GODE00USA 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) : Tatevik Shakhbandaryan Date Prepared : 2023-03-05 Report Type : UPDATE If Update: Previous Site Log : gode_20220125.log Modified/Added Sections : 3.12,3.13 1. Site Identification of the GNSS Monument Site Name : GGAO (Greenbelt) Nine Character ID : GODE00USA Monument Inscription : JPL 4006 IERS DOMES Number : 40451M123 CDP Number : none Monument Description : PILLAR Height of the Monument : 0.5 m Monument Foundation : CONCRETE PIER Foundation Depth : Marker Description : DIVOT on stainless steel plate Date Installed : 1993-04-02T00:00Z Geologic Characteristic : Bedrock Type : Bedrock Condition : Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : See Question #5 : There appears to be an error in Question #5, : Table "GORF 1993 HAVAGO ADJUSTMENT", the first : line indicates that CDP 7102 corresponds to : IERS-40451-DOMES# M123. According to "IERS : Technical Note 20, Results and Analysis of the : ITRF94" March 1996, Table T2 "Directory of IERS : Stations" pT21, CDP 7102 corresponds to : 40451M102. GODE, 40451M123, does not have a CDP : number. 2. Site Location Information City or Town : Greenbelt State or Province : Maryland Country or Region : USA Tectonic Plate : NORTH AMERICAN Approximate Position (ITRF) X coordinate (m) : 1130773.7180 Y coordinate (m) : -4831253.5810 Z coordinate (m) : 3994200.4220 Latitude (N is +) : +390118.22 Longitude (E is +) : -0764936.59 Elevation (m,ellips.) : 14.5 Additional Information : 3. GNSS Receiver Information 3.1 Receiver Type : ROGUE SNR-8000 Satellite System : GPS Serial Number : 129 Firmware Version : 93.06.08 Elevation Cutoff Setting : 4 deg Date Installed : 1993-04-17T00:00Z Date Removed : 1994-12-12T00:00Z Temperature Stabiliz. : none Additional Information : 3.2 Receiver Type : ROGUE SNR-8000 Satellite System : GPS Serial Number : R148 Firmware Version : 3.2 Elevation Cutoff Setting : 4 deg Date Installed : 1994-12-12T00:00Z Date Removed : 1999-05-18T14:45Z Temperature Stabiliz. : none Additional Information : 3.3 Receiver Type : AOA SNR-12 ACT Satellite System : GPS Serial Number : R253-U Firmware Version : 3.3.32.2 Elevation Cutoff Setting : 4 deg Date Installed : 1999-05-18T14:45Z Date Removed : 2002-04-16T18:00Z Temperature Stabiliz. : none Additional Information : operated at 1s samprate : converted to 30s data at JPL : using do_npt with lfit_2 option 3.4 Receiver Type : AOA SNR-12 ACT Satellite System : GPS Serial Number : R253-U Firmware Version : 3.3.32.5 Elevation Cutoff Setting : 4 deg Date Installed : 2002-04-16T18:00Z Date Removed : 2002-05-03T19:00Z Temperature Stabiliz. : none Additional Information : firmware update, : now run at 30s samprate 3.5 Receiver Type : AOA SNR-8000 ACT Satellite System : GPS Serial Number : T341-U Firmware Version : 3.3.32.5 Elevation Cutoff Setting : 4 deg Date Installed : 2002-05-03T19:10Z Date Removed : 2006-04-10T13:10Z Temperature Stabiliz. : none Additional Information : failed receiver replacement 3.6 Receiver Type : ASHTECH UZ-12 Satellite System : GPS Serial Number : ZR520013801 Firmware Version : CQ00 Elevation Cutoff Setting : 4 deg Date Installed : 2006-04-11T00:00Z Date Removed : 2018-09-27T14:45Z Temperature Stabiliz. : none Additional Information : 3.7 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS Serial Number : 3013928 Firmware Version : 5.0.3 Elevation Cutoff Setting : 0 deg Date Installed : 2018-09-27T16:45Z Date Removed : 2019-09-11T19:30Z Temperature Stabiliz. : none Additional Information : 3.8 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS Serial Number : 3013928 Firmware Version : 5.2.0 Elevation Cutoff Setting : 0 deg Date Installed : 2019-09-11T19:30Z Date Removed : 2019-09-11T21:17Z Temperature Stabiliz. : none Additional Information : 3.9 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS Serial Number : 3013928 Firmware Version : 0.0.0-181002 Elevation Cutoff Setting : 0 deg Date Installed : 2019-09-11T21:17Z Date Removed : 2019-12-31T07:50Z Temperature Stabiliz. : none Additional Information : 3.10 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS Serial Number : 3013928 Firmware Version : 5.3.0 Elevation Cutoff Setting : 0 deg Date Installed : 2019-12-31T07:50Z Date Removed : 2020-01-31T20:09Z Temperature Stabiliz. : none Additional Information : 3.11 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS Serial Number : 3013928 Firmware Version : 5.3.2 Elevation Cutoff Setting : 0 deg Date Installed : 2020-01-31T20:09Z Date Removed : 2021-02-03T22:48Z Temperature Stabiliz. : none Additional Information : 3.12 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS Serial Number : 3013928 Firmware Version : 5.4.0 Elevation Cutoff Setting : 0 deg Date Installed : 2021-02-03T22:48Z Date Removed : 2023-03-02T20:21Z Temperature Stabiliz. : none Additional Information : 3.13 Receiver Type : SEPT POLARX5TR Satellite System : GPS+GLO+GAL+BDS Serial Number : 3013928 Firmware Version : 5.5.0 Elevation Cutoff Setting : 0 deg Date Installed : 2023-03-02T20:21Z 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 : AOAD/M_T JPLA Serial Number : 129 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0614 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : JPLA Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 1993-04-17T00:00Z Date Removed : 2001-06-01T17:00Z Additional Information : 4.2 Antenna Type : AOAD/M_T JPLA Serial Number : 129 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0614 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : JPLA Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 2001-06-01T19:00Z Date Removed : 2012-07-07T00:10Z Additional Information : antenna electronics modified internally; : LNA replaced with lower NF unit, : bandpass element relocated from between : antenna element and LNA, to after LNA. : Note radome changes (on/off) in 2002 - : (local survey/testing) : DAY Dome Removed Dome Replaced : 135 13:30 UTC 21:30 UTC : 136 15:30 UTC 20:30 UTC : 141 14:00 UTC 19:00 UTC : 144 13:30 UTC 21:00 UTC : 148 13:30 UTC 21:00 UTC : 150 14:00 UTC 21:00 UTC : 151 13:30 UTC 21:00 UTC 4.3 Antenna Type : AOAD/M_T NONE Serial Number : 129 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0614 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 : Antenna Cable Length : Date Installed : 2012-07-07T00:10Z Date Removed : 2012-07-21T23:15Z Additional Information : radome temporarily removed to facilitate : a NOAA/NGS site survey and to support : IGS activities regarding in-situ calibrations. : antenna amplifier failed antenna swap needed 4.4 Antenna Type : TRM29659.00 NONE Serial Number : 0220135750 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0614 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 : Antenna Cable Length : Date Installed : 2012-07-24T17:35Z Date Removed : 2012-08-02T11:15Z Additional Information : temporary antenna installed : failed AOA/M_T antenna repaired : Trimble antenna removed 4.5 Antenna Type : AOAD/M_T NONE Serial Number : 129 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0614 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 : Antenna Cable Length : Date Installed : 2012-08-07T13:19Z Date Removed : 2012-11-15T17:10Z Additional Information : antenna received new amplifier : AOA antenna reinstalled on monument 4.6 Antenna Type : AOAD/M_T NONE Serial Number : 129 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0614 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 : Antenna Cable Length : Date Installed : 2012-11-15T17:10Z Date Removed : 2012-12-13T18:00Z Additional Information : the antenna once again failed and : a new amplifier was installed 4.7 Antenna Type : AOAD/M_T JPLA Serial Number : 129 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0614 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : JPLA Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 2012-12-13T18:28Z Date Removed : 2013-01-30T17:00Z Additional Information : JPLA dome reinstalled 4.8 Antenna Type : AOAD/M_T NONE Serial Number : 129 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0614 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 : Antenna Cable Length : Date Installed : 2013-01-30T17:00Z Date Removed : 2013-01-30T18:15Z Additional Information : JPLA dome removed. : See section 10.8 for additional information. 4.9 Antenna Type : AOAD/M_T JPLA Serial Number : 129 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0614 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : JPLA Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 2013-01-30T18:15Z Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : JPLA dome reinstalled 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 5.1 Tied Marker Name : Tied Marker Usage : Tied Marker CDP Number : Tied Marker DOMES Number : Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : dy (m) : dz (m) : Accuracy (mm) : Survey method : Date Measured : (CCYY-MM-DDThh:mmZ) Additional Information : see IGSMAIL #233 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 : EXTERNAL H-MASER Input Frequency : 5.0 MHz Effective Dates : 1993-08-01/1999-11-03 Notes : clock steering disabled 6.2 Standard Type : INTERNAL Input Frequency : Effective Dates : 1999-11-03/1999-11-05 Notes : clock