Site Log - Tsukuba, Japan (7306)
ILRS Site and System Information Form
International Laser Ranging Service
0. Form
Prepared by (Full Name) : Jens Steinborn
Preparer E-mail : jens.steinborn@digos.eu
Date Prepared : 2023-03-06
Report Type : UPDATE
Site Log Format Version : 2.0
Site Log Revision : 2
1. Identification of the Ranging System Reference Point (SRP)
Site Name : Tsukuba Space Center
IERS DOMES Number : 21797S001
CDP Pad ID : 7306
Subnetwork : WPLTN
Description : AZ EL INTERSECT
Monument Description : N.A.
Monument Inscription : N.A.
Mark Description : N.A.
Date Installed : 2022-06-23
Date Removed :
Geologic Characteristic :
Additional Information :
2. Site Location Information
City or Town : Tsukuba
State or Province : Ibaraki
Country : Japan
Tectonic Plate : NORTH AMERICAN
Local Time (UTC +/- hours) : 9
Approximate Position
X coordinate [m]: -3961641.028
Y coordinate [m]: 3308774.456
Z coordinate [m]: 3734291.464
Latitude [deg]: 36.0675 N
Longitude [deg]: 140.1313 E
Elevation [m]: 68.21
Survey Method : Initial SLR solution
Date Measured : 2022-12-01
Additional Information : Ellips. height
3. General System Information
3.01 System Name : Tsukuba
4-Character Code : TKBL
CDP System Number : 93
CDP Occupation Number : 01
Eccentricity to SRP (if Not Identical With SRP)
North [m]:
East [m]:
Up [m]:
Date Measured :
Date Installed : 2022-06-23
Date Removed :
Additional Information :
4. Telescope Information
4.01 Receiving Telescope Type : RITCHE-CHRETIEN
Aperture [m]: 0.8
Mount : AZ-EL
Date Installed : 2022-06-23
Date Removed :
Xmitting Telescope Type : GALILEI
Aperture [m]: 0.075
Date Installed : 2022-06-23
Date Removed :
Tracking Camera Type : CMOS
Model : ASI 120MM
Manufacturer : ZWO
Field of View [deg]: 0.07
Minimum Magnitude [mag]:
Date Installed : 2022-06-23
Date Removed :
Transmit/Receive Path : SEPARATE
Transmit/Receive Switch : N.A.
Max Slew Rate Az [deg/s]: 10
Max Slew Rate El [deg/s]: 10
Max Used Tracking Rate Az : 5
Max Used Tracking Rate El : 5
Telescope Shelter : DOME
Daylight Filter Type : SPECTRAL FILTER
Dayl. Filt. Bandwidth [nm]: 0.3
Adjustable Attenuation : TRANSMIT
Adjustable Field of View : YES
Transmit Efficiency : 0.9
Receive Efficiency : 0.5
Date Installed : 2022-06-23
Date Removed :
Additional Information :
5. Laser System Information
5.01 Laser Type : ND:YAG
Model : Compiler Compact 532/1064
Manufacturer : Passat Ltd
Number of Amplifiers : 1
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]: 0.4
Secondary Wavelength [nm]: 532
Secondary Max. Energy [mJ]: 0.3
Xmit Energy Adjustable : YES
Additional Information : Output energy can be divided between
: 532nm and 1064nm output.
Pulse Width (FWHM) [ps]: 8
Max. Repetition Rate [Hz]: 1000
Fullw. Beam Divergence ["]: 5.8 - 8.0
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 : SYNCRONISED TO UTC
Laser Energy Monitor : ON-CALIBRATION
Start Diode Type : PIN DIODE
Manufactorer : Osram
Model : SFH 229
Quantum Efficiency [%]:
Rise/Fall Time [ps]: 10000
Date Installed : 2022-06-23
Date Removed :
Signal Processing : ECL2NIM Discriminator
Manufacturer : DiGOS Potsdam GmbH
Model : 2ch ECL2NIM
Date Installed : 2022-06-23
Date Removed :
Additional Information : Leading-edge discriminator
Date Installed : 2022-06-23
Date Removed :
Additional Information :
5.02 Laser Type : ND:YAG
Model : Compiler Compact 532/1064
Manufacturer : Passat Ltd
Number of Amplifiers : 1
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]: 0.4
Secondary Wavelength [nm]:
Secondary Max. Energy [mJ]:
Xmit Energy Adjustable : YES
Additional Information : Output energy can be divided between
: 532nm and 1064nm output.
