International Laser Ranging Service

Greenbelt (TLRS-4): Site Log

Instructions and Update Site Log

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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)    : Carey Noll
       Preparer E-mail            : Carey.Noll@nasa.gov
       Date Prepared              : 2005-11-28
       Report Type                : NEW
       Site Log Format Version    : 2.0
       Site Log Revision          : 
 
 
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  1.   Identification of the Ranging System Reference Point (SRP)
 
       Site Name                  : GGAO (TLRS-4)
       IERS DOMES Number          : 40451M116
       CDP Pad ID                 : 7130
       Subnetwork                 : NASA
       Description                : MONUMENT
       Monument Description       : STANDARD NASA DISK
       Monument Inscription       : 
       Mark Description           : 
       Date Installed             : 2005-01-01
       Date Removed               : 
       Geologic Characteristic    : 
       Additional Information     : 
 
 
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  2.   Site Location Information
 
       City or Town               : Greenbelt
       State or Province          : MD
       Country                    : USA
       Tectonic Plate             : North American
       Local Time (UTC +/- hours) : 
       Approximate Position
         X coordinate          [m]: 
         Y coordinate          [m]: 
         Z coordinate          [m]: 
         Latitude            [deg]: 39.0209 N
         Longitude           [deg]: 76.8275 W
         Elevation             [m]: 
       Survey Method              : 
       Date Measured              : 
       Additional Information     : 
 
 
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  3.   General System Information
 
  3.01 System Name                : TLRS-4
       4-Character Code           : GO4F
       CDP System Number          : 14
       CDP Occupation Number      : 03
       Eccentricity to SRP (if Not Identical With SRP)
         North                 [m]: 
         East                  [m]: 
         Up                    [m]: 
         Date Measured            : 
       Date Installed             : 
       Date Removed               : 
       Additional Information     : 
 
 
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  4.   Telescope Information
 
  4.01 Receiving Telescope Type   : 
         Aperture              [m]: 
         Mount                    : 
       Date Installed             : 
       Date Removed               : 
       Xmitting Telescope Type    : 
         Aperture              [m]: 
       Date Installed             : 
       Date Removed               : 
       Tracking Camera Type       : 
         Model                    : 
         Manufacturer             : 
         Field of View       [deg]: 
         Minimum Magnitude   [mag]: 
       Date Installed             : 
       Date Removed               : 
       Transmit/Receive Path      : 
       Transmit/Receive Switch    : 
       Max Slew Rate Az    [deg/s]: 
       Max Slew Rate El    [deg/s]: 
       Max Used Tracking Rate Az  : 
       Max Used Tracking Rate El  : 
       Telescope Shelter          : 
       Daylight Filter Type       : 
       Dayl. Filt. Bandwidth  [nm]: 
       Adjustable Attenuation     : 
       Adjustable Field of View   : 
       Transmit Efficiency        : 
       Receive Efficiency         : 
       Date Installed             : 
       Date Removed               : 
       Additional Information     : 
 
 
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  5.   Laser System Information
 
  5.01 Laser Type                 : 
       Model                      : 
       Manufacturer               : 
       Number of Amplifiers       : 
       Primary Wavelength     [nm]: 
       Primary Maximum Energy [mJ]: 
       Secondary Wavelength   [nm]: 
       Secondary Max. Energy  [mJ]: 
       Xmit Energy Adjustable     : 
         Additional Information   : 
       Pulse Width (FWHM)     [ps]: 
       Max. Repetition Rate   [Hz]: 
       Fullw. Beam Divergence  ["]: 
         Theoretical Beam Div     : 
         Measured Beam Div        : 
           Method Used            : 
           Additional Information : 
       Final Beam Diameter     [m]: 
       Eyesafe                    : 
       Eyesafe Standard           : 
       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             : 
       Date Removed               : 
       Additional Information     : 
 
