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Performance
Stafford: General information
Stafford
Jump to: Photo, Contact, Coordinates, News, Links
Stafford Contact:
Agency | NAVAL RESEARCH LABORATORY |
Mailing Address | 4555 OVERLOOK AVE SW, CODE 8123, WASHINGTON, DC 20375 |
Primary Contact | |
Contact Name | JAKE GRIFFITHS |
Telephone (primary) | 202-404-3508 |
Telephone (secondary) | 765-413-6690 |
Fax | 202-404-1226 |
JAKE.GRIFFITHS@NRL.NAVY.MIL | |
Secondary Contact | |
Contact Name | |
Telephone (primary) | |
Telephone (secondary) | |
Fax | |
Stafford Coordinates:
Approximate Position:
X coordinate | [m] | 1092770.4387 |
Y coordinate | [m] | -4877220.3267 |
Z coordinate | [m] | 3948976.2350 |
Latitude | [deg] | 38.4992167 N |
Longitude | [deg] | 282.628892 E |
Elevation | [m] | 23.92248 |
Survey Method | ||
Date Measured | ||
Additional Information |
Stafford News:
Local Events:
Date | 2011-08-23 17 |
Event | EARTHQUAKE |
Additional Information | Magnitude 5.8 earthquake located at 37.936 N, 77.933 W |
SLRMail Messages:
No SLRMail mesages found.Stafford Link:
No site link found.Stafford: 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) : Jake Griffiths Preparer E-mail : jake.griffiths@nrl.navy.mil Date Prepared : 2020-03-12 Report Type : UPDATE Site Log Format Version : 2.0 Site Log Revision : Back to top 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 : Geologic Characteristic : CLAY/SAND Additional Information : THIS IS A MARKER ON TELESCOPE FOUNDATION, : Epoch 2015:232 and tied to ITRF2008 using : GPS Back to top 2. Site Location Information City or Town : STAFFORD State or Province : VIRGINIA Country : UNITED STATES Tectonic Plate : NORTH AMERICAN Local Time (UTC +/- hours) : Approximate Position X coordinate [m]: 1092770.4387 Y coordinate [m]: -4877220.3267 Z coordinate [m]: 3948976.2350 Latitude [deg]: 38.4992167 N Longitude [deg]: 282.628892 E Elevation [m]: 23.92248 Survey Method : TRILATERATION+GNSS Date Measured : 2015-08-20 Additional Information : Back to top 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]: -1.2022 +- 0.0007 East [m]: -0.0102 +- 0.0007 Up [m]: 4.0545 +- 0.0007 Date Measured : 2015-08-20 Date Installed : 2002-08-01 Date Removed : Additional Information : AXIS INTERSECTION IN X,Y,Z is : 1092771.2861, -4877224.1556, : 3948977.81812 : Local re-survey and analysis completed : in September, 2016. Back to top 4. Telescope Information 4.01 Receiving Telescope Type : CASSEGRAIN Aperture [m]: 1 Mount : AZ-EL Date Installed : 2002-08-01 Date Removed : Xmitting Telescope Type : CASSEGRAIN Aperture [m]: 1 Date Installed : 2002-08-01 Date Removed : Tracking Camera Type : ICCD Model : VARIOUS Manufacturer : VARIOUS Field of View [deg]: 0.4011 Minimum Magnitude [mag]: 12 Date Installed : 2003-MM-DD Date Removed : Transmit/Receive Path : COMMON COUDE Transmit/Receive Switch : POLARIZER Max Slew Rate Az [deg/s]: 20 Max Slew Rate El [deg/s]: 10 Max Used Tracking Rate Az : Max Used Tracking Rate El : Telescope Shelter : DOME; Observa-Dome with bi-parting shutter Daylight Filter Type : SPECTRAL FILTER Dayl. Filt. Bandwidth [nm]: 4 Adjustable Attenuation : BOTH Adjustable Field of View : NO Transmit Efficiency : 0.8 Receive Efficiency : 0.8 Date Installed : 2002-08-01 Date Removed : Additional Information : Back to top 5. Laser System