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ILRS Home  Stations Site Listing Stafford
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Stafford: Site Log
Instructions and Update Site Log
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Section: 0. FormSection: 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) : MARK DAVIS
Preparer E-mail : MDAVIS@SSDD.NRL.NAVY.MIL
Date Prepared : 2002-09-25
Report Type : UPDATE
Format Version : 1.0
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1. Identification of the Ranging System Reference Point (SRP)
Site Name : NRL OPTICAL TEST FACILITY
IERS DOMES Number : 49654M001
CDP Pad ID : 7865
Subnetwork : US DOD
Description : MONUMENT IN TELESCOPE PIER
Monument Description : BRASS MARKER CIRCLE WITH DIVOT
Monument Inscription : NONE
Mark Description : NONE
Date Installed : 2002-08-01
Date Removed : (yyyy-mm-dd)
Geologic Characteristic : CONGLOMERATE
Additional Information : THIS IS A MARKER ON TELESCOPE FOUNDATION,
Epoch 2002:239 and tied to ITRF2000 using
GPS techniques via USNO and GODE
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2. Site Location Information
City or Town : STAFFORD
State or Province : VIRGINIA
Country : UNITED STATES
Tectonic Plate : EASTERN NORTH AMERICAN
Approximate Position
X coordinate [m]: 1092770.609
Y coordinate [m]:-4877220.373
Z coordinate [m]: 3948976.125
Latitude [deg]: 38.499215 N
Longitude [deg]: 77.371107 W
Elevation [m]: 23.9185
Additional Information :
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3. General System Information
3.01 System Name : NRL OPTICAL TEST FACILITY
4-Character Code : STAL
CDP System Number : 86
CDP Occupation Number : 01
Eccentricity to SRP (if Not Identical With SRP)
North [m]: -1.2160 +- 0.002
East [m]: -0.0190 +- 0.002
Up [m]: 4.0720 +- 0.002
Date Measured : 2002-08-01
Date Installed : 2002-08-01
Date Removed : (yyyy-mm-dd)
Additional Information : AXIS INTERSECTION IN X,Y,Z is
1092771.4596, -4877224.2240,
Z3948977.7082
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4. Telescope Information
4.01 Receiving Telescope Type : BRASHEAR LP
Aperture [m]: 1
Mount : AZ-EL
Xmitting Telescope Type : BRASHEAR
Aperture [m]: 1
Tracking Camera Type : ICCD
Model : VARIOUS
Manufacturer : VARIOUS
Field of View [deg]: 1mrad, 7mrad
Minimum Magnitude [mag]: >15
Transmit/Receive Path : COMMON COUDE
Transmit/Receive Switch : POLARIZING BEAMSPLITTER
Max Slew Rate Az [deg/s]: 20
Max Slew Rate El [deg/s]: 10
Max Used Tracking Rate Az : ANY
Max Used Tracking Rate El : ANY
Telescope Shelter : DOME
Daylight Filter Type : SPECTRAL FILTER
Dayl. Filt. Bandwidth [nm]: <10
Adjustable Attenuation : BOTH
Transmit Efficiency : > 0.50
Receive Efficiency : > 0.50
Date Installed : 2002-08-01
Date Removed : (yyyy-mm-dd)
Additional Information :
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5. Laser System Information
5.01 Laser Type : ND:YAG
Number of Amplifiers : 3
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]: 100
Secondary Wavelength [nm]:
Secondary Max. Energy [mJ]:
Xmit Energy Adjustable : YES
Pulse Width (FWHM) [ps]: 190
Max. Repetition Rate [Hz]: 10
Fullw. Beam Divergence ["]: 0.08-1.00 Mrad
Final Beam Diameter [m]: 1
Eyesafe : NO
Eyesafe Standard : ANSI Z136.1 & Z136.6
Date Installed : 2001-11-01
Date Removed : N/A
Additional Information :
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6. Receiver System
6.01.01 Primary Chain
Wavelength [nm]: 1064
Detector Type : Si APD
Manufacturer : VARIOUS
Model : VARIOUS
Quantum Efficiency [%]:
Nominal Gain :
Rise Time [ps]:
Jitter (Single PE)[ps]:
Field of View ["]: TO 1mrad
Date Installed : 2002-08-01
Date Removed : (yyyy-mm-dd)
Signal Processing : CFD
Manufacturer : TENNELEC
Model : 454
Date Installed : 2002-08-01
Date Removed : (yyyy-mm-dd)
Amplitude Measurement : NO
Return-rate Controlled: NO
Mode of Operation : MULTI
Time of Flight Observ. : INTERVAL
Manufacturer : STANFORD
Model : 620
Resolution [ps]:
Precision [ps]:
Date Installed : 2002-08-01
Date Removed : (yyyy-mm-dd)
Additional Information : HP 5370A USED FOR CALIBRATION
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7. Tracking Capabilities
7.01 Satellites
Very Low Alt (<400 km) : YES
Low Altitude (400-2000) : YES
Lageos : YES
GLONASS : YES
Etalon : YES
GPS : YES
Moon : YES
Avge Pass Switch Time [s]:
Average values for Lageos
Single Shot RMS [mm]:
# of Obs per NP :
Use of Semi-trains : NO
# of Semi-train Tracks : NA
Range Gate Width [ns]: 100-10000
Beam Pointing Accuracy ["]: 0.1
Angle Encoder Resolution["]: 0.005
Min. Tracking Elev. [deg]: 12
Operation
Months per Year : SEVERAL
Days per Week : ALL
Hours per Day : ALL
Staff per Shift : MOSTLY 3
System Shared With : R&D
Time Allocated to SLR [%]: TBD
Remotely Controllable : NO
Date First Applicable : 2002-08-01
Date Last Applicable : (yyyy-mm-dd hh:mm UT)
Additional Information :
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8. Calibration
8.01 Calibration Type : PRE+POST
Target Location : EXTERNAL+INTERNAL
Target Type : CORNER CUBE
Target Structure : PIERS OF VARIOUS CONSTRUCTION
Target Distance [m]:
Date Measured : (yyyy-mm-dd)
Accuracy (mm) [mm]:
Verification : (multiple lines)
Return-rate Controlled : YES
Mode of Operation : MULTI
Average Cal Interval [min]: 5
Single Shot RMS [mm]:
Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA
Edit Criterion 2nd Chain :
Application of Cal Data : LINEAR FIT
Date Installed : 2002-08-01
Date Removed : (yyyy-mm-dd)
Additional Information :
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9. Time and Frequency Standards
9.01.01 Frequency Standard Type : RUBIDIUM
Model :
Manufacturer : BALL EFFRATOM
Short Term Stab. [e-12]:
Long Term Stab. [e-12]:
Time Reference : USNO
Synchronization : GPS
Epoch Accuracy [ns]:
Date Installed : 2002-08-01
Date Removed : (yyyy-mm-dd)
Additional Information :
9.02.01 GPS Timing Rcvr Model : DATUM 635 & 638 CARDS ON IRIG B
Manufacturer :
Date Installed : 2002-08-01
Date Removed : (yyyy-mm-dd)
Additional Information :
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10. Preprocessing Information
10.01 On-site NP Generation : YES
Data Screening : IRV+POLYNOMIAL
Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA
Edit Criterion 2nd Chain :
Upload interval : AFTER EACH SHIFT
Date First Applicable : 2002-08-01
Date Last Applicable : (yyyy-mm-dd hh:mm UT)
Additional Information :
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11. Aircraft Detection
11.01 Detection Type : RADAR, OBSERVER
Date Installed : 2002-08-01
Date Removed : (yyyy-mm-dd)
Additional Information :
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12. Meteorological Instrumentation
12.01.01 Pressure Sensor Model : MET 3
Manufacturer : PAROSCIENTIFIC
Recording Interval : 00:00:10
Accuracy [mbar]: 0.1
Height Diff to SRP [m]: TBD
Date Installed : 2002-08-01
Calibration Interval : YEARLY
Date Removed : (yyyy-mm-dd hh:mm UT)
Additional Information : RECALIBRATED Sep 2002
12.02.01 Temp Sensor Model : SAME AS ABOVE MET 3
Manufacturer : PAROSCIENTIFIC
