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Changchun: 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) : Han Xingwei
Preparer E-mail : hanxw@cho.ac.cn
Date Prepared : 2024-03-12
Report Type : UPDATE
Site Log Format Version : 2.0
Site Log Revision : 20190616
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1. Identification of the Ranging System Reference Point (SRP)
Site Name : Changchun
IERS DOMES Number : 21611S001
CDP Pad ID : 7237
Subnetwork : WPLTN
Description : AZ EL INTERSECT
Monument Description : N.A.
Monument Inscription : N.A.
Mark Description : N.A.
Date Installed : 1983-01-01
Date Removed :
Geologic Characteristic : BEDROCK
Additional Information :
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2. Site Location Information
City or Town : Changchun
State or Province : Jilin
Country : P.R.China
Tectonic Plate : Eurasian
Local Time (UTC +/- hours) : 8
Approximate Position
X coordinate [m]: -2674387.0
Y coordinate [m]: 3757189.0
Z coordinate [m]: 4391508.0
Latitude [deg]: 43.7905 N
Longitude [deg]: 125.4434 E
Elevation [m]: 274.900
Survey Method :
Date Measured :
Additional Information :
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3. General System Information
3.01 System Name : CHALAS
4-Character Code : CHAL
CDP System Number : 19
CDP Occupation Number : 01
Eccentricity to SRP (if Not Identical With SRP)
North [m]:
East [m]:
Up [m]:
Date Measured : N.A.
Date Installed : 1988-01-01
Date Removed :
Additional Information :
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4. Telescope Information
4.01 Receiving Telescope Type : CASSEGRAIN
Aperture [m]: 0.60
Mount : AZ-EL
Date Installed : 1983-01-01
Date Removed :
Xmitting Telescope Type : GALILEO
Aperture [m]: 0.21
Date Installed : 2007-07-02
Date Removed :
Tracking Camera Type : CCD
Model : 120N+
Manufacturer : Watec/Japan
Field of View [deg]: 0.05
Minimum Magnitude [mag]: 13
Date Installed : 2010-04-01
Date Removed :
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 : 15
Max Used Tracking Rate El : 5
Telescope Shelter : SEALED DOME
Daylight Filter Type : Oven controlled spectral filter
Dayl. Filt. Bandwidth [nm]: 0.15
Adjustable Attenuation : NO
Adjustable Field of View : YES:23-420
Transmit Efficiency :
Receive Efficiency :
Date Installed : 1983-01-01
Date Removed :
Additional Information :
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5. Laser System Information
5.01 Laser Type : ND:YAG
Model : N.A.
Manufacturer : CETC
Number of Amplifiers : 3
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]: 250
Secondary Wavelength [nm]: 532
Secondary Max. Energy [mJ]: 150
Xmit Energy Adjustable : NO
Additional Information :
Pulse Width (FWHM) [ps]: 200
Max. Repetition Rate [Hz]: 20
Fullw. Beam Divergence ["]: 10 - 30
Theoretical Beam Div : 82.5
Measured Beam Div :
Method Used :
Additional Information :
Final Beam Diameter [m]: 0.048
Eyesafe : NO
Eyesafe Standard : N.A.
Polarization on Exit : LINEAR
Laser Fire Control : CONTROLLED
Laser Energy Monitor : OCCASSIONAL
Start Diode Type : Silicon
Manufactorer : thorlabs
Model : FDS025
Quantum Efficiency [%]:
Rise/Fall Time [ps]: 47/240
Date Installed : 2007-04-01
Date Removed :
Signal Processing : TC454
Manufacturer : Canberra
Model : CFD
Date Installed : 1992-08-16
Date Removed :
Additional Information :
Date Installed : 2007-04-01
Date Removed : 2009-07-20
Additional Information :
5.02 Laser Type : ND:YAG
Model : RL-532
Manufacturer : Photonics Industries, USA
Number of Amplifiers : 1
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]: N.A.
Secondary Wavelength [nm]: 532
Secondary Max. Energy [mJ]: 1.0
Xmit Energy Adjustable : NO
Additional Information :
Pulse Width (FWHM) [ps]: 50
Max. Repetition Rate [Hz]: 1000
Fullw. Beam Divergence ["]: 82.5
Theoretical Beam Div :
Measured Beam Div :
Method Used :
Additional Information :
Final Beam Diameter [m]: 0.06
Eyesafe : NO
Eyesafe Standard : N.A.
