Quick Links
- Network Map
- List of Stations
- Monthly Report Card
- Quarterly Report Card
- Network Status Page
- Potsdam CPF time bias service
- Procedure for estimating laser beam divergence
- Recent Station Upgrades
- Network station application form
- Revised ILRS station screening process at ILRS Operations Centers (NASA and EDC)
Simosato: 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) : Yuto Nakamura
Preparer E-mail : eisei@jodc.go.jp
Date Prepared : 2023-06-02
Report Type : UPDATE
Site Log Format Version : 2.0
Site Log Revision :
Back to top
1. Identification of the Ranging System Reference Point (SRP)
Site Name : Simosato
IERS DOMES Number : 21726S001
CDP Pad ID : 7838
Subnetwork : WPLTN
Description : AZ EL INTERSECT
Monument Description : N.A.
Monument Inscription : N.A.
Mark Description : N.A.
Date Installed : 1982-01-31
Date Removed :
Geologic Characteristic : BEDROCK
Additional Information :
Back to top
2. Site Location Information
City or Town : Nachi Katsuura-cho
State or Province : Wakayama
Country : Japan
Tectonic Plate : Eurasian
Local Time (UTC +/- hours) : 9
Approximate Position
X coordinate [m]: -3822388.355
Y coordinate [m]: 3699363.566
Z coordinate [m]: 3507573.117
Latitude [deg]: 33.5777 N
Longitude [deg]: 135.9370 E
Elevation [m]: 62.44
Survey Method :
Date Measured :
Additional Information : The site is located on heights near the sea.
: The geodetic coordinate datum is WGS-84
: (epoch 1997.0) and the elevation datum is
: Tokyo wan mean sea level (T.P.).
: (Height above ellipsoid: 101.618m)
Back to top
3. General System Information
3.01 System Name : Simosato
4-Character Code : SISL
CDP System Number : 36
CDP Occupation Number : 02
Eccentricity to SRP (if Not Identical With SRP)
North [m]:
East [m]:
Up [m]:
Date Measured :
Date Installed : 1990-07-01
Date Removed : 2009-08-18
Additional Information :
3.02 System Name : Simosato
4-Character Code : SISL
CDP System Number : 36
CDP Occupation Number : 03
Eccentricity to SRP (if Not Identical With SRP)
North [m]:
East [m]:
Up [m]:
Date Measured :
Date Installed : 2009-11-26
Date Removed :
Additional Information :
Back to top
4. Telescope Information
4.01 Receiving Telescope Type : CASSEGRAIN
Aperture [m]: 0.60
Mount : AZ-EL
Date Installed :
Date Removed :
Xmitting Telescope Type : GALILEI
Aperture [m]: 0.17
Date Installed :
Date Removed :
Tracking Camera Type : CCD
Model : CP-1020
Manufacturer :
Field of View [deg]: 0.54
Minimum Magnitude [mag]:
Date Installed :
Date Removed :
Transmit/Receive Path : SEPARATE
Transmit/Receive Switch : NONE
Max Slew Rate Az [deg/s]: 5
Max Slew Rate El [deg/s]: 15
Max Used Tracking Rate Az : N.A.
Max Used Tracking Rate El : N.A.
