Graz
SLR System Configuration Definition
SYSTEM CONFIGURATION DEFINITION
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SYSTEM NAME: GRAZ
PAD ID NO.: 7839
ADDRESS: Observatory Lustbuehel, Lustbuehelstr.46, A-8042 GRAZ
CONTACT: Dr. Georg KIRCHNER
PHONE: +43-316-472231
FAX: +43-316-462678
E-MAIL: kirchner@flubiw01.tu-graz.ac.at
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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 / / / / /
External / Yes / 1 - a few PE(*) /940511 / /
* Kept within return rates lower than 70% from the target; the signal
strengths is not measured directly, but is easily kept in the same range
as from satellites by looking at and recording all SemiTrain Echoes.
SECTION 1.2 ADVANCED SYSTEM RANGING FEATURES
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TARGET /CURRENT RANGING / RANGING / DATE / FUTURE /
/CAPABILITY / PHOTOELECTRON / / RANGING /
/ CAPABILITY/
===============================================================================
Two-Color Capability/ 3-colors / 1 - 30 /19940511/ * /
Manual Track / / / / /
Tracking:
Semi-Automated / yes / / / /
Fully Automated / tested / / / ** /
* Multi-Color demonstrated, to most satellites; routine operation preparation
on-going
** Fully automatic tracking / Return identifying etc. in test phase
Section 1.3 System Ranging Targets
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TARGET /CURRENT RANGING / RANGING / DATE / FUTURE /
/CAPABILITY / PHOTOELECTON / / RANGING /
/ CAPABILITY/
==============================================================================
STARLETTE / Day-Night / / / /
STELLA / Day-Night / / / /
ERS-1 / Day-Night / / / /
AJISAI / Day-Night / / / /
TOPEX / Day-Night / / / /
LAGEOS 1 / Day-Night / / / /
LAGEOS 2 / Day-Night / / / /
ETALON 1 / Day-Night / / / /
ETALON 2 / Day-Night / / / /
GLONASS 3 / Not tried / / / /
GPS-3,5 / Night / / / /
Geosynchronous / Night / / / /
Satellite / / / / /
Moon / No / / / /
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 /
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Type of Laser Medium / Nd:YAG / / / /
Energy / Pulse (mJ) / 3 mJ; 25 mJ/SemiTrain/ / / /
Pulsewidth (ps) / 35 ps/ / / /
Beam Size / 8 cm / / / /
Beam Divergence(Half Angle) 25 microrad/ / / /
Beam Divergence Control / 25 - 1000 micror/ / / /
Amplitude Stability / 10 % %/ / / /
Timing Stability / ??? ns/ / / /
Transverse Mode Structure / cm/ / / /
Ranging Wavelength(s) / 532/683/435 nm/ / / /
Repetition Rate / 10 Hz 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 /
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Telescope Type / Cassegrain / / / /
Biaxial Telescope / / / / /
Monoaxial Telescope / / / / /
Mount Type / Az/El / / / /
Field of View / 150-1500 microrad/ / / /
Focal Length / 5.45 m / / / /
Magnification / / / / /
Pointing Accuracy / 5 arcsecs / / / /
After STARCAL
Satellite:
Common T/R Optical Path / / / / /
Separate T/R Optical Path / yes / / / /
Calibration:
Common T/R Optical Path / / / / /
Separate T/R Optical Path / yes / / / /
Orthogonality of Axes / / / / /
Wobble on Each Axis:
Elevation / 2 arcsecs / / / /
Azimuth / 2 arcsecs / / / /
Elevation / / / / /
- Range -5 to 185 Degree
- Encoder Resolution / 0.0001 Degrees / / / /
- Position Jitter / / / / /
- Maximum EL Velocity / 5 Deg/sec / / / /
- Maximum EL Acceleration/ 2 Deg/Sec2 / / / /
Azimuth / / / / /
- Range / +- 270 Degrees / / / /
- Encoder Resolution / 0.0001 Degrees / / / /
- Position Jitter / / / / /
- Maximum Az Velocity / 20 Deg/sec / / / /
- Maximum Az Acceleration/ 5 Deg/sec2 / / / /
PRIMARY MIRROR / / / / /
Type / elliptical / / / /
Clear Aperture (CA) / 20 inch / / / /
Focal Length / f/2 / / / /
Optical Coating / Al/SiO2 / / / /
SECONDARY MIRROR / / / / /
Type / spherical / / / /
Clear Aperture (CA) / / / / /
Focal Length / / / / /
Optical Coating / Al/SiO2 / / / /
TERTIARY MIRROR / / / / /
Type / / / / /
Clear Aperture / / / / /
COUDE MIRRORS / / / / /
Type / / / / /
Clear Aperture / 5 cm / / / /
Optical Coating / Special/MultiColr/ / / /
SECTION 2.3 OPTICAL CONFIGURATION CATAGORY
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TRANSMIT/ RECEIVE OPTICS / SPECIFICATIONS / DATE / FUTURE / APPROX./
/ / / CHANGES / DATE /