Recording Interval : 00:00:10
Accuracy [deg C]:
Date Installed : (yyyy-mm-dd hh:mm UT)
Calibration Interval : (YEARLY/MONTHLY/etc)
Date Removed : (yyyy-mm-dd hh:mm UT)
Additional Information : (multiple lines)
12.03.01 Humidity Sensor Model : SAME AS ABOVE MET 3
Manufacturer : PAROSCIENTIFIC
Recording Interval : 00:00:10
Accuracy [% rel h]:
Date Installed : (yyyy-mm-dd hh:mm UT)
Calibration Interval : (YEARLY/MONTHLY/etc)
Date Removed : (yyyy-mm-dd hh:mm UT)
Additional Information : (multiple lines)
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13. Local Ties, Eccentricities, and Collocation Information
13.01 Collocated Permanent Geodetic Systems
GPS : (NO/IGS/EUREF/etc)
Date Installed : (yyyy-mm-dd)
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
GLONASS : NO
Date Installed : (yyyy-mm-dd)
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
DORIS : NO
Date Installed : (yyyy-mm-dd)
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
PRARE : NO
Date Installed : (yyyy-mm-dd)
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
VLBI : NO
Date Installed : (yyyy-mm-dd)
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
Gravimeter : NO
Date Installed : (yyyy-mm-dd)
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
13.02.xx Local Ties from the SRP to Other Monuments or Systems on Site
Monument Name :
Instrumentation Type : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/NONE)
Instrumentation Status : (PERMANENT/MOBILE)
DOMES Number : (XXXXXXXXX)
CDP Number : (XXXX)
Differential Components (ITRS)
dx [m]: (m +- m)
dy [m]: (m +- m)
dz [m]: (m +- m)
Date Measured : (yyyy-mm-dd)
Determined by :
Date Installed : (yyyy-mm-dd)
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
13.03.xx Eccentricities Between Other Monuments on Site
From: Monument Name :
DOMES Number : (XXXXXXXXX)
CDP Number : (XXXX)
To: Monument Name :
DOMES Number : (XXXXXXXXX)
CDP Number : (XXXX)
Differential Components (ITRS)
dx [m]: (m +- m)
dy [m]: (m +- m)
dz [m]: (m +- m)
Date Measured : (yyyy-mm-dd)
Determined by :
Additional Information : (multiple lines)
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14. Local Events Possibly Affecting Computed Position
14.01 Date : (yyyy-mm-dd hh:mm UT)
Event : (EARTHQUAKE/CONSTRUCTION/etc)
Additional Information : (multiple lines)
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15. On-Site, Point of Contact Agency Information
Agency : NAVAL RESEARCH LABORATORY
Mailing Address : 4555 OVERLOOK AVE SW WASHINGTON, DC 20375
Primary Contact
Contact Name : WILLIAM SCHARPF
Telephone (primary) : 202-767-0190
Telephone (secondary) : 703-551-1875
Fax : 202-404-1226
E-mail : SCHARPF@NCST.NRL.NAVY.MIL
Secondary Contact
Contact Name : MARK DAVIS
Telephone (primary) : 202-767-2829
Telephone (secondary) : 202-309-1513
Fax : 202-404-1226
E-mail : MDAVIS@SSDD.NRL.NAVY.MIL
Additional Information :
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16. Responsible Agency (if different from 15.)
Agency : (multiple lines)
Mailing Address : (multiple lines)
Primary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Secondary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Additional Information : (multiple lines)
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17. More Information
URL for More Information : N.A.
Hardcopy on File
Site Map : NO
Site Diagram : NO
Horizon Mask : NO
Monument Description : NO
Site Pictures : NO
Additional Information : (multiple lines)
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