Telescope Shelter : SLIDE ROOF
Daylight Filter Type : BANDPASS INTERFERENCE FILTER
Dayl. Filt. Bandwidth [nm]: 1
Adjustable Attenuation : RECEIVE
Adjustable Field of View :
Transmit Efficiency : 0.94
Receive Efficiency : 0.28
Date Installed : 1982-03-01
Date Removed : 2009-08-18
Additional Information : Max Used Track Rate Az: "-315 to +315 deg"
: Max Used Track Rate El: "+15 to 90 deg"
4.02 Receiving Telescope Type : NASMYTH
Aperture [m]: 0.75
Mount : AZ-EL
Date Installed :
Date Removed :
Xmitting Telescope Type : NASMYTH
Aperture [m]: 0.75
Date Installed :
Date Removed :
Tracking Camera Type : CCD
Model : CP-1020
Manufacturer : Watec CO., LT
Field of View [deg]: 0.54
Minimum Magnitude [mag]:
Date Installed :
Date Removed :
Transmit/Receive Path : COMMON COUDE
Transmit/Receive Switch : POLARIZER
Max Slew Rate Az [deg/s]: 9
Max Slew Rate El [deg/s]: 1
Max Used Tracking Rate Az : 9
Max Used Tracking Rate El : 1
Telescope Shelter : SLIDE ROOF
Daylight Filter Type : BANDPASS INTERFERENCE FILTER
Dayl. Filt. Bandwidth [nm]: 1
Adjustable Attenuation : RECEIVE
Adjustable Field of View :
Transmit Efficiency : 0.59
Receive Efficiency : 0.44
Date Installed : 2009-11-26
Date Removed :
Additional Information : Max Used Track Rate Az: "-315 to +315 deg"
: Max Used Track Rate El: "+15 to 90 deg"
Back to top
5. Laser System Information
5.01 Laser Type : ND:YAG
Model :
Manufacturer :
Number of Amplifiers : 3
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]:
Secondary Wavelength [nm]: 532
Secondary Max. Energy [mJ]: 120
Xmit Energy Adjustable : NO
Additional Information :
Pulse Width (FWHM) [ps]: 100
Max. Repetition Rate [Hz]: 10
Fullw. Beam Divergence ["]: 20 - 400
Theoretical Beam Div :
Measured Beam Div :
Method Used :
Additional Information :
Final Beam Diameter [m]: 0.15
Eyesafe : NO
Eyesafe Standard : N.A.
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 : 1990-07-01
Date Removed : 2008-04-01
Additional Information :
5.02 Laser Type : ND:YAG
Model :
Manufacturer :
Number of Amplifiers : 2
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]:
Secondary Wavelength [nm]: 532
Secondary Max. Energy [mJ]: 60
Xmit Energy Adjustable : NO
Additional Information :
Pulse Width (FWHM) [ps]: 20
Max. Repetition Rate [Hz]: 5
Fullw. Beam Divergence ["]: 20 - 400
Theoretical Beam Div :
Measured Beam Div :
Method Used :
Additional Information :
Final Beam Diameter [m]: 0.15
Eyesafe : NO
Eyesafe Standard : N.A.
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 : 2008-04-01
Date Removed : 2009-08-18
Additional Information :
5.03 Laser Type : ND:YAG
Model :
Manufacturer :
Number of Amplifiers : 2
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]:
Secondary Wavelength [nm]: 532
Secondary Max. Energy [mJ]: 60
Xmit Energy Adjustable : NO
Additional Information :
Pulse Width (FWHM) [ps]: 20
Max. Repetition Rate [Hz]: 5
Fullw. Beam Divergence ["]: 10 - 103
Theoretical Beam Div :
Measured Beam Div :
Method Used :
Additional Information :
Final Beam Diameter [m]: 0.75
Eyesafe : NO
Eyesafe Standard : N.A.
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 : 2009-11-26
Date Removed : 2018-10-22
Additional Information :
5.04 Laser Type : ND:YAG
Model :
Manufacturer :
Number of Amplifiers : 2
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]:
Secondary Wavelength [nm]: 532
Secondary Max. Energy [mJ]: 3
Xmit Energy Adjustable : NO
Additional Information :
Pulse Width (FWHM) [ps]: 30
Max. Repetition Rate [Hz]: 1,000
Fullw. Beam Divergence ["]: 6 - 20
Theoretical Beam Div :
Measured Beam Div :
Method Used :
Additional Information :
Final Beam Diameter [m]: 0.75
Eyesafe : NO
Eyesafe Standard : N.A.
