COSO00USA Site Information Form (site log) International GNSS Service See Instructions at: https://files.igs.org/pub/station/general/sitelog_instr_v2.0.txt 0. Form Prepared by (full name) : Ryan Turner Date Prepared : 2024-10-07 Report Type : UPDATE If Update: Previous Site Log : coso00usa_20210825.log Modified/Added Sections : 1, 3.1, 3.2, 3.3, 3.4, 4.3, 11, 13 1. Site Identification of the GNSS Monument Site Name : China Lake Nine Character ID : COSO00USA Monument Inscription : IERS DOMES Number : 40469M001 CDP Number : Monument Description : rock-pin Height of the Monument : Monument Foundation : Foundation Depth : Marker Description : Top of spline Date Installed : 1995-08-16T00:00Z Geologic Characteristic : Bedrock Type : BEDROCK Bedrock Condition : Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : stainless steel baseplate, nut, threaded pst, : stainless adaptor welded onto rod... baseplate : is 5/8 in. thick, distance from bottom of plate : to top of adaptor is 2&3/32 in., washer is : 19/32 : in. in ht. pj, 12/13/2001: geodetic reference : point changed from 'Top of 1" diameter ring : welded to 3/4" diameter rod' 2. Site Location Information City or Town : Coso Junction State or Province : California Country or Region : USA Tectonic Plate : NORTH AMERICAN Approximate Position (ITRF) X coordinate (m) : -2411148.2861 Y coordinate (m) : -4571430.2322 Z coordinate (m) : 3727461.4502 Latitude (N is +) : +355856.44 Longitude (E is +) : -1174832.00 Elevation (m,ellips.) : 1455.2 Additional Information : Inyo County. 3. GNSS Receiver Information 3.1 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : 03233 Firmware Version : NAV 1E00 CHN 1C50 Elevation Cutoff Setting : Date Installed : 1995-08-16T00:00Z Date Removed : 1998-06-29T20:00Z Temperature Stabiliz. : Additional Information : First measurements. (Loaner II-93) 3.2 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP02782 Firmware Version : 1F50 Elevation Cutoff Setting : Date Installed : 1998-06-29T20:00Z Date Removed : 1999-07-27T00:00Z Temperature Stabiliz. : Additional Information : SCIGN receiver swap battery bkp. upgrade (Z12) : Model 700845-10(E) 3.3 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP02768 Firmware Version : CC00 Elevation Cutoff Setting : 10 deg Date Installed : 1999-07-27T00:00Z Date Removed : 2010-01-08T00:35Z Temperature Stabiliz. : Additional Information : Receiver swap and firmware upgrade for GPS week : rollover-compliance. 3.4 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4927175312 Firmware Version : 1.2-5 Elevation Cutoff Setting : 0 deg Date Installed : 2010-01-08T00:45Z Date Removed : 2018-03-30T20:58Z Temperature Stabiliz. : Additional Information : 3.5 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4927175264 Firmware Version : 1.2-5 Elevation Cutoff Setting : 5 deg Date Installed : 2018-03-30T20:58Z Date Removed : 2018-04-05T18:35Z Temperature Stabiliz. : Additional Information : 3.6 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4927175264 Firmware Version : 1.3-2 Elevation Cutoff Setting : 5 deg Date Installed : 2018-04-05T18:45Z Date Removed : 2019-12-12T21:00Z Temperature Stabiliz. : Additional Information : 3.7 Receiver Type : SEPT POLARX5 Satellite System : GPS+GLO+GAL+SBAS Serial Number : 3012249 Firmware Version : 5.3.0 Elevation Cutoff Setting : 0 deg Date Installed : 2019-12-12T21:37Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : Additional Information : 3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions) Satellite System : (GPS+GLO+GAL+BDS+QZSS+SBAS) Serial Number : (A20, but note the first A5 is used in SINEX) Firmware Version : (A11) Elevation Cutoff Setting : (deg) Date Installed : (CCYY-MM-DDThh:mmZ) Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 4. GNSS Antenna Information 4.1 Antenna Type : ASH700228B SNOW Serial Number : B1163 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0663 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : Antenna Radome Type : SNOW Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 1995-08-16T00:00Z Date Removed : 1996-04-29T00:00Z Additional Information : 4.2 Antenna Type : ASH700936D_M SNOW Serial Number : CR12660 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.2430 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : Antenna Radome Type : SNOW Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 1996-04-29T00:00Z Date Removed : 2019-12-12T21:00Z Additional Information : Direct height measurement from top of SS collar : on threaded rod to pre-amp base. ASHTECH Choke : Ring Model 700936 (Rev. D) PJ changed height : from .0625 on 12/13/2001 based on change in : geodetic reference point