steering enabled 6.3 Standard Type : EXTERNAL H-MASER Input Frequency : 5.0 MHz Effective Dates : 1999-11-05/2002-06-03 Notes : clock steering disabled 6.4 Standard Type : INTERNAL Input Frequency : Effective Dates : 2002-06-03/2002-06-25 Notes : clock steering enabled 6.5 Standard Type : EXTERNAL H-MASER Input Frequency : 5.0 MHz Effective Dates : 2002-06-25/2008-02-04 Notes : clock steering disabled 6.6 Standard Type : EXTERNAL H-MASER Input Frequency : 5.0 MHz Effective Dates : 2008-02-04/2008-02-04 Notes : clock steering disabled : during this minute the H-Maser lost : phase lock, and the LO was drifting 6.7 Standard Type : EXTERNAL H-MASER Input Frequency : 5.0 MHz Effective Dates : 2008-02-04/2008-02-06 Notes : clock steering disabled : normal H-Maser operations 6.8 Standard Type : EXTERNAL H-MASER Input Frequency : 5.0 MHz Effective Dates : 2008-02-06/2008-02-06 Notes : clock steering disabled : during this maintenance period the : H-Maser lost phase lock, and the : LO was drifting 6.9 Standard Type : EXTERNAL H-MASER Input Frequency : 5.0 MHz Effective Dates : 2008-02-06/2011-03-02 Notes : clock steering disabled : normal H-Maser operations 6.10 Standard Type : EXTERNAL H-MASER Input Frequency : 5.0 MHz Effective Dates : 2011-03-02/2018-09-27 Notes : a Sigma Tau Maser 6.11 Standard Type : EXTERNAL H-MASER Input Frequency : 10.0 MHz Effective Dates : 2018-09-27/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 7.1 Instrumentation Type : SLR/VLBI Status : PERMANENT Effective Dates : CCYY-MM-DD/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 10.1 Date : 2002-05-15/2002-05-31 Event : see section 4.2 of sitelog for detail 10.2 Date : 2003-09-10/2003-09-10 Event : Antenna removed/replaced for survey : (14:02-20:35UTC) 10.3 Date : 2009-09-30/2009-09-30 Event : Radome removed/replaced for survey : (16:49-19:55UTC) 10.4 Date : 2012-02-07/2012-02-07 Event : Transition from .soc to .ash data types. : For soc data types used soc2rnx to do the : conversion to RINEX data. For ash data types : using teqc directly to do the conversion to : RINEX data. 10.5 Date : 2012-02-28/2012-02-28 Event : Transition from .ash to .soc data types. : For ash data types used teqc directly to : do the conversion to RINEX data. For soc : data types using soc2rnx to do the conversion : to RINEX data. 10.6 Date : 2012-07-09/2012-07-09 Event : NGS running levels to the choke ring. : There may be some temporary masking of the : satellites while work is being done around the : antenna. 10.7 Date : 2012-07-21/2012-08-07 Event : LNA of AOA antenna failed while the in-situ : IGS dome calibration experiment was in process : (dome removed). A temporary Trimbe antenna was : installed while the AOA antenna was repaired. 10.8 Date : 2013-01-30/2013-01-30 Event : Dome was removed from 17:00 to 18:15 UTC for : re-installation of the circulation fan, : charcoal, and sealing of dome base. 10.9 Date : 2015-09-10/2015-09-10 Event : Transitioned from .soc to .ash data types. : For soc data types used soc2rnx to do the : conversion to RINEX data. For ash data types : using teqc directly to do the conversion to : RINEX data. 10.10 Date : 2016-11-30/2016-12-09 Event : nearby construction vehicles and activity from : Nov30-Dec9 2016. 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 : NASA/GSFC : Greenbelt, MD 20771 USA Primary Contact Contact Name : Irv Diegel Telephone (primary) : 301-805-3959 Telephone (secondary) : Fax : 301-805-3974 E-mail : Irv.Diegel@Honeywell.com Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : 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 Network Engineer Telephone (primary) : 303-381-7500 Telephone (secondary) : Fax : 303-381-7451 E-mail : ggn-ops@postal.unavco.org Additional Information : 13. More Information Primary Data Center : JPL Secondary Data Center : CDDIS URL for More Information : Hardcopy on File Site Map : Site Diagram : Horizon Mask : Monument Description : Site Pictures : Additional Information : Antenna Graphics with Dimensions TURBOROGUE: AOA/M_T ----- / + \ <-- 0.128 L2 | + | <-- 0.110 L1 +--------------------------------------------------+ <-- 0.102 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.038 +-------------------+-------------+--------------------+ <-- 0.035 BCR | | =| | +----+-x-+----+ ------------ <-- 0.000 BPA=ARP | | | | | | | | "Spike" | | 6.14 cm \ / | \ / | V | Stainless-steel =====================X======================== plate in concrete pier. "X" is survey reference point. <-- 0.381 --> ARP: Antenna Reference Point BPA: Bottom of Preamplifier L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering