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ILRS Home  Stations Site Listing Herstmonceux
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Herstmonceux: 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) : Philip Gibbs
Preparer E-mail : pgib@nerc.ac.uk
Date Prepared : 2004-10-04
Report Type : UPDATE
Format Version : 1.0
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1. Identification of the Ranging System Reference Point (SRP)
Site Name : Herstmonceux
IERS DOMES Number : 13212S001
CDP Pad ID : 7840
Subnetwork : EUROLAS
Description : AZ EL INTERSECT
Monument Description : N.A.
Monument Inscription : N.A.
Mark Description : N.A.
Date Installed : 1982-01-01
Date Removed : (yyyy-mm-dd)
Geologic Characteristic : CLAYS/SANDSTONES
Additional Information : Local geology: The site is bounded to the
south by old, but now drained, marshland
with the English Channel about 6 km away.
The underlying structure is interbedded
clays and sandstones called the Hastings
Beds. There is no history of seismic
activity in the area.
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2. Site Location Information
City or Town : Hailsham
State or Province : East Sussex
Country : UK
Tectonic Plate : Eurasian
Approximate Position
X coordinate [m]: 4033463.1
Y coordinate [m]: 23662.8
Z coordinate [m]: 4924305.6
Latitude [deg]: 50.8674 N
Longitude [deg]: 0.3361 E
Elevation [m]: 75
Additional Information : The site is located in the grounds of
Herstmonceux Castle
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3. General System Information
3.01 System Name : Herstmonceux
4-Character Code : HERL
CDP System Number : 35
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 : 1982-01-01
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
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4. Telescope Information
4.01 Receiving Telescope Type : CASSEGRAIN
Aperture [m]: 0.5
Mount : AZ-EL
Xmitting Telescope Type : REFRACTOR
Aperture [m]: 0.1
Tracking Camera Type : TV thro main tel / TV on Celestron
Model :
Manufacturer :
Field of View [deg]: 0.06 / 0.6
Minimum Magnitude [mag]: ~10 / ~8
Transmit/Receive Path : SEPARATE
Transmit/Receive Switch : NONE
Max Slew Rate Az [deg/s]: 20
Max Slew Rate El [deg/s]: 5
Max Used Tracking Rate Az : 20
Max Used Tracking Rate El : 5
Telescope Shelter : EYE-LID DOME, see additional information
Daylight Filter Type : Oven controlled spectral filter
Dayl. Filt. Bandwidth [nm]: 0.15
Adjustable Attenuation : NO
Transmit Efficiency : 0.7
Receive Efficiency : 0.7
Date Installed : 1998-06-26
Date Removed : (yyyy-mm-dd)
Additional Information : The dome's hemisphere is divided into 4
segments (like segments of an orange) the
bottom two of which are fixed to a circular
rail and the top two open by sliding over the
bottom two. The whole structure can be
rotated manually, normally only necessary to
protect the telescope/observer from the wind
since this scheme means that all the sky
above 30 degrees elevation is available with
the dome in any position. In normal operation
the lowest part of the opening are East and
West to provide access to the ground targets.
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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]: Not used for ranging
Secondary Wavelength [nm]: 532
Secondary Max. Energy [mJ]: ~20
Xmit Energy Adjustable : NO
Pulse Width (FWHM) [ps]: ~100
Max. Repetition Rate [Hz]: 13
Fullw. Beam Divergence ["]: 5-200
Final Beam Diameter [m]: 0.03
Eyesafe : NO
Eyesafe Standard : British Standard 4803
Date Installed : 1982-01-01
Date Removed : (yyyy-mm-dd)
Additional Information : An observer is always present at the
telescope during ranging and using a slaved
radar system to detect aircraft close to
the beam and kill the laser. For terrestrial
calibration we insert a very large ND filter
to render the beam eyesafe.
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6. Receiver System
6.01.01 Primary Chain
Wavelength [nm]: 532
Detector Type : CSPAD
Manufacturer : PESO Consulting
Model :
Quantum Efficiency [%]: ~20
Nominal Gain :
Rise Time [ps]: 1500
Jitter (Single PE)[ps]: 30
Field of View ["]: 100 microns - see additional information
Date Installed : 1999-07-30
Date Removed : 2001-01-03
Signal Processing : N.A.