top of collar to top : of : spline a few cm off the ground. This is the : standard grp for this monument type. bottom of : the monument 4.3 Antenna Type : TWIVC6050 SCIS Serial Number : VC6150L1907310007 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.2430 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : SCIS Radome Serial Number : 2717 Antenna Cable Type : Antenna Cable Length : Date Installed : 2019-12-12T21:37Z Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : Aspiotes verified the height 0.2430. This is : based on geodetic reference point top of collar : to top of spline a few cm off the ground. This : is the standard grp for this monument type. The : distance from the top of the collar on the : threaded rod to the pre-amp base is 0.061. 4.x Antenna Type : (A20, from rcvr_ant.tab; see instructions) Serial Number : (A*, but note the first A5 is used in SINEX) Antenna Reference Point : (BPA/BCR/XXX from "antenna.gra"; see instr.) Marker->ARP Up Ecc. (m) : (F8.4) Marker->ARP North Ecc(m) : (F8.4) Marker->ARP East Ecc(m) : (F8.4) Alignment from True N : (deg; + is clockwise/east) Antenna Radome Type : (A4 from rcvr_ant.tab; see instructions) Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : (CCYY-MM-DDThh:mmZ) Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : (multiple lines) 5. Surveyed Local Ties 5.x Tied Marker Name : Tied Marker Usage : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc) Tied Marker CDP Number : (A4) Tied Marker DOMES Number : (A9) Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : (m) dy (m) : (m) dz (m) : (m) Accuracy (mm) : (mm) Survey method : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc) Date Measured : (CCYY-MM-DDThh:mmZ) Additional Information : (multiple lines) 6. Frequency Standard 6.1 Standard Type : INTERNAL Input Frequency : Effective Dates : 1995-08-16/CCYY-MM-DD Notes : 6.x Standard Type : (INTERNAL or EXTERNAL H-MASER/CESIUM/etc) Input Frequency : (if external) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 7. Collocation Information 7.x Instrumentation Type : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc) Status : (PERMANENT/MOBILE) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8. Meteorological Instrumentation 8.1.x Humidity Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy (% rel h) : (% rel h) Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.2.x Pressure Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (hPa) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.3.x Temp. Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (deg C) Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.4.x Water Vapor Radiometer : Manufacturer : Serial Number : Distance to Antenna : (m) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.5.x Other Instrumentation : (multiple lines) 9. Local Ongoing Conditions Possibly Affecting Computed Position 9.1.x Radio Interferences : (TV/CELL PHONE ANTENNA/RADAR/etc) Observed Degradations : (SN RATIO/DATA GAPS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.2.x Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.3.x Signal Obstructions : (TREES/BUILDINGS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 10. Local Episodic Effects Possibly Affecting Data Quality 10.x Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 11. On-Site, Point of Contact Agency Information Agency : USGS Southern California Geodetic Network Preferred Abbreviation : SCGN Mailing Address : 525 South Wilson Avenue. Pasadena, CA 91106 Primary Contact Contact Name : USGS SCGN Operators Telephone (primary) : 650-329-4677 Telephone (secondary) : Fax : E-mail : scgn-operators@usgs.gov Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : 12. Responsible Agency (if different from 11.) Agency : (multiple lines) Preferred Abbreviation : (A10) 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) 13. More Information Primary Data Center : CDDIS Secondary Data Center : IGN URL for More Information : https://cddis.nasa.gov/ Hardcopy on File Site Map : Site Diagram : Horizon Mask : Monument Description : Site Pictures : Additional Information : Antenna Graphics with Dimensions ASH700936A_M ASH700936B_M ASH700936C_M ASH700936D_M ----- / + \ <-- 0.128 L2 | + | <-- 0.110 L1 +--------------------------------------------------+ <-- 0.102 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.038 +-------------------+-------------+--------------------+ <-- 0.035 BCR | | =| | +------x------+ <-- 0.000 BPA=ARP <-- 0.381 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering TGP: Top of Ground Plane BGP: Bottom of Ground Plane TPA: Top of Preamplifier BPA: Bottom of Preamplifier TOP: Top of Pole