================================================================================
T/R Coupling Scheme:
- Type / / / / /
- Coupling Efficiency / / / / /
Spatial Filter: / / / / /
- Field of View / 150-1500 microrad/ / / /
Band-Pass Filter: / / / / /
- Type / interference / / / /
- Bandwidth / 0.15 nm / / / /
- Blocking Bandwidth / no;add.dicroic / / / /
-Transmission Efficiency / 45% / / / /
Receive Signal Amplitude
Control Mechanism / divergence, laser/ / / /
power; feedback
via SemiTrain and
PrePulses
SECTION 2.4 TRANSMIT/ RECEIVE (T/R) ELECTRONICS CONFIGURATION SECTION
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T/R ELECTRONICS / SPECIFICATIONS / DATE / FUTURE / APPROX./
/ / / CHANGES / DATE /
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Transmit Detector: Fast Diode
- Quantum Efficiency / ?? / / / /
- Gain / ?? / / / /
- Bandwidth / ?? / / / /
- Jitter (single pe) / .LT. 10 ps / / / /
- Impulse Response
- Pulse Width / / / / /
- Rise Time / .LT. 300 ps / / / /
- Dynamic Range / / / / /
Receive Detector(s) / SPADs / / / /
- Quantum Efficiency / 20 percent / / / /
- Gain / 10E8 / / / /
- Bandwidth / / / / /
- Jitter (single pe) / 20 ps / / / /
- Impulse Response
- Pulse Width .LT. 500 ps
- Rise Time .LT. 300 ps
- Dynamic Range / Single PE / / / /
Amplifier / None / / / /
- Type: / / / / /
- Bandwidth: / / / / /
- Jitter: / / / / /
- Dynamic Range / / / / /
TARGET IMAGING Capability / Yes / / / /
- Type of camera / ISIT / / / /
- Gain / / / / /
- Sensitivity / Geostation.Sats / / / /
Signal Processing Technique/ / / / /
- Type of Device / / / / /
- CFD: NO
- Length of External
- No CFD necessary;
Delay Cable
- Bandwidth / / / / /
- Dynamic Range(pe) / / / / /
- Jitter / / / / /
EVENT TIMER or TIME OF FLIGHT MEASUREMENT? ==> HP5370A, adapted and improved
- Clock Frequency / / / / /
- Number of Channels / / / / /
- Number of Verniers / / / / /
- Minimum Dead Time / / / / /
- Time Resolution / / / / /
- Aggregate Jitter / / / / /
Amplitude Measurement / NA / / / /
- Type of Device / / / / /
- Bandwidth / / / / /
- Accuracy / / / / /
- Part of Data Stream? / / / / /
System Delay Calibration / External Pre/Pos/ / / /
Internal Calibration Capability: Not Yet; planned in next year
Location of Target(s) / / / / /
Range of Target(s) / / / / /
External Calibration Capability
Location of Target(s) / about 400 m / / / /
Range(s) of Target(s) / / / / /
SECTION 2.6 TIMING CONFIGURATION SECTION
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TIMING / SPECIFICATIONS / DATE / FUTURE / APPROX./
/ / / CHANGES / DATE /
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Frequency Standard(s) used/ UTC/(TUG) / / / /
Frequencies / 10/5/1 MHz, 1 pps, 0.1/1/10 kHz / /
Short-Term Stability / Cesiums, improved with Quarz / / /
Long-Term Stability / Cesiums / / / /
Epoch Time Measurement: / / / / /
- Type of Device / HP5328 Unversal Counter / / /
- Resolution / 10 ns / / / /
- Timing Closure / versus Cesium/UTC/ / / /
SECTION 2.7 METEOROLOGICAL SENSORS CONFIGURATION CATAGORY
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METEOROLOGICAL SENSORS / SPECIFICATIONS / DATE / FUTURE / APPROX./
/ / / CHANGES / DATE /
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Thermometer / Built in Graz / / / /
Type / Semicond. / / / /
Accuracy (calibrated) / 0.2 Degree / / / /
Resolution / 0.1 Degree / / / /
Range / -40 to 70 / / / /
Barometric Pressure System/ Built in Graz / / / /
Type / Piezo / / / /
Accuracy (calibrated) / 0.3 mb / / / /
Range / 800 to 1100 mb / / / /
Relative Humidity System / Built in Graz / / / /
Type / Ceramic / / / /
System Accuracy / 10 percent / / / /
Resolution / 1 percent / / / /
System Range / 0 to 100 / / / /
Wind Measurement System / No / / / /
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/ DATE / FUTURE / APPROX.
/ CHANGES/ DATE
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Wild Distomat / 1 mm / Aug. 91 / /
/ / / /
/ / / /
SECTION 4.2 SURVEY ANALYSIS
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SURVEY ANALYSIS TECHNIQUE
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* (PLEASE GIVE DESCRIPTION OF THE TECHNIQUE USED)
*
*
SECTION 4.3 SURVEY CALIBRATION TARGET
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TARGET / SPECIFICATIONS / DATE / FUTURE / APPROX.