Polarization on Exit : LINEAR
Laser Fire Control : CONTROLLED
Laser Energy Monitor : OCCASSIONAL
Start Diode Type : Silicon
Manufactorer : thorlabs
Model : FDS025
Quantum Efficiency [%]:
Rise/Fall Time [ps]: 47/240
Date Installed : 2007-04-01
Date Removed :
Signal Processing : TC454
Manufacturer : Canberra
Model : CFD
Date Installed : 1992-08-16
Date Removed :
Additional Information :
Date Installed : 2009-07-21
Date Removed : 2017-08-16
Additional Information :
5.03 Laser Type : ND:YAG
Model :
Manufacturer :
Number of Amplifiers : 1
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]: N.A.
Secondary Wavelength [nm]: 532
Secondary Max. Energy [mJ]: 1.3
Xmit Energy Adjustable : YES
Additional Information :
Pulse Width (FWHM) [ps]: 50
Max. Repetition Rate [Hz]: 1000
Fullw. Beam Divergence ["]: 122
Theoretical Beam Div :
Measured Beam Div :
Method Used :
Additional Information :
Final Beam Diameter [m]: 0.04
Eyesafe : NO
Eyesafe Standard : N.A.
Polarization on Exit : LINEAR
Laser Fire Control : CONTROLLED
Laser Energy Monitor : OCCASSIONAL
Start Diode Type : Silicon
Manufactorer : thorlabs
Model : FDS025
Quantum Efficiency [%]:
Rise/Fall Time [ps]: 47/240
Date Installed : 2007-04-01
Date Removed :
Signal Processing : TC454
Manufacturer : Canberra
Model : CFD
Date Installed : 1992-08-16
Date Removed :
Additional Information :
Date Installed : 2017-08-16
Date Removed : 2018-03-21
Additional Information : (for test)
5.04 Laser Type : ND:YAG
Model :
Manufacturer : Daheng Optics
Number of Amplifiers : 1
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]: N.A.
Secondary Wavelength [nm]: 532
Secondary Max. Energy [mJ]: 1
Xmit Energy Adjustable : NO
Additional Information :
Pulse Width (FWHM) [ps]: 50
Max. Repetition Rate [Hz]: 1000
Fullw. Beam Divergence ["]: 82.5
Theoretical Beam Div :
Measured Beam Div :
Method Used :
Additional Information :
Final Beam Diameter [m]: 0.06
Eyesafe : NO
Eyesafe Standard : N.A.
Polarization on Exit : LINEAR
Laser Fire Control : CONTROLLED
Laser Energy Monitor : OCCASSIONAL
Start Diode Type : Silicon
Manufactorer : thorlabs
Model : FDS025
Quantum Efficiency [%]:
Rise/Fall Time [ps]: 47/240
Date Installed : 2008-10-08
Date Removed :
Signal Processing : CFD
Manufacturer : Canberra
Model : TC454
Date Installed : 1992-08-16
Date Removed :
Additional Information :
Date Installed : 2018-03-21
Date Removed : 2021-08-27
Additional Information :
5.05 Laser Type : ND:YAG
Model : RL-532
Manufacturer : Photonics Industries, USA
Number of Amplifiers : 1
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]: N.A.
Secondary Wavelength [nm]: 532
Secondary Max. Energy [mJ]: 1.0
Xmit Energy Adjustable : NO
Additional Information :
Pulse Width (FWHM) [ps]: 50
Max. Repetition Rate [Hz]: 1000
Fullw. Beam Divergence ["]: 82.5
Theoretical Beam Div :
Measured Beam Div :
Method Used :
Additional Information :
Final Beam Diameter [m]: 0.06
Eyesafe : NO
Eyesafe Standard : N.A.
