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Potsdam: 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)    : Ludwig Gruwaldt
       Preparer E-mail            : grun@gfz-potsdam.de
       Date Prepared              : 2013-09-05
       Report Type                : UPDATE
       Site Log Format Version    : 2.0
       Site Log Revision          : 
 
 
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  1.   Identification of the Ranging System Reference Point (SRP)
 
       Site Name                  : Potsdam SLR
       IERS DOMES Number          : 14106S009
       CDP Pad ID                 : 7836
       Subnetwork                 : EUROLAS
       Description                : AZ EL INTERSECT
       Monument Description       : Intersection of the az/el axes of the mount
       Monument Inscription       : N.A.
       Mark Description           : BRASS NAIL (2) in pillar below telescope
       Date Installed             : 1992-05-08
       Date Removed               : 
       Geologic Characteristic    : SAND
       Additional Information     : 
 
 
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  2.   Site Location Information
 
       City or Town               : Potsdam
       State or Province          : Brandenburg
       Country                    : Germany
       Tectonic Plate             : Eurasian
       Local Time (UTC +/- hours) : 
       Approximate Position
         X coordinate          [m]: 3800639.8
         Y coordinate          [m]: 881981.9
         Z coordinate          [m]: 5028831.6
         Latitude            [deg]: 52.3800 N
         Longitude           [deg]: 13.0649 E
         Elevation             [m]: 133.7
       Survey Method              : 
       Date Measured              : 
       Additional Information     : 
 
 
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  3.   General System Information
 
  3.01 System Name                : GFZLAS
       4-Character Code           : POTL
       CDP System Number          : 58
       CDP Occupation Number      : 01
       Eccentricity to SRP (if Not Identical With SRP)
         North                 [m]: 
         East                  [m]: 
         Up                    [m]: 
         Date Measured            : N.A.
       Date Installed             : 1992-05-08
       Date Removed               : 
       Additional Information     : 
 
 
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  4.   Telescope Information
 
  4.01 Receiving Telescope Type   : CASSEGRAIN/MANGIN
         Aperture              [m]: 1
         Mount                    : AZ-EL
       Date Installed             : 
       Date Removed               : 
       Xmitting Telescope Type    : CASSEGRAIN/MANGIN (common optics)
         Aperture              [m]: 1 m
       Date Installed             : 
       Date Removed               : 
       Tracking Camera Type       : MCP Image Intensifier + CCD
         Model                    : Proxicam
         Manufacturer             : Proxitronic
         Field of View       [deg]: 0.3
         Minimum Magnitude   [mag]: 
       Date Installed             : 
       Date Removed               : 
       Transmit/Receive Path      : COMMON COUDE
       Transmit/Receive Switch    : ROTATING MIRROR
       Max Slew Rate Az    [deg/s]: 3
       Max Slew Rate El    [deg/s]: 3
       Max Used Tracking Rate Az  : 3
       Max Used Tracking Rate El  : 3
       Telescope Shelter          : ROLL-BACK ROOF
       Daylight Filter Type       : Interference FILTER,unblocked
       Dayl. Filt. Bandwidth  [nm]: 3
       Adjustable Attenuation     : RECEIVE
       Adjustable Field of View   : 
       Transmit Efficiency        : 0.5
       Receive Efficiency         : 0.2
       Date Installed             : 1992-05-08
       Date Removed               : 
       Additional Information     : 
 
 
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  5.   Laser System Information
 
  5.01 Laser Type                 : ND:YAG
       Model                      : 
       Manufacturer               : 
       Number of Amplifiers       : 2
       Primary Wavelength     [nm]: 1064
       Primary Maximum Energy [mJ]: 20
       Secondary Wavelength   [nm]: 532
       Secondary Max. Energy  [mJ]: 10
       Xmit Energy Adjustable     : YES
         Additional Information   : 
       Pulse Width (FWHM)     [ps]: 35
       Max. Repetition Rate   [Hz]: 10
       Fullw. Beam Divergence  ["]: 10 - 60
         Theoretical Beam Div     : 
         Measured Beam Div        : 
           Method Used            : 
           Additional Information : 
       Final Beam Diameter     [m]: 1 m
       Eyesafe                    : NO
       Eyesafe Standard           : ANSI 136.1
       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             : 1992-05-08
       Date Removed               : 
       Additional Information     : 
 