Information 5.01 Laser Type : ND:YAG Model : Manufacturer : Number of Amplifiers : 3 Primary Wavelength [nm]: 1064 Primary Maximum Energy [mJ]: 100 Secondary Wavelength [nm]: Secondary Max. Energy [mJ]: Xmit Energy Adjustable : YES Additional Information : Pulse Width (FWHM) [ps]: 190 Max. Repetition Rate [Hz]: 10 Fullw. Beam Divergence ["]: 16.5 - 206.3 Theoretical Beam Div : 20.6 Measured Beam Div : 24.8 Method Used : ILRS DIVERGENCE PROCEDURE Additional Information : Final Beam Diameter [m]: 1 Eyesafe : NO Eyesafe Standard : ANSI Z136.1 & Z136.6 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 : 2002-08-01 Date Removed : N.A. Additional Information : 5.02 Laser Type : ND:YAG Model : PicoBlade with autoNLO module Manufacturer : Lumentum Number of Amplifiers : 4 Primary Wavelength [nm]: 1064 Primary Maximum Energy [mJ]: 0.9 Secondary Wavelength [nm]: 532 Secondary Max. Energy [mJ]: 0.75 Xmit Energy Adjustable : YES Additional Information : FREQUENCY DOUBLED OUTPUT OF LASER 5.03 Pulse Width (FWHM) [ps]: 34 Max. Repetition Rate [Hz]: 2000 Fullw. Beam Divergence ["]: 20.6 Theoretical Beam Div : Measured Beam Div : Method Used : Additional Information : Final Beam Diameter [m]: 0.707 Eyesafe : YES Eyesafe Standard : ANSI 136.1 Polarization on Exit : CIRCULAR Laser Fire Control : SYNCRONIZED TO UTC Laser Energy Monitor : CONTINUOUS Start Diode Type : Silicon Manufactorer : PESO Consulting Model : Optical Trigger Device v2014.01 Quantum Efficiency [%]: Rise/Fall Time [ps]: <150 (Fall Time) Date Installed : 2018-08-23 Date Removed : Signal Processing : FIXER THRESHOLD DISCRIM.; PULSE FORMING ELEC. Manufacturer : Model : Date Installed : Date Removed : Additional Information : Date Installed : 2018-08-23 Date Removed : Additional Information : 5.03 Laser Type : ND:YAG Model : PicoBlade with autoNLO module Manufacturer : Lumentum Number of Amplifiers : 4 Primary Wavelength [nm]: 1064 Primary Maximum Energy [mJ]: 0.9 Secondary Wavelength [nm]: Secondary Max. Energy [mJ]: Xmit Energy Adjustable : YES Additional Information : Pulse Width (FWHM) [ps]: 28 Max. Repetition Rate [Hz]: 2000 Fullw. Beam Divergence ["]: 20.6 Theoretical Beam Div : Measured Beam Div : Method Used : Additional Information : Final Beam Diameter [m]: 0.707 Eyesafe : YES Eyesafe Standard : ANSI 136.1 Polarization on Exit : CIRCULAR Laser Fire Control : SYNCRONIZED TO UTC Laser Energy Monitor : CONTINUOUS 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 : 2018-08-23 Date Removed : Additional Information : Back to top 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 Diam ["]: 16.5 - 206.3 Date Installed : 2002-08-01 Date Removed : Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : CFD Manufacturer : TENNELEC Model : 454 Date Installed : 2002-08-01 Date Removed : Amplitude Measurement : NO Return-Rate Controlled: NO Mode of Operation : MULTI Additional Information: Time of Flight Observ. : INTERVAL Manufacturer : STANFORD Model : 620 Resolution [ps]: Precision [ps]: Date Installed : 2002-08-01 Date Removed : 2009-06-15 Additional Information : HP 5370A USED FOR CALIBRATION 6.01.02 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 Diam ["]: 16.5 - 206.3 Date Installed : 2002-08-01 Date Removed : Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : CFD Manufacturer : TENNELEC Model : 454 Date Installed : 