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ILRS Home  Stations Site Listing Potsdam
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Potsdam: 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) : Harald Fischer, Reinhart Neubert
and Ludwig Gruwaldt
Preparer E-mail : fisch@gfz-potsdam.de
neub@gfz-potsdam.de
grun@gfz-potsdam.de
Date Prepared : 2002-05-09
Report Type : UPDATE
Format Version : 1.0
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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 : N.A.
Monument Inscription : N.A.
Mark Description : N.A.
Date Installed : 1992-05-08
Date Removed : (yyyy-mm-dd)
Geologic Characteristic : SAND
Additional Information : BRASS NAIL (2) in pillar below telescope
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2. Site Location Information
City or Town : Potsdam
State or Province : Brandenburg
Country : Germany
Tectonic Plate : Eurasian
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
Additional Information : (multiple lines)
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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]: 0
East [m]: 0
Up [m]: 0
Date Measured : N.A.
Date Installed : 1992-05-08
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
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4. Telescope Information
4.01 Receiving Telescope Type : CASSEGRAIN/MANGIN
Aperture [m]: 1
Mount : AZ-EL
Xmitting Telescope Type : N.A.
Aperture [m]:
Tracking Camera Type : MCP Image Intensifier + CCD
Model : Proxicam
Manufacturer : Proxitronic
Field of View [deg]: 0.3
Minimum Magnitude [mag]: 12
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]: 0.3
Adjustable Attenuation : RECEIVE
Transmit Efficiency : 0.5
Receive Efficiency : 0.2
Date Installed : 1992-05-08
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
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5. Laser System Information
5.01 Laser Type : ND:YAG
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
Pulse Width (FWHM) [ps]: 35
Max. Repetition Rate [Hz]: 10
Fullw. Beam Divergence ["]: 10 - 60
Final Beam Diameter [m]: 1
Eyesafe : NO
Eyesafe Standard : ANSI 136.1
Date Installed : 1992-05-08
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
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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 : 2E6
Rise Time [ps]: 700
Jitter (Single PE)[ps]: 60
Field of View ["]: unknown
Date Installed : 1994-01-30
Date Removed : (yyyy-mm-dd)
Signal Processing : CFD
Manufacturer : Tennelec
Model : TC454
Date Installed : 1994-01-30
Date Removed : (yyyy-mm-dd)
Amplitude Measurement : NO
Return-rate Controlled: YES
Mode of Operation : Single to Multi Photons
Time of Flight Observ. : INTERVAL
Manufacturer : Stanford
Model : 620
Resolution [ps]: 4
Precision [ps]: 30
Date Installed : 1992-05-08
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
6.02.01 Secondary Chain
Wavelength [nm]: 532
Detector Type : APD
Manufacturer : RCA
Model : C30902 S-TC
Quantum Efficiency [%]: 28
Nominal Gain : N.A.
Rise Time [ps]:
Jitter (Single PE)[ps]: 150
Field of View ["]:
Date Installed : 1992-05-08
Date Removed : 1994-01-30
Signal Processing : CFD
Manufacturer : Tennelec
Model : TC454
Date Installed : 1992-05-08
Date Removed : (yyyy-mm-dd)
Amplitude Measurement : NO
Return-rate Controlled: YES
Mode of Operation : Single Photon
Time of Flight Observ. : INTERVAL
Manufacturer : Stanford
Model : 620
Resolution [ps]: 4
Precision [ps]: 30
Date Installed : 1992-05-08
Date Removed : (yyyy-mm-dd)
Additional Information : RCA diode used only sparsely for distant satellite
ranging campaigns (as GPS)
6.02.02 Secondary Chain
Wavelength [nm]: 532
Detector Type : APD
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 ["]:
Date Installed : 1998-01-01
Date Removed : (yyyy-mm-dd)
Signal Processing : CFD
Manufacturer : Tennelec
Model : TC454
Date Installed : 1992-05-08
Date Removed : (yyyy-mm-dd)
Amplitude Measurement : NO
Return-rate Controlled: YES (manual)
Mode of Operation : Single Photon
Time of Flight Observ. : INTERVAL
Manufacturer : Stanford
Model : 620
Resolution [ps]: 4
Precision [ps]: 30
Date Installed : 1992-05-08
Date Removed : (yyyy-mm-dd)
Additional Information : SSO diode not used for regular ranging
yet
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7. Tracking Capabilities
7.01 Satellites
Very Low Alt (<400 km) : YES
Low Altitude (400-2000) : YES
Lageos : YES
GLONASS : NIGHT
Etalon : NIGHT
GPS : NIGHT
Moon : NO
Avge Pass Switch Time [s]: 300
Average values for Lageos
Single Shot RMS [mm]: 20
# of Obs per NP : 50
Use of Semi-trains : YES
# of Semi-train Tracks : 3 - 4
Range Gate Width [ns]: 50 - 800
Beam Pointing Accuracy ["]: 15
Angle Encoder Resolution["]: 2
Min. Tracking Elev. [deg]: 20
Operation
Months per Year : 12
Days per Week : 6
Hours per Day : 24
Staff per Shift : 1
System Shared With : NOTHING
Time Allocated to SLR [%]: 100
Remotely Controllable : NO
Date First Applicable : 1994-06-28
Date Last Applicable : (yyyy-mm-dd)
Additional Information : minimum tracking elevation to
the west is 35 degrees
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8. Calibration
8.01 Calibration Type : POST/PRE+POST
Target Location : EXTERNAL
Target Type : Flat Surface