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 : 2018-10-23
Date Removed :
Additional Information : Laser Type: "Laser Diode"
Back to top
6. Receiver System
6.01.01 Primary Chain
Wavelength [nm]: 532
Detector Type : MCP
Manufacturer : Hamamatsu
Model : R3809U-MOD
Quantum Efficiency [%]: 8
Nominal Gain : 1300000
Rise Time [ps]: 140
Jitter (Single PE)[ps]: 25
Field of View Diam ["]: 100 - 400
Date Installed : 1999-10-19
Date Removed : 2009-08-18
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : COMPARATOR
Manufacturer :
Model : MC10E1651
Date Installed : 1999-10-23
Date Removed : 2009-08-18
Amplitude Measurement : NO
Return-Rate Controlled: YES
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 : 1998-MM-DD
Date Removed : 2004-06-30
Additional Information :
6.01.02 Primary Chain
Wavelength [nm]: 532
Detector Type : MCP
Manufacturer : Hamamatsu
Model : R3809U-MOD
Quantum Efficiency [%]: 8
Nominal Gain : 1300000
Rise Time [ps]: 140
Jitter (Single PE)[ps]: 25
Field of View Diam ["]: 100 - 400
Date Installed : 1999-10-19
Date Removed : 2009-08-18
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : COMPARATOR
Manufacturer :
Model : MC10E1651
Date Installed : 1999-10-23
Date Removed : 2004-12-31
Amplitude Measurement : NO
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : INTERVAL
Manufacturer : Stanford Research Systems
Model : SR620
Resolution [ps]: 4
Precision [ps]: 30
Date Installed : 2004-07-01
Date Removed : 2010-01-15
Additional Information :
6.01.03 Primary Chain
Wavelength [nm]: 532
Detector Type : MCP
Manufacturer : Hamamatsu
Model : R3809U-MOD
Quantum Efficiency [%]: 8
Nominal Gain : 1300000
Rise Time [ps]: 140
Jitter (Single PE)[ps]: 25
Field of View Diam ["]: 100 - 400
Date Installed : 1999-10-19
Date Removed : 2009-08-18
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : COMPARATOR
Manufacturer :
Model : ADCMP565BP
Date Installed : 2005-01-01
Date Removed : 2009-08-18
Amplitude Measurement : NO
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : INTERVAL
Manufacturer : Stanford Research Systems
Model : SR620
Resolution [ps]: 4
Precision [ps]: 30
Date Installed : 2004-07-01
Date Removed : 2010-01-15
Additional Information : photo-detector was replaced C4258(Hamamatsu)
: with 1004-112B(New Focus), on 2005-05-09
6.01.04 Primary Chain
Wavelength [nm]: 532
Detector Type : MCP
Manufacturer : Hamamatsu
Model : R3809U-50-G3
Quantum Efficiency [%]: 15
Nominal Gain : 1e6
Rise Time [ps]: 170
Jitter (Single PE)[ps]: 25
Field of View Diam ["]: 100 - 200
Date Installed : 2009-11-26
Date Removed : 2018-03-10
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : COMPARATOR
Manufacturer : ANALOG DEVICES
Model : ADCMP581BCZ-WP
Date Installed : 2009-11-26
Date Removed :
Amplitude Measurement : NO
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : INTERVAL
Manufacturer : Stanford Research Systems
Model : SR620
Resolution [ps]: 4
Precision [ps]: 30
Date Installed : 2004-07-01
Date Removed : 2010-01-15
Additional Information :
6.01.05 Primary Chain
Wavelength [nm]: 532
Detector Type : MCP
Manufacturer : Hamamatsu
Model : R3809U-50-G3
Quantum Efficiency [%]: 15
Nominal Gain : 1e6
Rise Time [ps]: 170
Jitter (Single PE)[ps]: 25
Field of View Diam ["]: 100 - 200
Date Installed : 2009-11-26
Date Removed : 2018-03-10
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : COMPARATOR
Manufacturer : ANALOG DEVICES
Model : ADCMP581BCZ-WP
Date Installed : 2009-11-26
Date Removed :
Amplitude Measurement : NO
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : Institute of Electronics and Computer Science
Model : A032-ET
Resolution [ps]: 1
Precision [ps]: 8
Date Installed : 2010-01-15
Date Removed : 2016-12-08
Additional Information : Event Timer was installed.
6.01.06 Primary Chain
Wavelength [nm]: 532
Detector Type : MCP
Manufacturer : Hamamatsu
Model : R3809U-50-G3
Quantum Efficiency [%]: 15
Nominal Gain : 1e6
Rise Time [ps]: 170
Jitter (Single PE)[ps]: 25
Field of View Diam ["]: 100 - 200
Date Installed : 2009-11-26
Date Removed : 2018-03-10
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : COMPARATOR
Manufacturer : ANALOG DEVICES
Model : ADCMP581BCZ-WP
Date Installed : 2009-11-26
Date Removed :
Amplitude Measurement : NO
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : Institute of Electronics and Computer Science
Model : A033-ET
Resolution [ps]: 5
Precision [ps]: 5
Date Installed : 2016-12-09
Date Removed :
Additional Information : Event Timer was replaced.
6.01.07 Primary Chain
Wavelength [nm]: 532
Detector Type : MCP
Manufacturer : Hamamatsu
Model : C13068-C2MOD
Quantum Efficiency [%]: 8
Nominal Gain : 1e06
Rise Time [ps]: 170
Jitter (Single PE)[ps]: 25
Field of View Diam ["]: 100 - 200
Date Installed : 2018-03-11
Date Removed : 2021-12-09
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : COMPARATOR
Manufacturer : ANALOG DEVICES
Model : ADCMP581BCZ-WP
Date Installed : 2009-11-26
Date Removed :
Amplitude Measurement : NO
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : Institute of Electronics and Computer Science
Model : A033-ET
Resolution [ps]: 5
Precision [ps]: 5
Date Installed : 2016-12-09
Date Removed :
Additional Information : MCP-PMT was replaced on 2018/03/11.
6.01.08 Primary Chain
Wavelength [nm]: 532
Detector Type : MCP
Manufacturer : Hamamatsu
Model : R3809U-50-G3
Quantum Efficiency [%]: 15
Nominal Gain : 1e6
Rise Time [ps]: 170
Jitter (Single PE)[ps]: 25
Field of View Diam ["]: 100 - 200
Date Installed : 2021-12-09
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : COMPARATOR
Manufacturer : ANALOG DEVICES
Model : ADCMP581BCZ-WP
Date Installed : 2009-11-26
Date Removed :
Amplitude Measurement : NO
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : EVENT
Manufacturer : Institute of Electronics and Computer Science
Model : A033-ET
Resolution [ps]: 5
Precision [ps]: 5
Date Installed : 2016-12-09
Date Removed :
Additional Information : MCP-PMT was replaced on 2021/12/09.
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 :
Return-Rate Controlled:
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 :
Back to top
7. Tracking Capabilities
7.01 Satellites
Very Low Alt (<400 km) : NO
Low Altitude (400-2000) : YES
LAGEOS/LARES : YES
GLONASS : NIGHT
Etalon : NIGHT
GNSS : NIGHT
Geosynchronous :
Moon : NO
Ave. Pass Switch Time [s]: 30
Average values for LAGEOS
Single Shot RMS [mm]: 40
# of Obs per NP : 40
Use of Semi-trains : NO
# of Semi-train Tracks : N.A.
Range Gate Width [ns]: 200 - 33000000
Beam Pointing Accuracy ["]: 3
Angle Encoder Resolution["]: 1.24
Min. Tracking Elev. [deg]: 13
Laser Polarization @emitter:
Operation
Months per Year : 12
Days per Week : 7
Hours per Day : 20
Staff per Shift : 2
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 : 1982-03-31 HH:MM UT
Date Last Applicable : 2008-03-31 HH:MM UT
Additional Information : The maximum tracking range of
: our system is 26,000km.
7.02 Satellites
Very Low Alt (<400 km) : NO
Low Altitude (400-2000) : YES
LAGEOS/LARES : YES
GLONASS : NIGHT
Etalon : NIGHT
GNSS : NIGHT
Geosynchronous :
Moon : NO
Ave. Pass Switch Time [s]: 30
Average values for LAGEOS
Single Shot RMS [mm]: 15
# of Obs per NP : 15
Use of Semi-trains : NO
# of Semi-train Tracks : N.A.
Range Gate Width [ns]: 100 - 33000000
Beam Pointing Accuracy ["]: 3
Angle Encoder Resolution["]: 1.24
Min. Tracking Elev. [deg]: 13
Laser Polarization @emitter:
Operation
Months per Year : 12
Days per Week : 5
Hours per Day : 15
Staff per Shift : 2
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 : 2008-04-01 HH:MM UT
Date Last Applicable : 2009-08-18 HH:MM UT
Additional Information : The maximum tracking range of
: our system is 26,000km.
7.03 Satellites
Very Low Alt (<400 km) : NO
Low Altitude (400-2000) : YES
LAGEOS/LARES : YES
GLONASS : NIGHT
Etalon : NIGHT
GNSS : NIGHT
Geosynchronous :
Moon : NO
Ave. Pass Switch Time [s]: 30
Average values for LAGEOS
Single Shot RMS [mm]: 15
# of Obs per NP : 15
Use of Semi-trains : NO
# of Semi-train Tracks : N.A.
Range Gate Width [ns]: 100 - 50000
Beam Pointing Accuracy ["]: 3
Angle Encoder Resolution["]: 1.24
Min. Tracking Elev. [deg]: 13
Laser Polarization @emitter:
Operation
Months per Year : 12
Days per Week : 5
Hours per Day : 15
Staff per Shift : 2
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 : 2009-11-26 HH:MM UT
Date Last Applicable : 2010-08-31 HH:MM UT
Additional Information : The maximum tracking range of our system
: is 26,000km.
7.04 Satellites
Very Low Alt (<400 km) : NO
Low Altitude (400-2000) : YES
LAGEOS/LARES : YES
GLONASS : YES
Etalon : NIGHT
GNSS : NIGHT
Geosynchronous :
Moon : NO
Ave. Pass Switch Time [s]: 30
Average values for LAGEOS
Single Shot RMS [mm]: 15
# of Obs per NP : 15
Use of Semi-trains : NO
# of Semi-train Tracks : N.A.
Range Gate Width [ns]: 100 - 50000
Beam Pointing Accuracy ["]: 3
Angle Encoder Resolution["]: 1.24
Min. Tracking Elev. [deg]: 13
Laser Polarization @emitter:
Operation
Months per Year : 12
Days per Week : 5
Hours per Day : 15
Staff per Shift : 2
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 : 2010-09-01 HH:MM UT
Date Last Applicable : 2018-10-22 HH:MM UT
Additional Information : The maximum tracking range of our system
: is 26,000km.
7.05 Satellites
Very Low Alt (<400 km) : NO
Low Altitude (400-2000) : YES
LAGEOS/LARES : YES
GLONASS : NIGHT
Etalon : NIGHT
GNSS : NIGHT
Geosynchronous :
Moon : NO
Ave. Pass Switch Time [s]: 30
Average values for LAGEOS
Single Shot RMS [mm]: 20
# of Obs per NP : 20
Use of Semi-trains : NO
# of Semi-train Tracks : N.A.
Range Gate Width [ns]: 100 - 50000
Beam Pointing Accuracy ["]: 3
Angle Encoder Resolution["]: 1.24
Min. Tracking Elev. [deg]: 13
Laser Polarization @emitter:
Operation
Months per Year : 12
Days per Week : 5
Hours per Day : 15
Staff per Shift : 2
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 : 2018-10-23 HH:MM UT
Date Last Applicable :
Additional Information :
Back to top
8. Calibration
8.01 Calibration Type : PRE+POST
Target Location : EXTERNAL
Target Type : CORNER CUBE
Target Structure : STEEL TOWER
Number of Targets :
Target Distance(s) [m]: 1414.699
Date Measured : 1999-07-DD
Accuracy [mm]: 3
Verification : 1997-07
Return-Rate Controlled : YES
Eye-Safe Method :
Additional Information :
Mode of Operation : SINGLE/MULTI PHOTON
Calibration performed : 30
Single Shot RMS [mm]: 10
Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA
Edit Criterion 2nd Chain : N.A.
Application of Cal Data : AVERAGE
Date Installed : 1982-03-01
Date Removed : 2006-06-30
Additional Information :
8.02 Calibration Type : PRE+POST
Target Location : EXTERNAL
Target Type : CORNER CUBE
Target Structure : STEEL TOWER
Number of Targets :
Target Distance(s) [m]: 16.490
Date Measured : 2006-06-26
Accuracy [mm]: 1
Verification :
Return-Rate Controlled : YES
Eye-Safe Method :
Additional Information :
Mode of Operation : SINGLE/MULTI PHOTON
Calibration performed : 30
Single Shot RMS [mm]: 6
Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA
Edit Criterion 2nd Chain : N.A.
Application of Cal Data : AVERAGE
Date Installed : 2006-07-01
Date Removed : 2006-08-03
Additional Information : Experimental
8.03 Calibration Type : PRE+POST
Target Location : EXTERNAL
Target Type : CORNER CUBE
Target Structure : STEEL TOWER
Number of Targets :
Target Distance(s) [m]: 1414.710
Date Measured : 2006-07-DD
Accuracy [mm]: 3
Verification : 2006-07
Return-Rate Controlled : YES
Eye-Safe Method :
Additional Information :
Mode of Operation : SINGLE/MULTI PHOTON
Calibration performed : 30
Single Shot RMS [mm]: 10
Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA
Edit Criterion 2nd Chain : N.A.