Polarization on Exit : LINEAR
Laser Fire Control : CONTROLLED
Laser Energy Monitor : OCCASSIONAL
Start Diode Type : Silicon
Manufactorer : thorlabs
Model : FDS025
Quantum Efficiency [%]:
Rise/Fall Time [ps]: 47/240
Date Installed : 2008-10-08
Date Removed :
Signal Processing : CFD
Manufacturer : Canberra
Model : TC454
Date Installed : 1992-08-16
Date Removed :
Additional Information :
Date Installed : 2021-08-27
Date Removed :
Additional Information :
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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]: 25
Field of View Diam ["]: 20 - 420
Date Installed : 1997-08-18
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : Time Walk Compensated
Manufacturer : Czech University of Technology
Model :
Date Installed : 1997-08-18
Date Removed :
Amplitude Measurement : NO
Return-Rate Controlled: NO
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : INTERVAL
Manufacturer : Hewlett-Packard
Model : 5370B
Resolution [ps]: 20
Precision [ps]: 35
Date Installed : 1992-01-01
Date Removed : 2006-10-23
Additional Information : (multiple lines)
6.01.02 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]: 25
Field of View Diam ["]: 40 - 60
Date Installed : 1997-08-18
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : Time Walk Compensated
Manufacturer : Czech University of Technology
Model :
Date Installed : 1997-08-18
Date Removed :
Amplitude Measurement : YES
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : Latvian University
Model : A032-ET
Resolution [ps]: 1
Precision [ps]: 5
Date Installed : 2006-10-24
Date Removed : 2012-04-25
Additional Information : (multiple lines)
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]: 25
Field of View Diam ["]: 40 - 60
Date Installed : 1997-08-18
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : Time Walk Compensated
Manufacturer : Czech University of Technology
Model :
Date Installed : 1997-08-18
Date Removed :
Amplitude Measurement : YES
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : Latvian University
Model : A033-ET
Resolution [ps]: 1
Precision [ps]: 5
Date Installed : 2012-04-25
Date Removed : 2015-05-20
Additional Information : (multiple lines)
6.01.04 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]: 25
Field of View Diam ["]: 40 - 60
Date Installed : 1997-08-18
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : Time Walk Compensated
Manufacturer : Czech University of Technology
Model :
Date Installed : 1997-08-18
Date Removed :
Amplitude Measurement : YES
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : Latvian University
Model : A032-ET
Resolution [ps]: 1
Precision [ps]: 5
Date Installed : 2015-05-20
Date Removed : 2017-05-08
Additional Information : (multiple lines)
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]: 25
Field of View Diam ["]: 40 - 60
Date Installed : 1997-08-18
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : Time Walk Compensated
Manufacturer : Czech University of Technology
Model :
Date Installed : 1997-08-18
Date Removed :
Amplitude Measurement : YES
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : Latvian University
Model : A033-ET
Resolution [ps]: 1
Precision [ps]: 5
Date Installed : 2017-05-08
Date Removed : 2017-09-01
Additional Information : (multiple lines)
6.01.06 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]: 25
Field of View Diam ["]: 40 - 60
Date Installed : 1997-08-18
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : Time Walk Compensated
Manufacturer : Czech University of Technology
Model :
Date Installed : 1997-08-18
Date Removed :
Amplitude Measurement : YES
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : Latvian University
Model :
Resolution [ps]: 1
Precision [ps]: 5
Date Installed : 2017-09-01
Date Removed : 2017-10-11
Additional Information :
6.01.07 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]: 25
Field of View Diam ["]: 40 - 60
Date Installed : 1997-08-18
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : Time Walk Compensated
Manufacturer : Czech University of Technology
Model :
Date Installed : 1997-08-18
Date Removed :
Amplitude Measurement : YES
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : Latvian University
Model :
Resolution [ps]: 1
Precision [ps]: 5
Date Installed : 2017-10-11
Date Removed : 2017-11-24
Additional Information :
6.01.08 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]: 25
Field of View Diam ["]: 40 - 60
Date Installed : 1997-08-18
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : Time Walk Compensated
Manufacturer : Czech University of Technology
Model :
Date Installed : 1997-08-18
Date Removed :
Amplitude Measurement : YES
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : Latvian University
Model :
Resolution [ps]: 1
Precision [ps]: 5
Date Installed : 2017-11-24
Date Removed : 2017-12-04
Additional Information :
6.01.09 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]: 25
Field of View Diam ["]: 40 - 60
Date Installed : 1997-08-18
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : Time Walk Compensated
Manufacturer : Czech University of Technology
Model :
Date Installed : 1997-08-18
Date Removed :
Amplitude Measurement : YES
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : Latvian University
Model :
Resolution [ps]: 1
Precision [ps]: 5
Date Installed : 2017-12-04
Date Removed : 2018-04-10
Additional Information :
6.01.10 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]: 25
Field of View Diam ["]: 40 - 60
Date Installed : 1997-08-18
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : Time Walk Compensated
Manufacturer : Czech University of Technology
Model :
Date Installed : 1997-08-18
Date Removed :
Amplitude Measurement : YES
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : Latvian University
Model : A033-ET
Resolution [ps]: 1
Precision [ps]: 5
Date Installed : 2018-04-10
Date Removed :
Additional Information : for repaired A033-ET testing
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 : N.A.