Target Structure : Room Wall
Target Distance [m]: 2.5 m
Date Measured : not measured (see. Verification)
Accuracy (mm) [mm]: 3
Verification : Target calibrated by Cube Corner Reflector
in front of the telescope, once per year
Return-rate Controlled : YES
Mode of Operation : SINGLE/FEW PHOTON
Average Cal Interval [min]: 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 : (yyyy-mm-dd)
Additional Information : (multiple lines)
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9. Time and Frequency Standards
9.01.01 Frequency Standard Type : Oven Controlled Crystal Oscillator
Model : 58503A
Manufacturer : HP
Short Term Stab. [e-12]: 5
Long Term Stab. [e-12]: 1
Time Reference : GPS
Synchronization : GPS
Epoch Accuracy [ns]: 100
Date Installed : 1998-04-01
Date Removed : (yyyy-mm-dd)
Additional Information : parallel operation with Cs- Standard
until end of 1998
9.01.02 Frequency Standard Type : Cesium
Model : 5061A
Manufacturer : HP
Short Term Stab. [e-12]: 10
Long Term Stab. [e-12]: 0.1
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
9.02.01 GPS Timing Rcvr Model : 58503A
Manufacturer : HP
Date Installed : 1998-04-01
Date Removed : (yyyy-mm-dd)
Additional Information :
9.02.02 GPS Timing Rcvr Model : 9390
Manufacturer : Datum
Date Installed : 1992-05-08
Date Removed : 1998-12-30
Additional Information : This receiver together with an internal Rb
standard was initially used as freqency
and time reference. Since installation of
the Cs frequency standard it was used to
measure the time bias of the 1 pps pulses.
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10. Preprocessing Information
10.01 On-site NP Generation : YES
Data Screening : IRV+POLYNOMIAL
Edit Criterion 1st Chain : ITERATIVE 2.5 SIGMA
Edit Criterion 2nd Chain : ITERATIVE 2.5 SIGMA
Upload interval : AFTER EACH SHIFT
Date First Applicable : 1993-01-02
Date Last Applicable : (yyyy-mm-dd)
Additional Information : (multiple lines)
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11. Aircraft Detection
11.01 Detection Type : MOUNT OBSERVER
Date Installed : 1992-05-08
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
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12. Meteorological Instrumentation
12.01.01 Pressure Sensor Model : DPI 141
Manufacturer : Druck Ltd.
Recording Interval : PER PASS
Accuracy [mbar]: 0.2
Height Diff to SRP [m]: -2.28
Date Installed : 1996-09-16
Calibration Interval : EVERY FEW YEARS
Date Removed : (yyyy-mm-dd hh:mm UT)
Additional Information : (multiple lines)
12.01.02 Pressure Sensor Model : mercury station barometer
Manufacturer : Glaswerke Ilmenau, D
Recording Interval : PER PASS
Accuracy [mbar]: 0.2
Height Diff to SRP [m]: -2.5
Date Installed : 1992-05-08
Calibration Interval : EVERY FEW YEARS
Date Removed : 1996-09-16
Additional Information : (multiple lines)
12.02.01 Temp Sensor Model : TM-200
Manufacturer : TIMETEC
Recording Interval : PER PASS
Accuracy [deg C]: 0.25
Date Installed : 1996-09-16
Calibration Interval : EVERY FEW YEARS
Date Removed : (yyyy-mm-dd hh:mm UT)
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
Calibration Interval : EVERY FEW YEARS
Date Removed : (yyyy-mm-dd hh:mm UT)
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
GPS : IGS+EUREF
Date Installed : 1994-10-14
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 : YES
Date Installed : 1994-09-01
Date Removed : 1998-12-01
Additional Information : (multiple lines)
VLBI : NO
Date Installed : (yyyy-mm-dd)
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
Gravimeter : SUPERCONDUCTING (SLG)
Date Installed : 1992-06-01
Date Removed : 1998-10-30
Additional Information : (multiple lines)
13.02.01 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 : (XXXX)
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 : (yyyy-mm-dd)
Additional Information : vector from SLR to GPS
13.02.02 Local Ties from the SRP to Other Monuments or Systems on Site
Monument Name : PRARE Potsdam
Instrumentation Type : PRARE
Instrumentation Status : PERMANENT
DOMES Number : (XXXXXXXXX)
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 : 1994-09-01
Date Removed : 1998-12-01
Additional Information : vector from SLR to PRARE
13.03.01 Eccentricities Between Other Monuments on Site
From: Monument Name : SLR Potsdam
DOMES Number : 14106S009
CDP Number : 7836
To: Monument Name : SBG Potsdam
DOMES Number : 14106S001
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 : (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 : GeoForschungsZentrum Potsdam
Mailing Address : Telegrafenberg
D-14473 Potsdam
Primary Contact
Contact Name : Harald Fischer
Telephone (primary) : +49/331/288-1152
Telephone (secondary) : +49/331/288-1156 (SLR station)
Fax : +49/331/288-1759
E-mail : fisch@gfz-potsdam.de
Secondary Contact
Contact Name : Ludwig Grunwaldt
Telephone (primary) : +49/331/288-1733
Telephone (secondary) : +49/331/288-1156
Fax : +49/331/288-1732
E-mail : grun@gfz-potsdam.de
Additional Information : (multiple lines)
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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 : http://www.gfz-potsdam.de/pb1/SLR/slr.htm
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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