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)
Wrightwood: 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) : Keith E. Wilson
Preparer E-mail : kwilson@jpl.nasa.gov
Date Prepared : 2005-01-27
Report Type : NEW
Site Log Format Version : 2.0
Site Log Revision :
Back to top
1. Identification of the Ranging System Reference Point (SRP)
Site Name : Wrightwood (OCTL)
IERS DOMES Number : 49901S001
CDP Pad ID : 7040
Subnetwork : NASA
Description : AZ EL INTERSECT
Monument Description : None
Monument Inscription : N.A.
Mark Description : N.A.
Date Installed : N.A.
Date Removed : N.A.
Geologic Characteristic : BEDROCK
Additional Information : The OCTL is a laser communications system.
Back to top
2. Site Location Information
City or Town : Wrightwood
State or Province : California
Country : USA
Tectonic Plate : Pacific/North American plate boundary
Local Time (UTC +/- hours) :
Approximate Position
X coordinate [m]: N.A.
Y coordinate [m]: N.A.
Z coordinate [m]: N.A.
Latitude [deg]: 34.382 N
Longitude [deg]: 117.683 W
Elevation [m]: 2200
Survey Method :
Date Measured :
Additional Information : None
Back to top
3. General System Information
3.01 System Name : OCTL
4-Character Code : OCTL
CDP System Number : 92
CDP Occupation Number : 01
Eccentricity to SRP (if Not Identical With SRP)
North [m]:
East [m]:
Up [m]:
Date Measured :
Date Installed :
Date Removed :
Additional Information :
Back to top
4. Telescope Information
4.01 Receiving Telescope Type : Ritche-Chretien
Aperture [m]: 1-m
Mount : AZ-EL
Date Installed :
Date Removed :
Xmitting Telescope Type : Coude
Aperture [m]: 28-cm
Date Installed :
Date Removed :
Tracking Camera Type : TBD
Model :
Manufacturer :
Field of View [deg]: 0.0287
Minimum Magnitude [mag]: 8
Date Installed :
Date Removed :
Transmit/Receive Path : COMMON COUDE
Transmit/Receive Switch : POLARIZER
Max Slew Rate Az [deg/s]: 20 deg/sec
Max Slew Rate El [deg/s]: 5 deg/sec
Max Used Tracking Rate Az : N.A.
Max Used Tracking Rate El : N.A.
Telescope Shelter : DOME
Daylight Filter Type : SPECTRAL FILTER
Dayl. Filt. Bandwidth [nm]: 1
Adjustable Attenuation : BOTH TRANSMIT & RECEIVE
Adjustable Field of View :
Transmit Efficiency : 58
Receive Efficiency : 50
Date Installed : 2005-MM-DD
Date Removed : N.A.
Additional Information : None
: Max Used Tracking Rate Az: TBD
: Max Used Tracking Rate El: TBD
Back to top
5. Laser System Information
5.01 Laser Type : ND:YAG
Model :
Manufacturer :
Number of Amplifiers : 1
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]: 600
Secondary Wavelength [nm]: 532
Secondary Max. Energy [mJ]: 250
Xmit Energy Adjustable : NO
Additional Information :
Pulse Width (FWHM) [ps]: 7.86
Max. Repetition Rate [Hz]: 51
Fullw. Beam Divergence ["]: 5
Theoretical Beam Div :
Measured Beam Div :
Method Used :
Additional Information :
Final Beam Diameter [m]: 27-cm X 26-cm
Eyesafe : NO
Eyesafe Standard : ANSI 136.1
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 : 2004-10-01
Date Removed : N.A.
Additional Information : None
: Pulse Width: 7.86-nsprimary, 6.6-ns secondary
Back to top
6. Receiver System
6.01.01 Primary Chain
Wavelength [nm]: 1064-nm
Detector Type : InGaAs PD
Manufacturer : Thor Labs
Model : PDA 400
Quantum Efficiency [%]: N.A.
Nominal Gain : 1e5
Rise Time [ps]: N.A.
Jitter (Single PE)[ps]: N.A.
Field of View Diam ["]: N.A.
Date Installed : 2005-MM-DD
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : TBD
Manufacturer :
Model :
Date Installed :
Date Removed :
Amplitude Measurement : YES
Return-Rate Controlled:
Mode of Operation :
Additional Information:
Time of Flight Observ. : N.A.
Manufacturer :
Model :
Resolution [ps]:
Precision [ps]:
Date Installed :
Date Removed :
Additional Information : Field of View Diam: TBD
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) : YES
Low Altitude (400-2000) : YES
LAGEOS/LARES : YES
GLONASS : YES
Etalon : YES
GNSS : YES
Geosynchronous :
Moon : YES
Ave. Pass Switch Time [s]: < 30 sec
Average values for LAGEOS
Single Shot RMS [mm]: N.A.
# of Obs per NP : N.A.
Use of Semi-trains : N.A.
