal Amplitudes: NO /
7.1.3 Timing NO /
7.1.4 Instrument Non-Linearities NO /
7.1.5 Geometric Corrections NO /
7.1.6 Atmosphere NO / SINCE DEC. 94
SECTION 7.2 System Delay Computation:
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SYSTEM DELAY COMPUTATION FREQUENCY / ( YES : NO ) /ADDITIONAL INFORMATION
===============================================================================
7.2.1 Shot by Shot: / NO /
7.2.2 Burst or Short Time Aggregate: / /
7.2.3 Aggregate: / /
SECTION 7.3 DATA ANALYSIS TECHNIQUES / CAPABILITIES
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7.3.1 Normal Point Computation: YES (IN QUICK-LOOK)
7.3.2 Fitting Routine (Algorithms): HERSTMONCEAUX PROGRAM
7.3.3 Noise Filtering and Editing Procedures: MEDIAN FIT TO O-C
DEVIATIONS USING POLYNOMIALS,
2.5 SIGMA REJECTION LIMIT,
EACH PASS CHECKED . ALSO
KEPLER ORBIT FITTING USED.
7.3.4 Data Quality Control Procedures: PASS RMS CONTROLLED
7.3.5 System Computational Capability: 486 PC, 286 PC IN TRACKING
SECTION 8.0 SYSTEM ATMOSPHERIC TECHNIQUES
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SECTION 8.1 ATMOSPHERIC MODEL
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8.1 Atmospheric Model Used:
* ( PLEASE DESCRIBE THE MODEL IN AS MUCH DETAIL AS POSSIBLE )
DATA NOT CORRECTED FOR REFRACTION
SECTION 9.0 SYSTEM PERFORMANCE CHARACTERISTICS
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SECTION 9.1 RANGING SYSTEM ERRORS
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RANGING SYSTEM ERRORS / ACCURACY / 1 SIGMA / PEAK - PEAK / DATE /
================================================================================
Temporal Stability / / / / 5-27-94 /
Wavefront Distortion / NA / NA / / /
Signal Strength Dependence / NA / / / /
Calibration Path / 5 mm / / / /
Mount Eccentricities / 5 mm / / / /
Meteorological Measurement / 5 mm / / / /
Event Timer / - / - / / /
Time of Flight Measurement / / 700 ps / / /
Epoch Time Measurement / 300 ns / 100 ns / / /
Data Analysis / / / / /
Normal Point Computation / / / / /
System Delay Computation / / 100 PS / / /
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