Application of Cal Data : AVERAGE
Date Installed : 2006-08-04
Date Removed : 2006-08-31
Additional Information : Same as 8.01 but remeasured
8.04 Calibration Type : PRE+POST
Target Location : EXTERNAL
Target Type : CORNER CUBE
Target Structure : STEEL TOWER
Number of Targets :
Target Distance(s) [m]: 16.490
Date Measured : 2006-06-26
Accuracy [mm]: 1
Verification :
Return-Rate Controlled : YES
Eye-Safe Method :
Additional Information :
Mode of Operation : SINGLE/MULTI PHOTON
Calibration performed : 30
Single Shot RMS [mm]: 6
Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA
Edit Criterion 2nd Chain : N.A.
Application of Cal Data : AVERAGE
Date Installed : 2006-09-01
Date Removed : 2006-09-14
Additional Information : Same target as 8.02. (Experimental)
8.05 Calibration Type : PRE+POST
Target Location : EXTERNAL
Target Type : CORNER CUBE
Target Structure : STEEL TOWER
Number of Targets :
Target Distance(s) [m]: 1414.710
Date Measured : 2006-07-DD
Accuracy [mm]: 3
Verification : 2006-07
Return-Rate Controlled : YES
Eye-Safe Method :
Additional Information :
Mode of Operation : SINGLE/MULTI PHOTON
Calibration performed : 30
Single Shot RMS [mm]: 10
Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA
Edit Criterion 2nd Chain : N.A.
Application of Cal Data : AVERAGE
Date Installed : 2006-09-15
Date Removed : 2015-06-03
Additional Information : Same target as 8.03
8.06 Calibration Type : PRE+POST
Target Location : INTERNAL
Target Type : CORNER CUBE
Target Structure : TELESCOPE FRAME
Number of Targets :
Target Distance(s) [m]: 0
Date Measured : 2015-06-04
Accuracy [mm]: 1
Verification :
Return-Rate Controlled : YES
Eye-Safe Method :
Additional Information :
Mode of Operation : SINGLE/MULTI PHOTON
Calibration performed : 30
Single Shot RMS [mm]: 6
Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA
Edit Criterion 2nd Chain : N.A.
Application of Cal Data : AVERAGE
Date Installed : 2015-06-04
Date Removed :
Additional Information :
Back to top
9. Time and Frequency Standards
9.01.01 Frequency Standard Type : RUBIDIUM
Model : Rb-1008BD
Manufacturer : NEC
Short Term Stab. [e-12]: 1.27
Long Term Stab. [e-12]: 110000
Time Reference : GPS
Synchronization : GPS
Epoch Accuracy [ns]: 100
Date Installed : 1999-10-19
Date Removed : 2001-06-DD
Additional Information :
9.01.02 Frequency Standard Type : Cesium
Model : 5061B
Manufacturer : Hewlett-Packard
Short Term Stab. [e-12]:
Long Term Stab. [e-12]:
Time Reference : GPS
Synchronization : GPS
Epoch Accuracy [ns]:
Date Installed : 2001-06-DD
Date Removed : 2014-05-DD
Additional Information : This is the secondary clock system.
9.01.03 Frequency Standard Type : Cesium
Model : FC6001A
Manufacturer : FUJITSU
Short Term Stab. [e-12]: 5
Long Term Stab. [e-12]: 3
Time Reference : GPS
Synchronization : GPS
Epoch Accuracy [ns]: 100
Date Installed : 2002-06-DD
Date Removed : 2014-03-31
Additional Information : This is the primary clock system.
9.01.04 Frequency Standard Type : Cesium
Model : 5071A
Manufacturer : Symmetricom
Short Term Stab. [e-12]: 2.7
Long Term Stab. [e-12]: 0.05
Time Reference : GPS
Synchronization : GPS
Epoch Accuracy [ns]:
Date Installed : 2014-04-01
Date Removed :
Additional Information : This is the primary clock system.
9.01.05 Frequency Standard Type : Cesium
Model : 5071A
Manufacturer : Agilent Technologies
Short Term Stab. [e-12]: 2.7
Long Term Stab. [e-12]: 0.05
Time Reference : GPS
Synchronization : GPS
Epoch Accuracy [ns]:
Date Installed : 2014-06-DD
Date Removed :
Additional Information : This is the secondary clock system.