Return-Rate Controlled: N.A.
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) : YES
Low Altitude (400-2000) : YES
LAGEOS/LARES : YES
GLONASS : YES
Etalon : YES
GNSS : YES
Geosynchronous : YES
Moon : NO
Ave. Pass Switch Time [s]: 25
Average values for LAGEOS
Single Shot RMS [mm]: 12
# of Obs per NP : 100 - 9999
Use of Semi-trains : NO
# of Semi-train Tracks : N.A.
Range Gate Width [ns]: 200 - 6000
Beam Pointing Accuracy ["]: 5
Angle Encoder Resolution["]: 0.077
Min. Tracking Elev. [deg]: 5
Laser Polarization @emitter: LINEAR
Operation
Months per Year : 12
Days per Week : 7
Hours per Day : 24
Staff per Shift : 1
System Shared With : NOTHING
Time Allocated to SLR [%]: 100
Remotely Controllable : NO
Tracking Restrictions
Go/No-go flag : YES
Satellite Verification :
Date Verified :
Maximum elevation : YES
Satellite Verification :
Date Verified :
Pass segments : YES
Satellite Verification :
Date Verified :
Schedule segments : NO
Satellite Verification :
Date Verified :
Maximum laser power limit: YES
Satellite Verification :
Date Verified :
Date First Applicable : 1988-01-01 08:00 UT
Date Last Applicable :
Additional Information :
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8. Calibration
8.01 Calibration Type : PRE+POST
Target Location : EXTERNAL
Target Type : CORNER CUBE
Target Structure : METAL POLE
Number of Targets : 2
Target Distance(s) [m]: 1268.6215
Date Measured : 1997-06-28
Accuracy [mm]: 1
Verification :
Return-Rate Controlled : YES
Eye-Safe Method :
Additional Information :
Mode of Operation : FEW PHOTON
Calibration performed : 150
Single Shot RMS [mm]: 10
Edit Criterion 1st Chain : ITERATIVE 2.5 SIGMA
Edit Criterion 2nd Chain : N.A.
Application of Cal Data : AVERAGE
Date Installed : 1992-01-01
Date Removed :
Additional Information :
8.02 Calibration Type : PRE+POST
Target Location : EXTERNAL WITHIN DOME
Target Type : 1 Glas Surface, plus 1 diffuse reflector
Target Structure : METAL POLE
Number of Targets : 2
Target Distance(s) [m]: 3.699
Date Measured : 2013-04-22
Accuracy [mm]: <1
Verification :
Return-Rate Controlled : YES
Eye-Safe Method :
Additional Information :
Mode of Operation : SINGLE/FEW PHOTON
Calibration performed : 60
Single Shot RMS [mm]: 10
Edit Criterion 1st Chain : ITERATIVE 2.5 SIGMA
Edit Criterion 2nd Chain : N.A.