Manufacturer :
Model :
Date Installed : (yyyy-mm-dd)
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 : 1995-01-01
Date Removed : (yyyy-mm-dd)
Additional Information : We have 4 Stanford counters of varying
ages - for details of usage see SCH and
SCI files. Our telescope has a field of
view of 10 arc minutes. However this is
reduced to a maximum of 250 arcsecs
because of an iris in the light path.
For normal daytime observing we reduce
the iris size to 50 arcsecs. For normal
night observing we use a 100 arcsecs iris.
Whichever iris we use, the light is
focused onto the detector.
6.01.02 Primary Chain
Wavelength [nm]: 532
Detector Type : SPAD3b
Manufacturer : PESO Consulting
Model :
Quantum Efficiency [%]: ~20
Nominal Gain :
Rise Time [ps]: 1500
Jitter (Single PE)[ps]: 30
Field of View ["]: 100 microns - see additional information
Date Installed : 2001-01-03
Date Removed : 2001-01-24
Signal Processing : N.A.
Manufacturer :
Model :
Date Installed : (yyyy-mm-dd)
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 : 1995-01-01
Date Removed : (yyyy-mm-dd)
Additional Information : We have 4 Stanford counters of varying
ages - for details of usage see SCH and
SCI files. Our telescope has a field of
view of 10 arc minutes. However this is
reduced to a maximum of 250 arcsecs
because of an iris in the light path.
For normal daytime observing we reduce
the iris size to 50 arcsecs. For normal
night observing we use a 100 arcsecs iris.
Whichever iris we use, the light is
focused onto the SPAD diode.
6.01.03 Primary Chain
Wavelength [nm]: 532
Detector Type : CSPAD
Manufacturer : PESO Consulting
Model :
Quantum Efficiency [%]: ~20
Nominal Gain :
Rise Time [ps]: 1500
Jitter (Single PE)[ps]: 30
Field of View ["]: 100 microns - see additional information
Date Installed : 2001-01-24
Date Removed : 2002-10-04
Signal Processing : N.A.
Manufacturer :
Model :
Date Installed : (yyyy-mm-dd)
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 : 1995-01-01
Date Removed : (yyyy-mm-dd)
Additional Information : We have 4 Stanford counters of varying
ages - for details of usage see SCH and
SCI files. Our telescope has a field of
view of 10 arc minutes. However this is
reduced to a maximum of 250 arcsecs
because of an iris in the light path.
For normal daytime observing we reduce
the iris size to 50 arcsecs. For normal
night observing we use a 100 arcsecs iris.
Whichever iris we use, the light is
focused onto the detector.
6.01.04 Primary Chain
Wavelength [nm]: 532
Detector Type : SPAD3b
Manufacturer : PESO Consulting
Model :
Quantum Efficiency [%]: ~20
Nominal Gain :
Rise Time [ps]: 1500
Jitter (Single PE)[ps]: 30
Field of View ["]: 100 microns - see additional information
Date Installed : 2002-10-04
Date Removed : 2002-10-16
Signal Processing : N.A.
Manufacturer :
Model :
Date Installed : (yyyy-mm-dd)
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 : 1995-01-01
Date Removed : (yyyy-mm-dd)
Additional Information : We have 4 Stanford counters of varying
ages - for details of usage see SCH and
SCI files. Our telescope has a field of
view of 10 arc minutes. However this is
reduced to a maximum of 250 arcsecs
because of an iris in the light path.
For normal daytime observing we reduce
the iris size to 50 arcsecs. For normal
night observing we use a 100 arcsecs iris.
Whichever iris we use, the light is
focused onto the SPAD diode.
6.01.05 Primary Chain
Wavelength [nm]: 532
Detector Type : CSPAD
Manufacturer : PESO Consulting
Model :
Quantum Efficiency [%]: ~20
Nominal Gain :
Rise Time [ps]: 1500
Jitter (Single PE)[ps]: 30
Field of View ["]: 100 microns - see additional information
Date Installed : 2002-10-16
Date Removed : (yyyy-mm-dd)
Signal Processing : N.A.
Manufacturer :
Model :
Date Installed : (yyyy-mm-dd)
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 : 1995-01-01
Date Removed : (yyyy-mm-dd)
Additional Information : We have 4 Stanford counters of varying
ages - for details of usage see SCH and
SCI files. Our telescope has a field of
view of 10 arc minutes. However this is
reduced to a maximum of 250 arcsecs
because of an iris in the light path.
