GODR Site Information Form (site log) International GNSS Service See Instructions at: ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Tatevik Shakhbandaryan Date Prepared : 2017-04-18 Report Type : UPDATE If Update: Previous Site Log : godr_20170131.log Modified/Added Sections : 0,3.8,3.9 1. Site Identification of the GNSS Monument Site Name : GGAO Short Drilled Braced Monument Four Character ID : GODR Monument Inscription : IERS DOMES Number : UNKN CDP Number : Monument Description : SHORT DRILL BRACED MONUMENT Height of the Monument : 2 m Monument Foundation : 1 inch diameter steel rod, drilled and : grouted 4.5 feet into the bedrock. Foundation Depth : 1.25 m Marker Description : SCIGN MOUNT MARK Date Installed : Geologic Characteristic : BEDROCK Bedrock Type : Bedrock Condition : WEATHERED Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : 2. Site Location Information City or Town : Greenbelt State or Province : Maryland Country : United States Tectonic Plate : NORTH AMERICAN Approximate Position (ITRF) X coordinate (m) : 1130724.6170 Y coordinate (m) : -4831390.4761 Z coordinate (m) : 3994057.6300 Latitude (N is +) : +390112.1289 Longitude (E is +) : -0764939.8740 Elevation (m,ellips.) : 19.4665 Additional Information : 3. GNSS Receiver Information 3.1 Receiver Type : TRIMBLE NETR9 Satellite System : Serial Number : 5423R48784 Firmware Version : 5.01 Elevation Cutoff Setting : Date Installed : 2015-09-23T17:00Z Date Removed : 2015-10-23T20:00Z Temperature Stabiliz. : none Additional Information : 3.2 Receiver Type : TRIMBLE NETR9 Satellite System : Serial Number : 5423R48784 Firmware Version : 5.03 Elevation Cutoff Setting : Date Installed : 2015-10-23T20:13Z Date Removed : 2016-02-03T18:29Z Temperature Stabiliz. : none Additional Information : 3.3 Receiver Type : TRIMBLE NETR9 Satellite System : Serial Number : 5423R48784 Firmware Version : 5.10 Elevation Cutoff Setting : Date Installed : 2016-02-03T18:30Z Date Removed : 2016-10-17 Temperature Stabiliz. : none Additional Information : 3.4 Receiver Type : TRIMBLE NETR9 Satellite System : Serial Number : 5423R48784 Firmware Version : 5.14 Elevation Cutoff Setting : Date Installed : 2016-10-17 Date Removed : 2016-12-14T23:30Z Temperature Stabiliz. : none Additional Information : 3.5 Receiver Type : TRIMBLE NETR9 Satellite System : Serial Number : 5423R48784 Firmware Version : 5.15 Elevation Cutoff Setting : Date Installed : 2016-12-14T23:30Z Date Removed : 2017-01-12T19:23Z Temperature Stabiliz. : none Additional Information : 3.6 Receiver Type : TRIMBLE NETR9 Satellite System : GPS Serial Number : 5423R48784 Firmware Version : 5.20 Elevation Cutoff Setting : 0 Date Installed : 2017-01-12T19:24Z Date Removed : 2017-01-24T21:59Z Temperature Stabiliz. : none Additional Information : 3.7 Receiver Type : TRIMBLE NETR9 Satellite System : GPS Serial Number : 5423R48784 Firmware Version : 5.15 Elevation Cutoff Setting : 0 Date Installed : 2017-01-24T22:00Z Date Removed : 2017-01-25T16:59Z Temperature Stabiliz. : none Additional Information : 3.8 Receiver Type : TRIMBLE NETR9 Satellite System : GPS Serial Number : 5423R48784 Firmware Version : 5.20 Elevation Cutoff Setting : 0 Date Installed : 2017-01-25T17:00Z Date Removed : 2017-04-18T17:30Z Temperature Stabiliz. : none Additional Information : 3.9 Receiver Type : TRIMBLE NETR9 Satellite System : GPS Serial Number : 5423R48784 Firmware Version : 5.22 Elevation Cutoff Setting : 0 Date Installed : 2017-04-18T17:31Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : none 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 : TRM59800.00 Serial Number : 5506356058 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : Times LMR400 Antenna Cable Length : 25 m Date Installed : 2015-09-23T18:00Z Date Removed : CCYY-MM-DDThh:mmZ Additional Information : 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.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 7.1 Instrumentation Type : SLR/VLBI/DORIS/GNSS Status : PERMANENT Effective Dates : 2012-01-14/CCYY-MM-DD Notes : 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 : NASA Goddard Space Flight Center Preferred Abbreviation : GSFC Mailing Address : Space Geodesy Branch, Code 926.9 : 8800 Greenbelt Road : Greenbelt, MD 20771 USA Primary Contact Contact Name : Mike Perry Telephone (primary) : 301-286-5300 Telephone (secondary) : Fax : E-mail : michael.a.perry@nasa.gov Secondary Contact Contact Name : James Long Telephone (primary) : 301-286-9836 Telephone (secondary) : Fax : E-mail : james.l.long@nasa.gov Additional Information : 12. Responsible Agency (if different from 11.) Agency : Jet Propulsion Laboratory Preferred Abbreviation : JPL Mailing Address : 4800 Oak Grove Drive : Pasadena, CA 91109 USA Primary Contact Contact Name : David A. Stowers Telephone (primary) : 818-354-7055 Telephone (secondary) : Fax : 818-393-4965 E-mail : dstowers@jpl.nasa.gov Secondary Contact Contact Name : UNAVCO Telephone (primary) : 303-381-7500 Telephone (secondary) : Fax : 303-381-7451 E-mail : ggn-ops@ls.unavco.org Additional Information : ggn@jpl.nasa.gov 13. More Information Primary Data Center : JPL Secondary Data Center : URL for More Information : Hardcopy on File Site Map : Site Diagram : Horizon Mask : Monument Description : Site Pictures : Additional Information : Antenna Graphics with Dimensions TRM59800.00 ----- / \ | | +-------------------------------------------------+ <-- 0.1020 TCR | | | | | | | | +-+-------------------------------------------------+-+ <-- 0.0381 +-------------------+-------------+-------------------+ <-- 0.0350 BCR | | =| | +------x------+ <-- 0.0000 BPA=ARP RXC=NRP <-- 0.3810 --> Abbreviations ------------- ARP: antenna reference point BAM: bottom of antenna mount BCR: bottom of chokering BDG: bottom of dome ground plane BGP: bottom of ground plane BPA: bottom of preamplifier TCR: top of chokering TDG: top of dome ground plane TGP: top of ground plane TOP: top of pole TPA: top of preamplifier Dimensions ---------- All dimensions are in meters.