Application of Cal Data : AVERAGE
Date Installed : 2013-04-25
Date Removed :
Additional Information :
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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]: 110
Date Installed : 1997-08-18
Date Removed : 2013-08-13
Additional Information :
9.01.02 Frequency Standard Type : Oven Controlled Crystal Oscillator
Model : Meridian Precision GPS TimeBase
Manufacturer : EndRun
Short Term Stab. [e-12]: 0.1
Long Term Stab. [e-12]: 0.1
Time Reference : GPS
Synchronization : GPS
Epoch Accuracy [ns]: 50
Date Installed : 2013-08-13
Date Removed :
Additional Information :
9.02.01 GNSS Timing Rcvr Model : 58503A
Manufacturer : HP
Date Installed : 1997-08-18
Date Removed : 2013-08-13
Additional Information :
9.02.02 GNSS Timing Rcvr Model : Meridian Precision GPS TimeBase
Manufacturer : EndRun
Date Installed : 2013-08-13
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 : YES
Data Screening : Polyfit fit + orbit solve
Return-Rate Rejection :
Edit Criterion 1st Chain : 2.5 SIGMA
Edit Criterion 2nd Chain : N.A.
Upload interval : DAILY
Date First Applicable : 1992-01-01 HH:MM UT
Date Last Applicable :
Additional Information :
10.02 On-site NP Generation : YES
Data Screening : Polyfit fit + orbit solve
Return-Rate Rejection :
Edit Criterion 1st Chain : 2.5 SIGMA
Edit Criterion 2nd Chain : N.A.
Upload interval : DAILY
Date First Applicable : 2023-12-19 00:00 UT
Date Last Applicable :
Additional Information : Leading Edge 20 mm rejection criteria;
: by manual clipping;
: for LAGEOS-1 and LAGEOS-2;
: LAGEOS-1/2: LE, 5 mm RMS
:
10.03 On-site NP Generation : YES
Data Screening : Polyfit fit + orbit solve
Return-Rate Rejection :
Edit Criterion 1st Chain : 2.5 SIGMA
Edit Criterion 2nd Chain : N.A.
Upload interval : DAILY
Date First Applicable : 2024-01-28 00:00 UT
Date Last Applicable :
Additional Information : Leading Edge 20 mm rejection criteria;
: by manual clipping;
: for LARES, LARES-2, Stella, Starlette;
: LE, 5 mm RMS
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11. Aircraft Detection
11.01 Detection Type : NONE
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 : MET3
Manufacturer : Paroscientific
Recording Interval : PER PASS
Accuracy [mbar]: 0.1
Height Diff to SRP [m]: +0.2
Distance from SRP [m]:
Date Installed : 1997-08-18 HH:MM UT
Calibration Interval : YEARLY
Date Removed :
Additional Information :
12.02.01 Temp Sensor Model : MET3
Manufacturer : Paroscientific
Recording Interval : PER PASS
Accuracy [deg C]: 0.5
Date Installed : 1997-08-18 HH:MM UT
Calibration Interval : YEARLY
Date Removed :
Additional Information :
12.03.01 Humidity Sensor Model : MET3
Manufacturer : Paroscientific
Recording Interval : PER PASS
Accuracy [% rel h]: 2
Date Installed : 1997-08-18 HH:MM UT
Calibration Interval : YEARLY
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 : ASHTECH UZ-12
Date Installed : 2007-11-15
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 : 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 : CHAN
Instrumentation Type : GPS
Instrumentation Status : PERMANENT
DOMES Number : 21611M002
CDP Number :
Differential Components (ITRS)
dx [m]: -40.2996 +- 0.00031
dy [m]: -46.0158 +- 0.00030
dz [m]: 13.3399 +- 0.00031
Date Measured : 2011-10-09
Determined by : TRIANGULATION
Date Installed : 2007-11-15
Date Removed :
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 : Changchun Observatory,NAOC,CAS
Mailing Address : Jingyue Lake
: Changchun
: Jilin, China
: 130117
Website :
Primary Contact
Contact Name : Xingwei Han
Telephone (primary) : 86-431-81102117
Telephone (secondary) :
Fax : 86-431-81102117
E-mail : Hanxw@cho.ac.cn
Secondary Contact
Contact Name : Xue Dong
Telephone (primary) : 86-431-81102117
Telephone (secondary) :
Fax :
E-mail : dongx@cho.ac.cn
Tertiary Contact
Contact Name : Zhipeng Liang
Telephone (primary) : 86-431-81102117
Telephone (secondary) :
Fax :
E-mail : liangzp@cho.ac.cn
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 : www.cho.cas.cn
Hardcopy on File
Site Map : NO
Site Diagram : NO
Horizon Mask : NO
Monument Description : NO
Site Pictures : NO
Additional Information :
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