2002-08-01 Date Removed : Amplitude Measurement : NO Return-Rate Controlled: NO Mode of Operation : MULTI Additional Information: Time of Flight Observ. : EVENT Manufacturer : HTSI Model : Resolution [ps]: Precision [ps]: Date Installed : 2009-06-15 Date Removed : Additional Information : HP 5370A USED FOR CALIBRATION 6.02.01 Secondary Chain Wavelength [nm]: 532 Detector Type : CSPAD Manufacturer : PESO Consulting Model : #0450 Quantum Efficiency [%]: 20 Nominal Gain : Rise Time [ps]: Jitter (Single PE)[ps]: Field of View Diam ["]: Date Installed : 2018-08-23 Date Removed : Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : Time walk compensated Manufacturer : PESO Consulting Model : Date Installed : Date Removed : Amplitude Measurement : Return-Rate Controlled: YES Mode of Operation : MULTI Additional Information: Time of Flight Observ. : EVENT Manufacturer : PESO Consulting Model : NPET 1CH01-112015-0017 : NPET 1CH01-112015-0018 Resolution [ps]: 0.16 Precision [ps]: 0.9 Date Installed : 2018-08-23 Date Removed : 2020-02-05 Additional Information : 6.02.01 Secondary Chain Wavelength [nm]: 532 Detector Type : CSPAD Manufacturer : PESO Consulting Model : #0450 Quantum Efficiency [%]: 20 Nominal Gain : Rise Time [ps]: Jitter (Single PE)[ps]: Field of View Diam ["]: Date Installed : 2018-08-23 Date Removed : Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : Time walk compensated Manufacturer : PESO Consulting Model : Date Installed : Date Removed : Amplitude Measurement : Return-Rate Controlled: YES Mode of Operation : MULTI Additional Information: Time of Flight Observ. : EVENT Manufacturer : PESO Consulting Model : NPET 2CH02-0818-001 Resolution [ps]: 0.16 Precision [ps]: 0.9 Date Installed : 2020-02-05 Date Removed : Additional Information : 6.03.01 Tertiary Chain Wavelength [nm]: 1064 Detector Type : CSPAD Manufacturer : PESO Consulting Model : #0451 Quantum Efficiency [%]: 0.1 Nominal Gain : Rise Time [ps]: Jitter (Single PE)[ps]: Field of View Diam ["]: Date Installed : 2020-02-05 Date Removed : Amplifier Type : Manufacturer : Model : Gain : Bandwidth : Date Installed : Date Removed : Additional Information: Signal Processing : Time walk compensated @532nm Manufacturer : PESO Consulting Model : Date Installed : Date Removed : Amplitude Measurement : Return-Rate Controlled: YES Mode of Operation : MULTI Additional Information: Time of Flight Observ. : EVENT Manufacturer : PESO Consulting Model : NPET 2CH02-1119-0005 Resolution [ps]: 0.120 Precision [ps]: 0.9 Date Installed : 2020-02-05 Date Removed : Additional Information : Back to top 7. Tracking Capabilities 7.01 Satellites Very Low Alt (<400 km) : YES Low Altitude (400-2000) : YES LAGEOS/LARES : YES GLONASS : YES Etalon : YES GNSS : YES Geosynchronous : Moon : YES Ave. 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 Laser Polarization @emitter: OperationIntermittent Months per Year : 12 Days per Week : 7 Hours per Day : 24 Staff per Shift : 3 - 5 System Shared With : R&D Time Allocated to SLR [%]: 25 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 : 2002-08-01 HH:MM UT Date Last Applicable : Additional Information : Back to top 8. Calibration 8.01 Calibration Type : HOURLY Target Location : EXTERNAL Target Type : CORNER CUBE Target Structure : PIERS OF VARIOUS CONSTRUCTION Number of Targets : 5 Target