SALRO
SLR System Configuration Definition
SYSTEM CONFIGURATION DEFINITION
SYSTEM NAME: SALRO
PAD ID NO.: 7920
ADDRESS: GGAO
CONTACT: John Guilfoyle
PHONE: (301) 286 3886
FAX: (301) 498 1062
E-MAIL: SALRO.GGAO.NASA.GOV
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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 /
/ CAPABILITY / PHOTOELECTRON /
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CALIBRATION:
Internal / with MCP only / 1 - 50 pe /
External / YES / 1 pe /
SECTION 1.2 ADVANCED SYSTEM RANGING FEATURES
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FEATURES / CURRENT RANGING / RANGING /
/ CAPABILITY / PHOTOELECTRON /
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Two-Color Capability / NO / /
Manual Track / Yes, with handpaddle / /
Semi-Automated / YES / /
Fully Automated / NO / /
SECTION 1.3 RANGING TARGETS
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FEATURES / CURRENT RANGING / RANGING /
/ CAPABILITY / PHOTOELECTRON /
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STARLETTE / yes / 1 pe (SPAD) /
STELLA / yes / 1 pe (SPAD) /
ERS-1 / yes / 1 pe (SPAD) /
AJISAI / yes / 1 pe (SPAD) /
TOPEX / yes / 1 pe (SPAD) /
LAGEOS 1 / yes / 1 pe (SPAD) /
LAGEOS 2 / yes / 1 pe (SPAD) /
ETALON 1 / yes / 1 pe (SPAD) /
ETALON 2 / yes / 1 pe (SPAD) /
GLONASS 3 / untried /
GPS-3,5 / yes / 1 pe (SPAD) /
Geosynchronous
Satellite / yes / 1 pe (SPAD) /
Moon / untried /
SECTION 2.0 - HARDWARE CONFIGURATION / CAPABILITY
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SECTION 2.1 LASER CONFIGURATION CATEGORY
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LASER / SPECIFICATIONS
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Type of Laser Medium / ND-YAG
Energy / Pulse (mJ) / 100 mJ
Pulsewidth (ps) / 100 ps
Beam Size / 0.75 m
Beam Divergence (Half Angle) / 400 microrad
Beam Divergence Control / BE on laser table
Amplitude Stability / 7% of mean
Timing Stability N/A
Transverse Mode Structure / TM00
Ranging Wavelength (s) / 532nm
Repetition Rate / 10Hz
Other / Active/Active, simmered
SECTION 2.2 TELESCOPE CONFIGURATION CATAGORY
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SECTION 2.2.1 MECHANICAL SPECIFICATIONS
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TELESCOPE/ MOUNT / SPECIFICATION
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Telescope Type / Contraves Inc. .75m
Biaxial Telescope / yes
Monoaxial Telescope / no
Mount Type / alt/az
Field of view / 2 arcmin
Fccal Length / afocal
Magnification / X 37.5 (at receiver)
Pointing Accuracy / approx 1.5 arcsec (After STARCAL)
Satellite:
Common T/R Optical Path / yes
Separate T/R Optical Path / no
Calibration:
Common T/R Optical Path / yes
Separate T/R Optical Path / no
Orthogonality of Axes / 0.1 arcsec
Wobble: Elevation / 1 arcsec RMS
Azimuth / 1 arcsec RMS
Elevation
- Range / -5 to 185 degrees
- Encoder Resolution / 0.3 arcsec
- Position Jitter / 0.3 arcsec
- Maximum EL velocity / 5 degrees/sec
- Maxi-um EL Acceleration / 2 degrees/sec/sec
Azimuth
- Range / ( 340 degrees
- Encoder Resolution / 0.3 arcsec
- Position Jitter / 0.3arcsec
- Maximum Az Velocity / 15 degrees/sec
- Maximum Az Acceleration / 2.5 degrees/sec/sec
PRIMARY MIRROR
Type / ZD concave paraboloid
Clear Aperture (CA) / 0.75m
Focal Length / 0.1143 m
Optical Coating / SIO over Al
SECONDARY MIRROR
Type / ZD - convex Hyperboloid
Clear Aperture (CA) / 0.23 m
Focal Length
Optical Coating / SIO over Al
TERTIARY MIRROR