# of Semi-train Tracks : N/A
Range Gate Width [ns]: 20
Beam Pointing Accuracy ["]: 3
Angle Encoder Resolution["]: 0.1 arc sec
Min. Tracking Elev. [deg]: 20
Laser Polarization @emitter:
Operation
Months per Year : 12
Days per Week : 6
Hours per Day : 12
Staff per Shift : 2
System Shared With : R&D & LIDAR
Time Allocated to SLR [%]: N.A.
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 :
Date Last Applicable :
Additional Information : This system will be used primarily to
: validate our scintillation mitigation models.
: Very Low Alt: 250-km high
: Range Gate Width: ~20-ns
: Time Allocated to SLR: TBD
Back to top
8. Calibration
8.01 Calibration Type :
Target Location :
Target Type :
Target Structure :
Number of Targets :
Target Distance(s) [m]:
Date Measured :
Accuracy [mm]:
Verification :
Return-Rate Controlled :
Eye-Safe Method :
Additional Information :
Mode of Operation :
Calibration performed :
Single Shot RMS [mm]:
Edit Criterion 1st Chain :
Edit Criterion 2nd Chain :
Application of Cal Data :
Date Installed :
Date Removed :
Additional Information :
Back to top
9. Time and Frequency Standards
9.01.01 Frequency Standard Type : GPS time & frequency receiver
Model : XL-AK
Manufacturer : TrueTime
Short Term Stab. [e-12]: 10000
Long Term Stab. [e-12]: 300
Time Reference : GPS
Synchronization :
Epoch Accuracy [ns]: 20
Date Installed : 2004-MM-DD
Date Removed :
Additional Information : Short Term Stab.: 10E-9 at 1 sec
: Long Term Stab.: 3E-10 at 100 secs,
: 1E-12 at 24 hours
9.02.01 GNSS Timing Rcvr Model :
Manufacturer :
Date Installed :
Date Removed :
Additional Information :
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 : NO
Data Screening :
Return-Rate Rejection :
Edit Criterion 1st Chain :
Edit Criterion 2nd Chain :
Upload interval :
Date First Applicable :
Date Last Applicable :
Additional Information :
Back to top
11. Aircraft Detection
11.01 Detection Type : RADAR/LWIR camera
Manufacturer/Provider :
Automatic Laser Shutoff :
Alarms Recorded :
Hazard Distance [km]:
Date Installed :
Date Removed :
Additional Information :
Back to top
12. Meteorological Instrumentation
12.01.01 Pressure Sensor Model : PTB220
Manufacturer : Vaisala
Recording Interval : 1 Hz
Accuracy [mbar]: +/- 0.15 hPa
Height Diff to SRP [m]: N/A
Distance from SRP [m]:
Date Installed : 2004-MM-DD HH:MM UT
Calibration Interval : TBD
Date Removed :
Additional Information :
12.02.01 Temp Sensor Model : QMH102
Manufacturer : Vaisala
Recording Interval : 1 Hz
Accuracy [deg C]: 1.0 deg
Date Installed : 2004-MM-DD HH:MM UT
Calibration Interval : TBD
Date Removed :
Additional Information :
12.03.01 Humidity Sensor Model : QMH102
Manufacturer : Vaisala
Recording Interval : 1 Hz
Accuracy [% rel h]: 1%
Date Installed : 2004-MM-DD HH:MM UT
Calibration Interval : TBD
Date Removed :
Additional Information :
Back to top
13. Local Ties, Eccentricities, and Collocation Information
13.01 Collocated Permanent Geodetic Systems
13.01.01.01 GNSS :
Date Installed :
Date Removed :
Additional Info :
13.01.01.02 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 :
Back to top
14. Local Events Possibly Affecting Computed Position
14.01 Date :
Event :
Additional Information :
Back to top
15. On-Site, Point of Contact Agency Information
Agency : NASA JPL
Mailing Address : OCTL TM-29
: P.O. Box 367
: Wrightwood, CA 92397
Website :
Primary Contact
Contact Name : Keith E. Wilson
Telephone (primary) : 760-249-6087
Telephone (secondary) : 760-249-3650
Fax : 760-249-6196
E-mail : kwilson@jpl.nasa.gov
Secondary Contact
Contact Name : Janet Wu
Telephone (primary) : 760-249-6087
Telephone (secondary) : 760-249-3650
Fax : 760-249-6196
E-mail : janet.p.wu@jpl.nasa.gov
Tertiary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Additional Information : K. Wilson 818-354-9387
: J. Wu 818-354-2208
: K. Wilson
: JPL/Caltech
: MS 161-135,
: 4800 Oak Grove Dr.
: Pasadena, CA 91109-8099
Back to top
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 :
Back to top
17. More Information
URL for More Information : N.A.
Hardcopy on File
Site Map : YES
Site Diagram : YES
Horizon Mask : YES
Monument Description : NO
Site Pictures : YES
Additional Information : This information is available on an internal
: JPL website.
Back to top
- NASA Official: Frank Lemoine
- Web Curator: Lori J. Tyahla
- Contact Us
- Last modified date: Nov 5, 2024
- Privacy Policy & Important Notices