Distance(s) [m]: 13.7595, 34.8803, 36.6595, 38.6958, 410.8936 Date Measured : 2018-08-20 Accuracy [mm]: 0.7 Verification : (multiple lines) Return-Rate Controlled : YES Eye-Safe Method : ND FILTERS Additional Information : Mode of Operation : MULTI PHOTON Calibration performed : HOUR Single Shot RMS [mm]: 4 Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA Edit Criterion 2nd Chain : ITERATIVE 3.0 SIGMA Application of Cal Data : LINEAR FIT Date Installed : 2002-08-01 Date Removed : Additional Information : Back to top 9. Time and Frequency Standards 9.01.01 Frequency Standard Type : GPS-DISCIPLINED 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 : 2016-11-02 Additional Information : Internal GPS receiver failed, : switched to backup 9.01.02 Frequency Standard Type : GPS-DISCIPLINED 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 : 2016-11-02 Date Removed : Additional Information : 9.01.03 Frequency Standard Type : H-MASER Model : MHM 2010 LPN Manufacturer : Microsemi Short Term Stab. [e-12]: 0.08 Long Term Stab. [e-12]: 0.0015 Time Reference : USNO Synchronization : TWSTT Epoch Accuracy [ns]: 1 Date Installed : 2018-01-11 Date Removed : Additional Information : 9.02.01 GNSS Timing Rcvr Model : DATUM 635 & 638 CARDS ON IRIG B Manufacturer : Date Installed : 2002-08-01 Date Removed : Additional Information : 9.03.01 One-way System Calibration Date performed : Direction Calibrated : Additional Information : Back to top 10. Preprocessing Information 10.01 On-site NP Generation : YES Data Screening : IRV+POLYNOMIAL Return-Rate Rejection : Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA Edit Criterion 2nd Chain : Upload interval : AFTER EACH SHIFT Date First Applicable : 2002-08-01 HH:MM UT Date Last Applicable : Additional Information : Back to top 11. Aircraft Detection 11.01 Detection Type : RADAR, OBSERVER Manufacturer/Provider : HONEYWELL TECHNOLOGY SOLUTIONS INC. Automatic Laser Shutoff : YES Alarms Recorded : Hazard Distance [km]: 41.8 Date Installed : 2002-08-01 Date Removed : 2019-06-07 Additional Information : 11.02 Detection Type : RADAR, OBSERVER Manufacturer/Provider : KBR Automatic Laser Shutoff : YES Alarms Recorded : YES Hazard Distance [km]: 41.8 Date Installed : 2019-06-11 Date Removed : Additional Information : Back to top 12. Meteorological Instrumentation 12.01.01 Pressure Sensor Model : MET3A Manufacturer : PAROSCIENTIFIC Recording Interval : 00:00:10 Accuracy [mbar]: 0.1 Height Diff to SRP [m]: TBD Distance from SRP [m]: Date Installed : 2002-08-01 HH:MM UT Calibration Interval : YEARLY Date Removed : 2015-09-23 HH:MM UT Additional Information : RECALIBRATED Sep 2002 12.01.02 Pressure Sensor Model : MET4A-1 Manufacturer : PAROSCIENTIFIC Recording Interval : 00:00:10 Accuracy [mbar]: 0.1 Height Diff to SRP [m]: TBD Distance from SRP [m]: Date Installed : 2015-09-23 HH:MM UT Calibration Interval : 2015-09-23 Date Removed : Additional Information : New 12.01.03 Pressure Sensor Model : MET4A-1 Manufacturer : PAROSCIENTIFIC Recording Interval : 00:00:10 Accuracy [mbar]: 0.1 Height Diff to SRP [m]: TBD Distance from SRP [m]: Date Installed : 2019-06-03 HH:MM UT Calibration Interval : 2019-03-28 Date Removed : Additional Information : REFURBISHED AND UPGRADED MET3A 12.02.01 Temp Sensor Model : SAME AS ABOVE MET3A Manufacturer : PAROSCIENTIFIC