 
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  6.   Receiver System
 
  6.01.01 Primary Chain
          Wavelength          [nm]: 532
          Detector Type           : PMT
            Manufacturer          : Hamamatsu
            Model                 : H 5023
            Quantum Efficiency [%]: 8
            Nominal Gain          : 2e7
            Rise Time         [ps]: 700
            Jitter (Single PE)[ps]: 60
            Field of View Diam ["]: 
            Date Installed        : 1994-01-30
            Date Removed          : 
          Amplifier Type          : 
            Manufacturer          : 
            Model                 : 
            Gain                  : 
            Bandwidth             : 
            Date Installed        : 
            Date Removed          : 
            Additional Information: 
          Signal Processing       : CFD
            Manufacturer          : Tennelec
            Model                 : TC 454
            Date Installed        : 1994-01-30
            Date Removed          : 
            Amplitude Measurement : NO
            Return-Rate Controlled: YES
            Mode of Operation     : SINGLE/FEW PHOTON
            Additional Information: 
          Time of Flight Observ.  : INTERVAL
            Manufacturer          : Stanford Res.
            Model                 : SR 620
            Resolution        [ps]: 4
            Precision         [ps]: 30
            Date Installed        : 1992-05-08
            Date Removed          : 
          Additional Information  : 
 
  6.02.01 Secondary Chain
          Wavelength          [nm]: 532
          Detector Type           : Avalanche Photodiode
            Manufacturer          : RCA
            Model                 : C30902 S-TC
            Quantum Efficiency [%]: 28
            Nominal Gain          : N.A.
            Rise Time         [ps]: 
            Jitter (Single PE)[ps]: 150
            Field of View Diam ["]: 
            Date Installed        : 1992-05-08
            Date Removed          : 1994-01-30
          Amplifier Type          : 
            Manufacturer          : 
            Model                 : 
            Gain                  : 
            Bandwidth             : 
            Date Installed        : 
            Date Removed          : 
            Additional Information: 
          Signal Processing       : CFD
            Manufacturer          : Tennelec
            Model                 : TC 454
            Date Installed        : 1992-05-08
            Date Removed          : 
            Amplitude Measurement : NO
            Return-Rate Controlled: YES
            Mode of Operation     : SINGLE PHOTON
            Additional Information: 
          Time of Flight Observ.  : INTERVAL
            Manufacturer          : Stanford Res.
            Model                 : SR620
            Resolution        [ps]: 4
            Precision         [ps]: 30
            Date Installed        : 1992-05-08
            Date Removed          : 
          Additional Information  : RCA diode used only sparsely for distant
                                  : satellite ranging campaigns (as GPS)
 
  6.02.02 Secondary Chain
          Wavelength          [nm]: 532
          Detector Type           : Avalanche Photodiode
            Manufacturer          : Silicon Sensor
            Model                 : SSO-AD230
            Quantum Efficiency [%]: 25
            Nominal Gain          : N.A.
            Rise Time         [ps]: 190
            Jitter (Single PE)[ps]: 80
            Field of View Diam ["]: 
            Date Installed        : 1998-MM-DD
            Date Removed          : 
          Amplifier Type          : 
            Manufacturer          : 
            Model                 : 
            Gain                  : 
            Bandwidth             : 
            Date Installed        : 
            Date Removed          : 
            Additional Information: 
          Signal Processing       : CFD
            Manufacturer          : Tennelec
            Model                 : TC 454
            Date Installed        : 1992-05-08
            Date Removed          : 
            Amplitude Measurement : NO
            Return-Rate Controlled: YES
            Mode of Operation     : SINGLE PHOTON
            Additional Information: 
          Time of Flight Observ.  : INTERVAL
            Manufacturer          : Stanford Res.
            Model                 : SR620
            Resolution        [ps]: 4
            Precision         [ps]: 30
            Date Installed        : 1992-05-08
            Date Removed          : 
          Additional Information  : SSO diode not used for regular ranging 
 
  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)   : YES
         Low Altitude (400-2000)  : YES
         LAGEOS/LARES             : YES
         GLONASS                  : NIGHT
         Etalon                   : NIGHT
         GNSS                     : NIGHT
         Geosynchronous           : 
         Moon                     : NO
       Ave. Pass Switch Time   [s]: 300
       Average values for LAGEOS
         Single Shot RMS      [mm]: 20
         # of Obs per NP          : 50
         Use of Semi-trains       : NO
         # of Semi-train Tracks   : 3 - 4
       Range Gate Width       [ns]: 50 - 800000
       Beam Pointing Accuracy  ["]: 15
       Angle Encoder Resolution["]: 2
       Min. Tracking Elev.   [deg]: 20
       Laser Polarization @emitter: 
       Operation
         Months per Year          : 12
         Days per Week            : 6
         Hours per Day            : 12
         Staff per Shift          : 1
         System Shared With       : NOTHING
         Time Allocated to SLR [%]: 100
         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      : 1994-06-28 HH:MM UT
       Date Last Applicable       : 2004-06-28 HH:MM UT
       Additional Information     : 
 