Pulse Width (FWHM) [ps]: 7
Max. Repetition Rate [Hz]: 1000
Fullw. Beam Divergence ["]: 12 - 14
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 : SYNCRONISED TO UTC
Laser Energy Monitor : ON-CALIBRATION
Start Diode Type : PIN DIODE
Manufactorer : Osram
Model : SFH 229
Quantum Efficiency [%]:
Rise/Fall Time [ps]: 10000
Date Installed : 2022-06-23
Date Removed :
Signal Processing : ECL2NIM Discriminator
Manufacturer : DiGOS Potsdam GmbH
Model : 2ch ECL2NIM
Date Installed : 2022-06-23
Date Removed :
Additional Information : Leading-edge discriminator
Date Installed : 2022-06-23
Date Removed :
Additional Information : S/N 200624
6. Receiver System
6.01.01 Primary Chain
Wavelength [nm]: 532
Detector Type : CSPAD
Manufacturer : PESO Consulting
Model : K14
Quantum Efficiency [%]: 42
Nominal Gain : N.A.
Rise Time [ps]: 1500
Jitter (Single PE)[ps]: 45
Field of View Diam ["]: 20 - 250
Date Installed : 2022-06-23
Date Removed :
Amplifier Type : N.A.
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : ECL2NIM Discriminator
Manufacturer : DiGOS Potsdam GmbH
Model : 2ch ECL2NIM
Date Installed : 2022-06-23
Date Removed :
Amplitude Measurement : NO
Return-Rate Controlled: YES
Mode of Operation : SINGLE
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : University of Riga, Inst. for Electronics
Model : A033-ET
Resolution [ps]: 1
Precision [ps]: 4
Date Installed : 2022-06-23
Date Removed :
Additional Information : ET S/N #033065
6.02.01 Secondary Chain
Wavelength [nm]: 1064
Detector Type : SPAD
Manufacturer : Princeton Lightwave
Model : PGA-200
Quantum Efficiency [%]: 30
Nominal Gain : N.A.
Rise Time [ps]: 1500
Jitter (Single PE)[ps]: 45
Field of View Diam ["]: 20 - 250
Date Installed : 2022-06-23
Date Removed :
Amplifier Type : N.A.
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : N.A.
Manufacturer :
Model :
Date Installed :
Date Removed :
Amplitude Measurement : NO
Return-Rate Controlled: YES
Mode of Operation : SINGLE
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : University of Riga, Inst. for Electronics
Model : A033-ET
Resolution [ps]: 1
Precision [ps]: 4
Date Installed : 2022-06-23
Date Removed :
Additional Information : ET S/N #033065
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 :
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]: 3
Average values for LAGEOS
Single Shot RMS [mm]: 10
# of Obs per NP : 1000
Use of Semi-trains : N.A.
# of Semi-train Tracks :
Range Gate Width [ns]: 0 - 1000
Beam Pointing Accuracy ["]: 5
Angle Encoder Resolution["]: 0.01
Min. Tracking Elev. [deg]: 20
Laser Polarization @emitter: LINEAR
Operation
Months per Year :
Days per Week :
Hours per Day :
Staff per Shift :
System Shared With : NOTHING
Time Allocated to SLR [%]: 100
Remotely Controllable : YES
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 : YES
Satellite Verification :
Date Verified :
Maximum laser power limit: YES
Satellite Verification :
Date Verified :
Date First Applicable : 2022-06-23 00:00 UT
Date Last Applicable :
Additional Information :
8. Calibration
8.01 Calibration Type : HOURLY
Target Location : INTERNAL
Target Type : FIBER
Target Structure : N.A.
Number of Targets : 2
Target Distance(s) [m]: 2.446, 1.697
Date Measured : 2022-10-20
Accuracy [mm]: 1
Verification :
Return-Rate Controlled : YES
Eye-Safe Method : OTHER
Additional Information :
Mode of Operation : SINGLE PHOTON
Calibration performed : HOUR
Single Shot RMS [mm]: 5 - 7
Edit Criterion 1st Chain : ITERATIVE 2.2 SIGMA
Edit Criterion 2nd Chain : ITERATIVE 2.2 SIGMA
Application of Cal Data : AVERAGE
Date Installed : 2022-06-23
Date Removed :
Additional Information :