 
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  6.   Receiver System
 
  6.01.01 Primary Chain
          Wavelength          [nm]: 
          Detector Type           : 
            Manufacturer          : 
            Model                 : 
            Quantum Efficiency [%]: 
            Nominal Gain          : 
            Rise Time         [ps]: 
            Jitter (Single PE)[ps]: 
            Field of View Diam ["]: 
            Date Installed        : 
            Date Removed          : 
          Amplifier Type          : 
            Manufacturer          : 
            Model                 : 
            Gain                  : 
            Bandwidth             : 
            Date Installed        : 
            Date Removed          : 
            Additional Information: 
          Signal Processing       : 
            Manufacturer          : 
            Model                 : 
            Date Installed        : 
            Date Removed          : 
            Amplitude Measurement : 
            Return-Rate Controlled: 
            Mode of Operation     : 
            Additional Information: 
          Time of Flight Observ.  : 
            Manufacturer          : 
            Model                 : 
            Resolution        [ps]: 
            Precision         [ps]: 
            Date Installed        : 
            Date Removed          : 
          Additional Information  : 
 
  6.02.01 Secondary Chain
          Wavelength          [nm]: 
          Detector Type           : 
            Manufacturer          : 
            Model                 : 
            Quantum Efficiency [%]: 
            Nominal Gain          : 
            Rise Time         [ps]: 
            Jitter (Single PE)[ps]: 
            Field of View Diam ["]: 
            Date Installed        : 
            Date Removed          : 
          Amplifier Type          : 
            Manufacturer          : 
            Model                 : 
            Gain                  : 
            Bandwidth             : 
            Date Installed        : 
            Date Removed          : 
            Additional Information: 
          Signal Processing       : 
            Manufacturer          : 
            Model                 : 
            Date Installed        : 
            Date Removed          : 
            Amplitude Measurement : 
            Return-Rate Controlled: 
            Mode of Operation     : 
            Additional Information: 
          Time of Flight Observ.  : 
            Manufacturer          : 
            Model                 : 
            Resolution        [ps]: 
            Precision         [ps]: 
            Date Installed        : 
            Date Removed          : 
          Additional Information  : 
 
  6.03.01 Tertiary Chain
          Wavelength          [nm]: 
          Detector Type           : 
            Manufacturer          : 
            Model                 : 
            Quantum Efficiency [%]: 
            Nominal Gain          : 
            Rise Time         [ps]: 
            Jitter (Single PE)[ps]: 
            Field of View Diam ["]: 
            Date Installed        : 
            Date Removed          : 
          Amplifier Type          : 
            Manufacturer          : 
            Model                 : 
            Gain                  : 
            Bandwidth             : 
            Date Installed        : 
            Date Removed          : 
            Additional Information: 
          Signal Processing       : 
            Manufacturer          : 
            Model                 : 
            Date Installed        : 
            Date Removed          : 
            Amplitude Measurement : 
            Return-Rate Controlled: 
            Mode of Operation     : 
            Additional Information: 
          Time of Flight Observ.  : 
            Manufacturer          : 
            Model                 : 
            Resolution        [ps]: 
            Precision         [ps]: 
            Date Installed        : 
            Date Removed          : 
          Additional Information  : 
 
 
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  7.   Tracking Capabilities
 
  7.01 Satellites
         Very Low Alt (<400 km)   : 
         Low Altitude (400-2000)  : 
         LAGEOS/LARES             : 
         GLONASS                  : 
         Etalon                   : 
         GNSS                     : 
         Geosynchronous           : 
         Moon                     : 
       Ave. Pass Switch Time   [s]: 
       Average values for LAGEOS
         Single Shot RMS      [mm]: 
         # of Obs per NP          : 
         Use of Semi-trains       : 
         # of Semi-train Tracks   : 
       Range Gate Width       [ns]: 
       Beam Pointing Accuracy  ["]: 
       Angle Encoder Resolution["]: 
       Min. Tracking Elev.   [deg]: 
       Laser Polarization @emitter: 
       Operation
         Months per Year          : 
         Days per Week            : 
         Hours per Day            : 
         Staff per Shift          : 
         System Shared With       : 
         Time Allocated to SLR [%]: 
         Remotely Controllable    : 
       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      : 
       Date Last Applicable       : 
       Additional Information     : 
 
 
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  8.   Calibration
 
  8.01 Calibration Type           : 
       Target Location            : 
       Target Type                : 
       Target Structure           : 
       Number of Targets          : 
       Target Distance(s)      [m]: 
         Date Measured            : 
         Accuracy             [mm]: 
         Verification             : 
       Return-Rate Controlled     : 
       Eye-Safe Method            : 
         Additional Information   : 
       Mode of Operation          : 
       Calibration performed      : 
       Single Shot RMS        [mm]: 
       Edit Criterion 1st Chain   : 
       Edit Criterion 2nd Chain   : 
       Application of Cal Data    : 
       Date Installed             : 
       Date Removed               : 
       Additional Information     : 
 
 
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  9.   Time and Frequency Standards
 
  9.01.01 Frequency Standard Type : 
          Model                   : 
          Manufacturer            : 
          Short Term Stab.  [e-12]: 
          Long Term Stab.   [e-12]: 
          Time Reference          : 
          Synchronization         : 
          Epoch Accuracy      [ns]: 
          Date Installed          : 
          Date Removed            : 
          Additional Information  : 
 
  9.02.01 GNSS Timing Rcvr Model  : 
          Manufacturer            : 
          Date Installed          : 
          Date Removed            : 
          Additional Information  : 
 
  9.03.01 One-way System Calibration
          Date performed          : 
          Direction Calibrated    : 
          Additional Information  : 
 
 
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 10.   Preprocessing Information
 
 10.01 On-site NP Generation      : 
       Data Screening             : 
       Return-Rate Rejection      : 
       Edit Criterion 1st Chain   : 
       Edit Criterion 2nd Chain   : 
       Upload interval            : 
       Date First Applicable      : 
       Date Last Applicable       : 
       Additional Information     : 
 
 
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 11.   Aircraft Detection
 
 11.01 Detection Type             : 
       Manufacturer/Provider      : 
       Automatic Laser Shutoff    : 
       Alarms Recorded            : 
       Hazard Distance        [km]: 
       Date Installed             : 
       Date Removed               : 
       Additional Information     : 
 
 
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 12.   Meteorological Instrumentation
 
 12.01.01 Pressure Sensor Model   : 
          Manufacturer            : 
          Recording Interval      : 
          Accuracy          [mbar]: 
          Height Diff to SRP   [m]: 
          Distance from SRP    [m]: 
          Date Installed          : 
          Calibration Interval    : 
          Date Removed            : 
          Additional Information  : 
 
 12.02.01 Temp Sensor Model       : 
          Manufacturer            : 
          Recording Interval      : 
          Accuracy         [deg C]: 
          Date Installed          : 
          Calibration Interval    : 
          Date Removed            : 
          Additional Information  : 
 
 12.03.01 Humidity Sensor Model   : 
          Manufacturer            : 
          Recording Interval      : 
          Accuracy       [% rel h]: 
          Date Installed          : 
          Calibration Interval    : 
          Date Removed            : 
          Additional Information  : 
 
 
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 13.   Local Ties, Eccentricities, and Collocation Information
 
 13.01 Collocated Permanent Geodetic Systems
 
 13.01.01.01 GNSS                 : 
             Date Installed       : 
             Date Removed         : 
             Additional Info      : 
 13.01.01.02 GNSS                 : 
             Date Installed       : 
             Date Removed         : 
             Additional Info      : 
 13.01.02.01 DORIS                : 
             Date Installed       : 
             Date Removed         : 
             Additional Info      : 
 13.01.03.01 PRARE                : 
             Date Installed       : 
             Date Removed         : 
             Additional Info      : 
 13.01.04.01 VLBI                 : 
             Date Installed       : 
             Date Removed         : 
             Additional Info      : 
 13.01.05.01 Gravimeter           : 
             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  : 
 
 
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 14.   Local Events Possibly Affecting Computed Position
 
 14.01 Date                       : 
       Event                      : 
       Additional Information     : 
 
 
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 15.   On-Site, Point of Contact Agency Information
 
       Agency                     : 
       Mailing Address            : 
       Website                    : 
       Primary Contact
         Contact Name             : 
         Telephone (primary)      : 
         Telephone (secondary)    : 
         Fax                      : 
         E-mail                   : 
       Secondary Contact
         Contact Name             : 
         Telephone (primary)      : 
         Telephone (secondary)    : 
         Fax                      : 
         E-mail                   : 
       Tertiary Contact
         Contact Name             : 
         Telephone (primary)      : 
         Telephone (secondary)    : 
         Fax                      : 
         E-mail                   : 
       Additional Information     : 
 
 
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 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     : 
 
 
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 17.   More Information
 
       URL for More Information   : 
       Hardcopy on File
         Site Map                 : 
         Site Diagram             : 
         Horizon Mask             : 
         Monument Description     : 
         Site Pictures            : 
       Additional Information     : 
 
 
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