/ / / CHANGES / DATE
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TARGET A / Routine Cal Target / / /
TYPE / Flat Board / Aug. 91 / /
RANGE ACCURACY / / / /
AZIMUTH / 35ø0280 +- 0ø0001 / Sept. 81 / /
ELEVATION / 357ø6528 +- 0ø0001 / Sept. 81 / /
RANGE PRECISION/ / / /
RANGE / 385.802 m / / /
SHORT TERM
STABILITY / few mm / / /
LONG TERM
STABILITY / few mm / / /
TARGET B / (For Tests only) / / /
TYPE / Flat, small Retro-Array / / /
RANGE ACCURACY / / / /
AZIMUTH / 53ø9530 / / /
ELEVATION / 0ø7380 / / /
RANGE PRECISION/ / / /
RANGE / 6027.300 m / / /
SHORT TERM
STABILITY / few mm / / /
LONG TERM
STABILITY / few mm / / /
TARGET C / / / /
TYPE / / / /
RANGE ACCURACY / / / /
AZIMUTH / / / /
ELEVATION / / / /
RANGE PRECISION/ / / /
RANGE / / / /
SHORT TERM
STABILITY / / / /
LONG TERM
STABILITY / / / /
SECTION 4.4 ECCENTRICITY DETERMINATION
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/ NORTH / EAST / UP
===============================================================================
Mean Value / / /
Accuracy / / /
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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DEVICE/ FEATURE /FREQUENCY OF CALIBRATION / DATE /FUTURE CHANGE/DATE
===============================================================================
Event Timer / N.A. / / /
Time of Flight Devices / in case of problems / / /
Discriminator / N.A. / / /
Pressure Sensor / 12 months / / /
Temperature Sensor / in case of problems / / /
Timing System / conn. to UTC-TUG / / /
System Delay / Pre/Post cal / / /
SECTION 6.0 SYSTEM TIMING CLOSURE CONFIGURATION
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SECTION 6.1 TIMING CLOSURE
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TIMING FEATURE /SPECIFICATIONS / DATE / FUTURE / APPROX.
/ / / CHANGES / DATE
===============================================================================
Reference Time: /UTC-TUG: 1pps, 10 MHz/ / /
Accuracy of Timing: / / / /
Modeling of Time Drift:/ For each pass; / / /
SECTION 7.0 SYSTEM DATA ANALYSIS CONFIGURATION / CAPABILITY
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SECTION 7.1 DATA ANALYSIS
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TIMING FEATURE / STATUS / DATE / FUTURE / APPROX.
/ / / CHANGES / DATE
=============================================================================
Transmit Signal Amplitudes:/ No / / /
Receive Signal Amplitudes: / N.A. (SPE) / / /
Timing / Yes / / /
Instrument Non-Linearities / NA / / /
Geometric Corrections / NA / / /
Atmosphere / Yes / / /
SECTION 7.2 System Delay Computation:
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SYSTEM DELAY COMPUTATION FREQUENCY / ( YES : NO ) /ADDITIONAL INFORMATION
===============================================================================
Shot by Shot: / NO /
Burst or Short Time Aggregate: / NO /
Aggregate: / YES /
SECTION 7.3 DATA ANALYSIS TECHNIQUES / CAPABILITIES
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TECHNIQUE / STATUS / DATE / FUTURE / APPROX.
/ / / CHANGES / DATE
===============================================================================
Normal Point Computation: On Site, on PC, with graphic control
Fitting Routine (Algorithms): Residuals from IRVs, Polynomials to residuals
Noise Filtering and Editing Procedures: SemiTrain folding, Noise, 2.5 Sigma
Data Quality Control Procedures: Yes; all steps/results stored in LOG-Files
System Computational Capability: All calcs: SemiTrain, MultiColor, Delays, etc
SECTION 8.0 SYSTEM ATMOSPHERIC TECHNIQUES
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SECTION 8.1 ATMOSPHERIC MODEL
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8.1 Atmospheric Model Used: Marini/Murray
* ( PLEASE DESCRIBE THE MODEL IN AS MUCH DETAIL AS POSSIBLE )
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 /
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Temporal Stability / 2 mm / / / /
Wavefront Distortion / ------ / / / /
Signal Strength Dependence / 3 mm / / / /
Calibration Path / 3 mm / / / /
Mount Eccentricities / / / / /
Meteorological Measurement / / / / /
Temperature / 0.1 Deg / / / /
Pressure / 0.1 mB / / / /
Event Timer / ------- / / / /
Time of Flight Measurement / 15 ps / / / /
Epoch Time Measurement / 10 ns / / / /
Data Analysis / / / / /
Normal Point Computation / < 1 mm / / / /
System Delay Computation / < 1 mm / / / /
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