8.02 Calibration Type : N.A.
Target Location : EXTERNAL WITHIN DOME
Target Type : FOLDED OPTICS
Target Structure : METAL POLE
Number of Targets : 2
Target Distance(s) [m]: 1.451, 1.312
Date Measured : 2022-10-20
Accuracy [mm]: 1
Verification :
Return-Rate Controlled : YES
Eye-Safe Method : OTHER
Additional Information :
Mode of Operation : SINGLE PHOTON
Calibration performed : VERIFICATION
Single Shot RMS [mm]: 4 - 7
Edit Criterion 1st Chain : ITERATIVE 2.2 SIGMA
Edit Criterion 2nd Chain : ITERATIVE 2.2 SIGMA
Application of Cal Data : AVERAGE
Date Installed : 2022-06-23
Date Removed :
Additional Information : In dome calibration target for verification
9. Time and Frequency Standards
9.01.01 Frequency Standard Type : OCXO DHQ
Model : Lantime M1000 / GNS181
Manufacturer : Meinberg
Short Term Stab. [e-12]: 2
Long Term Stab. [e-12]: 1
Time Reference : GPS
Synchronization : GPS
Epoch Accuracy [ns]: 50
Date Installed : 2022-06-23
Date Removed :
Additional Information :
9.02.01 GNSS Timing Rcvr Model : Lantime M1000 / GNS181
Manufacturer : Meinberg
Date Installed : 2022-06-23
Date Removed :
Additional Information :
9.03.01 One-way System Calibration
Date performed :
Direction Calibrated :
Additional Information :
10. Preprocessing Information
10.01 On-site NP Generation : YES
Data Screening : CPF+POLYNOMIAL
Return-Rate Rejection : 15
Edit Criterion 1st Chain : ITERATIVE 2.2 SIGMA
Edit Criterion 2nd Chain : ITERATIVE 2.2 SIGMA
Upload interval : AFTER EACH SHIFT
Date First Applicable : 2022-06-23 00:00 UT
Date Last Applicable :
Additional Information : Leading Edge 20mm rejection for Lageos1/2;
: Leading Edge 300mm rejection for Ajisai;
11. Aircraft Detection
11.01 Detection Type : ADS-B
Manufacturer/Provider : Jetvision Radarcape
Automatic Laser Shutoff : YES
Alarms Recorded : YES
Hazard Distance [km]: 30
Date Installed : 2022-06-23
Date Removed :
Additional Information :
11.02 Detection Type : RADAR
Manufacturer/Provider : KBR
Automatic Laser Shutoff : YES
Alarms Recorded : YES
Hazard Distance [km]: 24.4
Date Installed : 2022-07-30
Date Removed :
Additional Information :
12. Meteorological Instrumentation
12.01.01 Pressure Sensor Model : PTU300
Manufacturer : Vaisala
Recording Interval : 00:01:00
Accuracy [mbar]: +-0.07
Height Diff to SRP [m]: 0.16
Distance from SRP [m]: 5
Date Installed : 2022-06-23 00:00 UT
Calibration Interval : YEARLY
Date Removed :
Additional Information :
12.02.01 Temp Sensor Model : PTU300
Manufacturer : Vaisala
Recording Interval : 00:01:00
Accuracy [deg C]: +-0.1
Date Installed : 2022-06-23 00:00 UT
Calibration Interval : YEARLY
Date Removed :
Additional Information :
12.03.01 Humidity Sensor Model : PTU300
Manufacturer : Vaisala
Recording Interval : 00:01:0
Accuracy [% rel h]: +-1.0
Date Installed : 2022-06-23 00:00 UT
Calibration Interval : YEARLY
Date Removed :
Additional Information :
13. Local Ties, Eccentricities, and Collocation Information
13.01 Collocated Permanent Geodetic Systems
13.01.01.01 GNSS :
Date Installed :
Date Removed :
Additional Info :
13.01.02.01 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 :
14. Local Events Possibly Affecting Computed Position
14.01 Date :
Event :
Additional Information :
15. On-Site, Point of Contact Agency Information
Agency : Japan Aerospace Exploration Agency
Mailing Address : 305-8505 Sengen2-1-1, Tsukuba-city, Ibaraki
Website :
Primary Contact
Contact Name : Shinchi Nakamura
Telephone (primary) : +81 70 3117 7264
Telephone (secondary) :
Fax :
E-mail : nakamura.shinichi@jaxa.jp
Secondary Contact
Contact Name : Takehiro Matsumoto
Telephone (primary) : +81 70 1170 3612
Telephone (secondary) :
Fax :
E-mail : matsumoto.takehiro@jaxa.jp
Tertiary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Additional Information :
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 :
17. More Information
URL for More Information :
Hardcopy on File
Site Map :
Site Diagram :
Horizon Mask :
Monument Description :
Site Pictures :
Additional Information :