9.02.01 GNSS Timing Rcvr Model : XL-DC
Manufacturer : Truetime
Date Installed : 1995-08-10
Date Removed : 2006-09-19
Additional Information : (multiple lines)
9.02.02 GNSS Timing Rcvr Model : 4000SSi
Manufacturer : Trimble
Date Installed : 2006-09-20
Date Removed : 2010-06-01
Additional Information : (multiple lines)
9.02.03 GNSS Timing Rcvr Model : FURY-10M (Fury GPSDO)
Manufacturer : Digital Signal Technology, Japan
Date Installed : 2010-06-01
Date Removed : 2012-07-31
Additional Information : http://www.dst.co.jp
: http://www.jackson-labs.com/
9.02.04 GNSS Timing Rcvr Model : FURY-10M (Fury GPSDO)
Manufacturer : Digital Signal Technology, Japan
Date Installed : 2012-08-01
Date Removed :
Additional Information : Replaced with the same model.
9.03.01 One-way System Calibration
Date performed :
Direction Calibrated :
Additional Information :
Back to top
10. Preprocessing Information
10.01 On-site NP Generation : YES
Data Screening : CPF+POLYNOMIAL
Return-Rate Rejection :
Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA
Edit Criterion 2nd Chain : N.A.
Upload interval : BETWEEN OBSERVATIONS
Date First Applicable : 1982-03-31 HH:MM UT
Date Last Applicable :
Additional Information :
Back to top
11. Aircraft Detection
11.01 Detection Type : MOUNT OBSERVER
Manufacturer/Provider :
Automatic Laser Shutoff :
Alarms Recorded :
Hazard Distance [km]:
Date Installed : 1982-03-31
Date Removed : 2013-03-31
Additional Information :
11.02 Detection Type : ADS-B DATA/MOUNT OBSERVER
Manufacturer/Provider :
Automatic Laser Shutoff :
Alarms Recorded :
Hazard Distance [km]:
Date Installed : 2013-04-01
Date Removed :
Additional Information :
Back to top
12. Meteorological Instrumentation
12.01.01 Pressure Sensor Model : OW-7-420
Manufacturer : Ota Keiki Seisakusho Co.,LTD
Recording Interval : PER PASS
Accuracy [mbar]: 0.7
Height Diff to SRP [m]: -3.0
Distance from SRP [m]:
Date Installed : 1999-10-07 HH:MM UT
Calibration Interval :
Date Removed : 2022-01-13 HH:MM UT
Additional Information : Since October 7, 2003, we have been adding
: -3.3hPa to the observed values, based on the
: calibration result with Fortin Mercurial
: Barometer.
: The latest calibration was made in 2001.
12.01.02 Pressure Sensor Model : OW-800
Manufacturer : Ota Keiki Seisakusho Co., LTD
Recording Interval : 00:01:00
Accuracy [mbar]: 0.3
Height Diff to SRP [m]:
Distance from SRP [m]:
Date Installed : 2022-01-13 HH:MM UT
Calibration Interval :
Date Removed :
Additional Information : A correction of -0.3 hPa is added
: to the observed values to correct
: the height difference.
: The latest calibration was made in
: Sep. 2021 by Japan Meteorological Agency.
12.02.01 Temp Sensor Model : OW-1-1/PT420-B
Manufacturer : Ota Keiki Seisakusho Co.,LTD
Recording Interval : PER PASS
Accuracy [deg C]: 0.15
Date Installed : 1999-10-07 HH:MM UT
Calibration Interval :
Date Removed : 2022-01-11 HH:MM UT
Additional Information : The latest calibration was made in 2001.
12.02.02 Temp Sensor Model : OW-1-1+PT420-MS
Manufacturer : Ota Keiki Seisakusho Co., LTD
Recording Interval : 00:01:00
Accuracy [deg C]: 0.15
Date Installed : 2022-01-11 HH:MM UT
Calibration Interval :
Date Removed :
Additional Information : The latest calibration was made in
: Sep. 2021 by Japan Meteorological Agency.
12.03.01 Humidity Sensor Model : OW-2-420
Manufacturer : Ota Keiki Seisakusho Co.,LTD
Recording Interval : PER PASS
Accuracy [% rel h]: 5
Date Installed : 1999-10-07 HH:MM UT
Calibration Interval :
Date Removed : 2022-01-11 HH:MM UT
Additional Information : The latest calibration was made in 2001.
12.03.02 Humidity Sensor Model : OW-4
Manufacturer : Ota Keiki Seisakusho Co., LTD
Recording Interval : 00:01:00
Accuracy [% rel h]: 2
Date Installed : 2022-01-11 HH:MM UT
Calibration Interval :
Date Removed :
Additional Information : The latest calibration was made in
: Sep. 2021 by Japan Meteorological Agency.