For normal daytime observing we reduce
the iris size to 50 arcsecs. For normal
night observing we use a 100 arcsecs iris.
Whichever iris we use, the light is
focused onto the detector.
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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 : NIGHT
Moon : NO
Avge Pass Switch Time [s]: ~30
Average values for Lageos
Single Shot RMS [mm]: 16
# of Obs per NP : 150
Use of Semi-trains : YES
# of Semi-train Tracks : 4
Range Gate Width [ns]: 200-30000 see additional info
Beam Pointing Accuracy ["]: 2
Angle Encoder Resolution["]: 2
Min. Tracking Elev. [deg]: 30 in daylight 25 during nighttime
Operation
Months per Year : 12
Days per Week : 7
Hours per Day : ~20
Staff per Shift : 1
System Shared With : NOTHING
Time Allocated to SLR [%]: 100
Remotely Controllable : NO
Date First Applicable : 1982-01-01
Date Last Applicable : (yyyy-mm-dd)
Additional Information : If we use no ND then the daytime limit is of order
600ns. However for low satellites we can put in
considerable ND and use a range gate of 3000ns. In
practice we will keep a small range gate <500ns for low
satellites and using time bias corrections bring the
satellite into the range gate.
At night time we can have a RG of 30000ns
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8. Calibration
8.01 Calibration Type : PRE+POST
Target Location : EXTERNAL
Target Type : see additional information
Target Structure : BRICK BUILDING, see additional information
Target Distance [m]: 120
Date Measured : 1993-06-09 -remeasured 2002
Accuracy (mm) [mm]: 2-3
Verification : 4 other targets
Return-rate Controlled : YES
Mode of Operation : SINGLE
Average Cal Interval [min]: 60 see additional information
Single Shot RMS [mm]: 9
Edit Criterion 1st Chain : ITERATIVE 2.5 SIGMA
Edit Criterion 2nd Chain : N.A.
Application of Cal Data : LINEAR FIT
Date Installed : 1982-01-01
Date Removed : (yyyy-mm-dd)
Additional Information : Targets are made of two polished steel
sheets at right angles so as to
translate the beam horizontally from
the emitter telescope to the receiving
telescope. The 2 polished sheets are
mounted on brick building about 30 feet
above the ground, 120m from dome. A
secondary target of 2 polished sheets is
mounted on standard concrete survey
pillar about 3 feet above the ground
at 600m.
We will always attempt to get calibrations
before and after satellite but when there
are several satellites back-to-back we will
calibrate before and after the batch. The
realtime system gives alarm messages should
the time since last calibration exceed 60
minutes
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9. Time and Frequency Standards
9.01.01 Frequency Standard Type : Crystal Oscillator
Model : 2110
Manufacturer : Austron
Short Term Stab. [e-12]: <3
Long Term Stab. [e-12]: 1
Time Reference : GPS
Synchronization : GPS
Epoch Accuracy [ns]: 100-300
Date Installed : 1996-06-19
Date Removed : (yyyy-mm-dd)
Additional Information : Epoch accuracy not measured explicitly.
A 10 MHz signal from the Datum GPS
receiver is feed to the Austron
Disciplined Frequency and that output
is used for our time interval frequency.
9.02.01 GPS Timing Rcvr Model : 9390-52133
Manufacturer : Datum
Date Installed : 1995-01-01
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
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10. Preprocessing Information
10.01 On-site NP Generation : YES
Data Screening : Orbit solution (SOLVE) + Gaussian fit
Edit Criterion 1st Chain : 3.0 SIGMA
Edit Criterion 2nd Chain : N.A.