Recording Interval : 00:00:10 Accuracy [deg C]: Date Installed : Calibration Interval : Date Removed : Additional Information : 12.02.02 Temp Sensor Model : SAME AS ABOVE MET4A-1 Manufacturer : PAROSCIENTIFIC Recording Interval : 00:00:10 Accuracy [deg C]: Date Installed : Calibration Interval : Date Removed : Additional Information : 12.02.03 Temp Sensor Model : SAME AS ABOVE MET4A-1 Manufacturer : PAROSCIENTIFIC Recording Interval : 00:00:10 Accuracy [deg C]: Date Installed : Calibration Interval : Date Removed : Additional Information : 12.03.01 Humidity Sensor Model : SAME AS ABOVE MET 3A Manufacturer : PAROSCIENTIFIC Recording Interval : 00:00:10 Accuracy [% rel h]: Date Installed : Calibration Interval : Date Removed : Additional Information : 12.03.02 Humidity Sensor Model : SAME AS ABOVE MET4A-1 Manufacturer : PAROSCIENTIFIC Recording Interval : 00:00:10 Accuracy [% rel h]: Date Installed : Calibration Interval : Date Removed : Additional Information : 12.03.03 Humidity Sensor Model : SAME AS ABOVE MET4A-1 Manufacturer : PAROSCIENTIFIC Recording Interval : 00:00:10 Accuracy [% rel h]: Date Installed : Calibration Interval : Date Removed : Additional Information : Back to top 13. Local Ties, Eccentricities, and Collocation Information 13.01 Collocated Permanent Geodetic Systems 13.01.01.01 GNSS : IGS Date Installed : 2017-07-26 Date Removed : Additional Info : MRC1 13.01.02.01 DORIS : NO Date Installed : Date Removed : Additional Info : 13.01.03.01 PRARE : NO Date Installed : Date Removed : Additional Info : 13.01.04.01 VLBI : NO Date Installed : Date Removed : Additional Info : 13.01.05.01 Gravimeter : NO Date Installed : Date Removed : Additional Info : 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 : Instrumentation Type : Instrumentation Status : DOMES Number : CDP Number : Differential Components (ITRS) dx [m]: dy [m]: dz [m]: Date Measured : Determined by : Date Installed : Date Removed : Additional Information : 13.03.01.01 Eccentricities Between Other Monuments on Site From: Monument Name : DOMES Number : CDP Number : To: Monument Name : DOMES Number : CDP Number : Differential Components (ITRS) dx [m]: dy [m]: dz [m]: Date Measured : Determined by : Additional Information : Back to top 14. Local Events Possibly Affecting Computed Position 14.01 Date : 2011-08-23 17:51 UT Event : EARTHQUAKE Additional Information : Magnitude 5.8 earthquake located : at 37.936 N, 77.933 W Back to top 15. On-Site, Point of Contact Agency Information Agency : NAVAL RESEARCH LABORATORY Mailing Address : 4555 OVERLOOK AVE SW, CODE 8123, : WASHINGTON, DC 20375 Website : Primary Contact Contact Name : JAKE GRIFFITHS Telephone (primary) : 202-404-3508 Telephone (secondary) : 765-413-6690 Fax : 202-404-1226 E-mail : JAKE.GRIFFITHS@NRL.NAVY.MIL Secondary Contact Contact Name : LINDA THOMAS Telephone (primary) : 202-404-2062 Telephone (secondary) : 703-551-1875 Fax : 202-404-1226 E-mail : LINDA.THOMAS@NRL.NAVY.MIL Tertiary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : Back to top 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 : Back to top 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 : Back to top
Stafford: LAGEOS performance
No performance data found.
Stafford: Satellite Information (as a function of local time and satellite range)
No satellite information found.