 
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  8.   Calibration
 
  8.01 Calibration Type           : PRE+POST
       Target Location            : EXTERNAL WITHIN DOME
       Target Type                : Flat Surface
       Target Structure           : Room  Wall
       Number of Targets          : 
       Target Distance(s)      [m]: 2.5 m
         Date Measured            : N.A.
         Accuracy             [mm]: 3
         Verification             : Target calibrated by Cube Corner Reflector
                                  : in front of the telescope
       Return-Rate Controlled     : YES
       Eye-Safe Method            : 
         Additional Information   : 
       Mode of Operation          : SINGLE/FEW PHOTON
       Calibration performed      : 10
       Single Shot RMS        [mm]: 10
       Edit Criterion 1st Chain   : ITERATIVE 2.5 SIGMA
       Edit Criterion 2nd Chain   : ITERATIVE 2.5 SIGMA
       Application of Cal Data    : AVERAGE
       Date Installed             : 1992-05-08
       Date Removed               : 
       Additional Information     : 
 
 
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  9.   Time and Frequency Standards
 
  9.01.01 Frequency Standard Type : Cesium
          Model                   : HP 5061A
          Manufacturer            : Hewlett Packard
          Short Term Stab.  [e-12]: 
          Long Term Stab.   [e-12]: 
          Time Reference          : GPS
          Synchronization         : GPS
          Epoch Accuracy      [ns]: 100
          Date Installed          : 1993-09-01
          Date Removed            : 1998-12-30
          Additional Information  : Cs standard out at end of 1998 (not replaced)
 
  9.01.02 Frequency Standard Type : GPS/QUARTZ
          Model                   : HP 58503A
          Manufacturer            : Hewlett Packard
          Short Term Stab.  [e-12]: 
          Long Term Stab.   [e-12]: 
          Time Reference          : GPS
          Synchronization         : GPS
          Epoch Accuracy      [ns]: 100
          Date Installed          : 1998-04-DD
          Date Removed            : 
          Additional Information  : 
 
  9.02.01 GNSS Timing Rcvr Model  : 9390
          Manufacturer            : Datum Inc.
          Date Installed          : 1992-05-08
          Date Removed            : 1998-12-30
          Additional Information  : this receiver together with internal Rb
                                  : standard was initially used as frequency
                                  : and time reference
                                  : Since installation of the Cs frequency
                                  : standard it was used to measure the time 
                                  : bias of the 1 pps pulses of the HP 5061.
                                  : Both units were replaced by the HP 58503
                                  :  in 1998
 
  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      : YES
       Data Screening             : IRV+POLYNOMIAL
       Return-Rate Rejection      : 
       Edit Criterion 1st Chain   : ITERATIVE 2.5 SIGMA
       Edit Criterion 2nd Chain   : ITERATIVE 2.5 SIGMA
       Upload interval            : AFTER EACH SHIFT
       Date First Applicable      : 1992-MM-DD HH:MM UT
       Date Last Applicable       : 
       Additional Information     : 
 
 
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 11.   Aircraft Detection
 
 11.01 Detection Type             : MOUNT OBSERVER
       Manufacturer/Provider      : 
       Automatic Laser Shutoff    : 
       Alarms Recorded            : 
       Hazard Distance        [km]: 
       Date Installed             : 1992-05-08
       Date Removed               : 
       Additional Information     : 
 
 
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 12.   Meteorological Instrumentation
 
 12.01.01 Pressure Sensor Model   : mercury station barometer
          Manufacturer            : Fuess ??
          Recording Interval      : PER PASS
          Accuracy          [mbar]: 0.2
          Height Diff to SRP   [m]: -2.5
          Distance from SRP    [m]: 
          Date Installed          : 1992-05-08 HH:MM UT
          Calibration Interval    : every few years
          Date Removed            : 1996-09-16 HH:MM UT
          Additional Information  : 
 
 12.01.02 Pressure Sensor Model   : DPI 141
          Manufacturer            : Druck
          Recording Interval      : PER PASS
          Accuracy          [mbar]: 0.2
          Height Diff to SRP   [m]: -2.28
          Distance from SRP    [m]: 
          Date Installed          : 1996-09-16 HH:MM UT
          Calibration Interval    : every few years
          Date Removed            : 
          Additional Information  : 
 