Type / ZD - flat
Clear Aperture / 0.19 m
Optical coating / SIO over Al
COUDE MIRRORS
Type / FS - flat
Clear Aperture / 0.09 m
Optical Coating / SIO over Al
SECTION 2.3 OPTICAL CONFIGURATION CATAGORY
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TRANSMIT/ RECEIVE OPTICS / SPECIFICATIONS
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T/R Coupling Scheme:
- Type / mechanical
- Coupling Efficency / 99%
Spatial Filter: / pinholes
- Field of View / 4, 8, 16, 32, arc sec
Band-Pass FiIter
- Type / Andover
- Bandwidth / 1.5 A( at 532 nm
- Blocking Bandwidth / >10 (m B to X-ray
-Transmission Efficiency / 50 %
Receive Signal Amplitude
Control Mechanism / Secondary focus, Mechanical ND
SECTION 2.4 TRANSMIT/ RECEIVE (T/R) ELECTRONICS CONFIGURATION SECTION
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T/R ELECTRONICS / SPECIFICATIONS
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TRANSMIT DETECTOR
-Responsivity / 1 ns
- Gain / 1
- Bandwidth / 1 GHz
- Jitter (single pe) / N/A
- Impulse Response
- Pulse Width / 2ns HAFW
- Rise Time / 1.5ns
- Dynamic Range / > bias voltage
RECEIVE DETECTOR / SPAD
- Ouantum- Efficiency / 15%
- Gain / avalanche mode
- Bandwidth / 300 MHz
- Jitter (single pe) / 20 - 30 ps
- Impulse Response Pulse Width
Rise Time / 1 ns
- Dynamic Range / 1 - 30 photons
AMPLIFIER / N/A
TARGET IMAGING Capability
- Type of camera / ICCD
- Gain / N/A
- Sensitivity / 10 -5 lux on face plate
SIGNAL PROCESSING Technique
- Type of Device
- CFD / TC455
- Length of External
Delay Cable / 13.5 cm
- Bandwidth / 300 MHz
- Dynamic Range(pe) / 1 - 30 pe
- Jitter / 1 cm RMS on ground ranging
EVENT TIMER or TIME OF FLIGHT MEASURMENT: EPOCH
- Clock Frequency / 50 MHz
- Number of Channels / 4
- Number of verniers / 4
- Minimum Dead Timer / 200 ns
- Time Resolution / 10 ps
-Aggregate Jitter / 20 ps
Amplitude Measurement / for MCP only
- Type of Device / LeCroy 2249w
- Bandwidth / not known
- Accuracy / not known
- Part of Data Stream? / for MCP only
SYSTEM DELAY CALIBRATION:
Internal Calibration Capability / with MCP only
Location of Target(s) / Rx table, telescope spider
Range of Target(s) / >50 ns, < 400 ns
External Calibration Capability
Location of Target(s) / < 0( elevation
Range(s) of Target(s) / 50, 100, 150, 200 m
SECTION 2.6 TIMING CONFIGURATION SECTION
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TIMING / SPECIFICATION
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Frequency Standard(s) used / FTS 1050A phase locked to HP5061B
Frequencies / 10 Mhz
Short-Term Stability / ( 1 x 10-12
Long-Term Stability / ( 1 x 10-11
Epoch Time Measurement:
- Type of Device / proprietory controller, 2229's
- Resolution / 10ps (Lecroy)
- Timing Closure
SECTION 2.7 METEOROLOGICAL SENSORS CONFIGURATION CATAGORY
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MFETOROLOGICAL SENSORS / SPECIFICATIONS
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THERMOMETER
Tvpe / Thermistor
Accuracy (calibrated) / ( .15(C
Resolution / .01
Range / -20( C to +80( C
BAROMETER
Type / Analog
Accuracy (calibrated) / ( 1%
Range / 600 to 1100 mb
RELATIVE hUMIDITY
Type / Thin Film Cap
Svstem Accuracy / ( 2%
Resolution / 0.5
System Range / 0 to 100 %
WIND Measurement Speed Direction
Type 3 CUP vane
Sensor photon coupled chopper potentiometer
Range 0 - 100 mph 360( continuous
Accuracy ( .15 mph 0.5(
Resolution .05 mph 0.1(
Threshold 0.5 mph N/A
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