Upload interval : ASAP - normally within 60mins
Date First Applicable : 1982-01-01
Date Last Applicable : (yyyy-mm-dd)
Additional Information : (multiple lines)
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11. Aircraft Detection
11.01 Detection Type : RADAR
Date Installed : 1984-01-01 Upgraded 2003
Date Removed : (yyyy-mm-dd)
Additional Information : Observer always on the observing
platform during ranging to satellites
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12. Meteorological Instrumentation
12.01.01 Pressure Sensor Model : DPI 141
Manufacturer : Druck
Recording Interval : EVERY 5 MINUTES
Accuracy [mbar]: 0.15
Height Diff to SRP [m]: 0
Date Installed : 1999-06-29
Calibration Interval : see below
Date Removed : (yyyy-mm-dd hh:mm UT)
Additional Information : Pressures continuously compared with
results from second Druck and with local
mercury and Met Office barometers
12.02.01 Temp Sensor Model : HMP 140
Manufacturer : Vaisala
Recording Interval : EVERY 5 MINUTES
Accuracy [deg C]: 0.1
Date Installed : 1997-07-04
Calibration Interval : see below
Date Removed : 2001-12-18
Additional Information : Temperatures continuously compared with
results from another temperature sensor
and with local Met Office readings
12.02.02 Temp Sensor Model : MP103A-T7-W4W
Manufacturer : Rotronics
Recording Interval : EVERY 5 MINUTES
Accuracy [deg C]: 0.1
Date Installed : 2001-12-18
Calibration Interval : see below
Date Removed : (yyyy-mm-dd hh:mm UT)
Additional Information : Temperatures continuously compared with
results from another temperature sensor
and with local Met Office readings
12.03.01 Humidity Sensor Model : HMP 140
Manufacturer : Vaisala
Recording Interval : EVERY 5 MINUTES
Accuracy [% rel h]: 5
Date Installed : 1996-06-19
Calibration Interval : see below
Date Removed : 2001-12-18
Additional Information : Relative humidities continuously compared
with results from another device and with
local Met Office readings
12.03.02 Humidity Sensor Model : MP103A-T7-W4W
Manufacturer : Rotronics
Recording Interval : EVERY 5 MINUTES
Accuracy [% rel h]: 1.5
Date Installed : 2001-12-18
Calibration Interval : see below
Date Removed :
Additional Information : Relative humidities continuously compared
with results from another device and with
local Met Office readings
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13. Local Ties, Eccentricities, and Collocation Information
13.01 Collocated Permanent Geodetic Systems
GPS : IGS+EUREF
Date Installed : (yyyy-mm-dd)
Date Removed : (yyyy-mm-dd)
Additional Information : (multiple lines)
GLONASS : IGS+EUREF+IGLOS
Date Installed : 2003-03-01
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)
etc
13.02.01 Local Ties from the SRP to Other Monuments or Systems on Site
Monument Name : HERS
Instrumentation Type : GPS
Instrumentation Status : PERMANENT
DOMES Number : 13212M007
CDP Number : (XXXX)
Differential Components (ITRS)
dx [m]: +6.505 +- 0.002
dy [m]: +10.278 +- 0.002
dz [m]: -3.945 +- 0.002
Date Measured : 1992-07-29
Determined by : UK Ordnance Survey
Date Installed : 1998-07-01
Date Removed : (yyyy-mm-dd)
Additional Information : IGS code for the GPS is HERS
13.02.02 Local Ties from the SRP to Other Monuments or Systems on Site
Monument Name : HERT
Instrumentation Type : GPS+GLONASS
Instrumentation Status : PERMANENT
DOMES Number : 13212M010
CDP Number : (XXXX)
Differential Components (ITRS)
dx [m]: -2.674 +- 0.002
dy [m]: -124.815 +- 0.002
dz [m]: +12.995 +- 0.002
Date Measured : 2003-03-12
Determined by : GPS CAMPAIGN/TRIANGULATION
Date Installed : 2003-03-01
Date Removed : (yyyy-mm-dd)
Additional Information : IGS code for the GPS is HERT
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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 : Natural Environment Research Council
Mailing Address : NERC Space Geodesy Facility
Herstmonceux Castle
Hailsham
East Sussex BN27 1RN
Primary Contact
Contact Name : Dr Graham Appleby
Telephone (primary) : +44 (0)1323 833888
Telephone (secondary) : +44 (0)1487 772477
Fax : +44 (0)1323 833929/+44 (0)1487773467
E-mail : gapp@nerc.ac.uk
Secondary Contact
Contact Name : Philip Gibbs
Telephone (primary) : +44 (0)1323 833888
Telephone (secondary) :
Fax : +44 (0)1323 833929
E-mail : pgib@nerc.ac.uk
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://nercslr.nmt.ac.uk/
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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