 12.02.01 Temp Sensor Model       : TM-200
          Manufacturer            : TIMETEC
          Recording Interval      : PER PASS
          Accuracy         [deg C]: 0.25 deg
          Date Installed          : 1996-09-16 HH:MM UT
          Calibration Interval    : SEVERAL YEARS
          Date Removed            : 
          Additional Information  : part of a PRARE meteo station
 
 12.03.01 Humidity Sensor Model   : TM-200
          Manufacturer            : TIMETEC
          Recording Interval      : PER PASS
          Accuracy       [% rel h]: 1 %
          Date Installed          : 1996-09-16 HH:MM UT
          Calibration Interval    : SEVERAL YEARS
          Date Removed            : 
          Additional Information  : part of a PRARE meteo station
 
 
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 13.   Local Ties, Eccentricities, and Collocation Information
 
 13.01 Collocated Permanent Geodetic Systems
 
 13.01.01.01 GNSS                 : IGS/EUREF
             Date Installed       : 1994-10-14
             Date Removed         : 
             Additional Info      : 
 13.01.01.02 GNSS                 : NO
             Date Installed       : 
             Date Removed         : 
             Additional Info      : 
 13.01.02.01 DORIS                : NO
             Date Installed       : 
             Date Removed         : 
             Additional Info      : 
 13.01.03.01 PRARE                : YES
             Date Installed       : 1994-09-DD
             Date Removed         : 1998-12-DD
             Additional Info      : 
 13.01.04.01 VLBI                 : NO
             Date Installed       : 
             Date Removed         : 
             Additional Info      : 
 13.01.05.01 Gravimeter           : SUPERCONDUCTING (SLG)
             Date Installed       : 1992-06-01
             Date Removed         : 1998-10-30
             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           : GPS Potsdam
          Instrumentation Type    : GPS
          Instrumentation Status  : PERMANENT
          DOMES Number            : 14106M003
          CDP Number              : 
          Differential Components (ITRS)
            dx                 [m]: 50.091 +- 0.005
            dy                 [m]: 95.218 +- 0.005
            dz                 [m]: -40.439 +- 0.005
            Date Measured         : 1994-08-09
            Determined by         : 
          Date Installed          : 1994-10-14
          Date Removed            : 
          Additional Information  : (multiple lines)
 
 13.02.02.01 Local Ties from the SRP to Other Monuments or Systems on Site
 
          Monument Name           : PRARE Potsdam
          Instrumentation Type    : PRARE
          Instrumentation Status  : PERMANENT
          DOMES Number            : 
          CDP Number              : 7730
          Differential Components (ITRS)
            dx                 [m]: -47.481 +- 0.005
            dy                 [m]: -57.390 +- 0.005
            dz                 [m]: 72.106 +- 0.005
            Date Measured         : 1994-04-13
            Determined by         : 
          Date Installed          : 1994-09-DD
          Date Removed            : 1998-12-DD
          Additional Information  : 
 
 13.03.01.01 Eccentricities Between Other Monuments on Site
 
          From: Monument Name     : SLR Potsdam
                DOMES Number      : 14106S009
                CDP Number        : 7836
          To:   Monument Name     : SBG Potsdam
                DOMES Number      : 
                CDP Number        : 1181
          Differential Components (ITRS)
            dx                 [m]: -18.499 +- 0.005
            dy                 [m]: 23.424 +- 0.005
            dz                 [m]: 27.959 +- 0.005
            Date Measured         : 1994-04-13
            Determined by         : 
          Additional Information  : SBG Potsdam is the former SLR station
 
 
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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                     : GeoForschungsZentrum Potsdam
       Mailing Address            : Telegrafenberg
                                  : D-14473 Potsdam
       Website                    : 
       Primary Contact
         Contact Name             : Ludwig Grunwaldt
         Telephone (primary)      : +49/331/288-1733
         Telephone (secondary)    : +49/331/288-1164
         Fax                      : +49/331/288-1169
         E-mail                   : grun@gfz-potsdam.de
       Secondary Contact
         Contact Name             : Stefan Weisheit
         Telephone (primary)      : +49/331/288-1522
         Telephone (secondary)    : +49/331/288-1164
         Fax                      : 
         E-mail                   : weisheit@gfz-potsdam.de
       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   : http://www.gfz-potsdam.de/en/research/
                                  : organizational-units/departments-of-the-gfz/
                                  : department-1/global-geomonitoring-and-gravity
                                  : -field/topics/earth-system-parameters-and-
                                  : orbit-dynamics/history-of-satellite-laser-
                                  : ranging-in-potsdam/
       Hardcopy on File
         Site Map                 : NO
         Site Diagram             : NO
         Horizon Mask             : NO
         Monument Description     : NO
         Site Pictures            : NO
       Additional Information     : 
 
 
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