Back to top
13. Local Ties, Eccentricities, and Collocation Information
13.01 Collocated Permanent Geodetic Systems
13.01.01.01 GNSS : YES
Date Installed : 1995-08-01
Date Removed :
Additional Info : IGS Station: SMST 21726M001
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 : Simosato
Instrumentation Type : GNSS
Instrumentation Status : PERMANENT
DOMES Number :
CDP Number :
Differential Components (ITRS)
dx [m]: 13.67 +- 0
dy [m]: -2.43 +- 0
dz [m]: 13.87 +- 0
Date Measured :
Determined by :
Date Installed : 1995-08-15
Date Removed :
Additional Information :
13.02.02.01 Local Ties from the SRP to Other Monuments or Systems on Site
Monument Name : Simosato Stone Marker
Instrumentation Type :
Instrumentation Status : PERMANENT
DOMES Number : 21726M001
CDP Number :
Differential Components (ITRS)
dx [m]: 14.960 +- 0
dy [m]: -3.684 +- 0
dz [m]: 12.672 +- 0
Date Measured :
Determined by :
Date Installed : 1980-09-15
Date Removed :
Additional Information :
13.02.03.01 Local Ties from the SRP to Other Monuments or Systems on Site
Monument Name : SMST
Instrumentation Type : STONE MARKER
Instrumentation Status : PERMANENT
DOMES Number : 21726M001
CDP Number : 7838
Differential Components (ITRS)
dx [m]: 14.9716 +- 0.0045
dy [m]: -3.6795 +- 0.0047
dz [m]: 12.7028 +- 0.0042
Date Measured : 2020-11-13
Determined by : Triangulation, GNSS, levelling
Date Installed : 1980-09-15
Date Removed :
Additional Information : Stone marker of IGS station SMST.
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 :
Back to top
14. Local Events Possibly Affecting Computed Position
14.01 Date : 2004-09-05 10:07 UT
Event : EARTHQUAKE
Additional Information : M7.4 at 137.09E 33.11N
: M6.9 at 136.78E 33.05N
: Two large earthquakes occurred about 100km
: southeast of Simosato station.
: The southward and downward co-seismic
: movement of about 2cm
14.02 Date : 2004-09-05 14:57 UT
Event : EARTHQUAKE
Additional Information : See also 14.01
14.03 Date : 2011-03-11 05:46 UT
Event : EARTHQUAKE
Additional Information : A Large earthquake (Mw9.0) occurred
: off the Pacific coast of the Tohoku district,
: Japan. The eastward co-seismic movement of
: about 3 cm was detected associated
: with the event.
Back to top
15. On-Site, Point of Contact Agency Information
Agency : Shimosato Hydrographic Observatory (SHO),
: Japan Coast Guard
Mailing Address : 1981, Shimosato, Nachi Katsuura-cho,
: Higashi Muro-gun, Wakayama 649-5142, Japan
Website : https://www1.kaiho.mlit.go.jp/shimosato
: /English/index.html
Primary Contact
Contact Name : Michihiro Suzuki
Telephone (primary) : +81 735 58 0084
Telephone (secondary) :
Fax : +81 735 58 1535
E-mail : eisei@jodc.go.jp
Secondary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Tertiary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Additional Information :
Back to top
16. Responsible Agency (if different from 15.)
Agency : Hydrographic and Oceanographic Department,
: Japan Coast Guard
Mailing Address : Geodesy and Geophysics Office,
: Coastal Surveys Division,
: Hydrographic and Oceanographic Department
: 3-1-1, Kasumigaseki, Chiyoda-ku,
: Tokyo 100-8932, Japan
Primary Contact
Contact Name : Yuto Nakamura
Telephone (primary) : +81 3 3595 3632
Telephone (secondary) :
Fax : +81 3 3595 3633
E-mail : eisei@jodc.go.jp
Secondary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Additional Information :
Back to top
17. More Information
URL for More Information : https://www1.kaiho.mlit.go.jp/shimosato
: /English/index.html
Hardcopy on File
Site Map : YES
Site Diagram : YES
Horizon Mask : YES
Monument Description : YES
Site Pictures : YES
Additional Information :
Back to top
- NASA Official: Frank Lemoine
- Web Curator: Lori J. Tyahla
- Contact Us
- Last modified date: Apr 5, 2024
- Privacy Policy & Important Notices
