Razmik Khachikyan 2025-11-06 UPDATE GGAO SOUTH DEEP DRILL BRACED MONUMENT GODS 40451M128 none DEEP DRILL BRACED MONUMENT 1.5 1.25 inch SS pipe cemented into 12.192 SCIGN MOUNT MARK 2012-01-13T00:00:00Z SAND/CLAY/CONGLOMERATE LINE OF SIGHT TO VLBI, SLR, DORIS, AND GNSS Greenbelt Maryland United States of America (the) NORTH AMERICAN 1130752.1541 -4831349.1034 3994098.9626 39.0205179273 -76.8273243105 LINE OF SIGHT TO VLBI, SLR, DORIS, AND GNSS 00580 JAVAD TRE_G3TH DELTA GPS+GLO 3.3.5 4 2012-01-14T00:00:00Z 2012-08-30T00:00:00Z 2012-01-14T00:00:00Z 00580 JAVAD TRE_G3TH DELTA GPS+GLO 3.3.12 4 2012-08-30T00:00:00Z 2013-04-01T17:34:00Z 2012-08-30T00:00:00Z 00580 JAVAD TRE_G3TH DELTA GPS+GLO 3.4.7 4 2013-04-01T17:34:00Z 2013-05-22T20:31:00Z 2013-04-01T00:00:00Z 00580 JAVAD TRE_G3TH DELTA GPS+GLO 3.4.9 4 2013-05-22T21:02:00Z 2013-10-31T21:20:00Z 2013-05-22T00:00:00Z 00580 JAVAD TRE_G3TH DELTA GPS+GLO 3.4.12 4 2013-10-31T21:20:00Z 2014-04-10T19:44:00Z 2013-10-31T00:00:00Z 00580 JAVAD TRE_G3TH DELTA GPS+GLO 3.5.5 0 2014-04-10T19:45:00Z 2015-09-14T20:44:00Z 2014-04-10T00:00:00Z 02123 JAVAD TRE_3 DELTA GPS+GLO 3.6.3 0 2015-09-14T20:45:00Z 2018-09-27T00:00:00Z 2015-09-14T00:00:00Z 02702 JAVAD TRE_3 DELTA GPS+GLO+GAL+BDS 3.7.2 0 2018-09-28T11:15:00Z 2019-05-06T17:29:00Z 2018-09-28T00:00:00Z 02702 JAVAD TRE_3 DELTA GPS+GLO+GAL+BDS 3.7.6 0 2019-05-06T17:29:00Z 2020-04-03T20:09:00Z 2019-05-06T00:00:00Z 02702 JAVAD TRE_3 DELTA GPS+GLO+GAL+BDS+QZSS 3.7.9 0 2020-04-03T20:09:00Z 2020-09-02T23:59:00Z 2020-04-03T00:00:00Z 02704 JAVAD TRE_3 DELTA GPS+GLO+GAL+BDS+QZSS 3.7.9 0 2020-09-03T00:00:00Z 2021-01-29T01:00:00Z 2020-09-03T00:00:00Z 02704 JAVAD TRE_3 DELTA GPS+GLO+GAL+BDS 3.7.9 0 2021-01-29T01:00:00Z 2021-03-17T21:50:00Z 2021-01-29T00:00:00Z 02704 JAVAD TRE_3 DELTA GPS+GLO+GAL+BDS 4.0.02 0 2021-03-17T21:50:00Z 2021-07-22T17:39:00Z 2021-03-17T00:00:00Z 02704 JAVAD TRE_3 DELTA GPS+GLO+GAL+BDS 4.1.01 0 2021-07-22T17:39:00Z 2024-04-17T19:47:00Z 2021-07-22T00:00:00Z 02704 JAVAD TRE_3 DELTA GPS+GLO+GAL+BDS 4.3.00 0 2024-04-17T19:47:00Z 2025-08-19T14:54:00Z 2024-04-22T00:35:54Z 02704 JAVAD TRE_3 DELTA GPS+GLO+GAL+BDS 4.6.00 0 2025-08-19T14:54:00Z 2025-09-02T13:44:31Z 383-1029 TPSCR.G3 SCIS BPA 0.0083 0.0000 0.0000 0 SCIS 1239 LMR600 40 2012-01-14T00:00:00Z 2020-09-02T23:59:00Z 2012-01-14T00:00:00Z 02083 JAVRINGANT_DM SCIS BPA 0.0083 0.0000 0.0000 0 SCIS 1239 LMR600 40 2020-09-03T00:00:00Z 2020-09-03T00:00:00Z INTERNAL 2012-01-14 2013-05-01 2012-01-14T00:00:00Z EXTERNAL 5.0 2013-05-01 2019-01-21 2013-05-01T00:00:00Z INTERNAL 2019-01-22 2019-01-22 2019-01-22T00:00:00Z EXTERNAL H-MASER 5.0 2019-01-22 2020-07-08 2019-01-22T00:00:00Z EXTERNAL H-MASER 10.0 2020-07-08 2023-06-03 2020-07-08T00:00:00Z INTERNAL 2023-06-03 2023-06-28 2023-06-20T18:51:38Z EXTERNAL H-MASER 5.0 2023-06-28 2023-07-25T05:29:17Z SLR/VLBI/DORIS PERMANENT 2012-01-14 2012-01-14T00:00:00Z 2012-08-19 2012-08-19 Saw degradation in track for GODS. At this point GODS is running on internal clock with steering enabled. 2012-08-19T00:00:00Z 2012-08-23 2012-08-23 Dave reported that clock steering may be broken. 2012-08-23T00:00:00Z 2012-08-30 2012-08-30 Receiver firmware got updated and clock steering got set to off. Starting from 2012.243 JPL stopped seeing track degradation. 2012-08-30T00:00:00Z 2012-09-19 2012-09-19 GODS clock steering was temporarily set to tied to collect data for Javad tech analysis. It was then reverted back to no steering. This only lasted 15minutes. 2012-09-19T00:00:00Z 2012-09-20 2012-09-20 the r/R solution was implemented around 19:45 and testing began. GODS continued to be on internal clock with steering off. 2012-09-20T00:00:00Z 2012-09-28 2012-09-28 the javad.py running r/R solution was replaced with a javad.py running new clock steering commands to test possible clock steering fix. 2012-09-28T00:00:00Z 2012-09-29 2012-09-29 the javad.py running new clock steering commands was replaced with javad.py running r/R solution. At this point clock steering was not set to off and track degradation was introduced again. 2012-09-29T00:00:00Z 2012-10-01 2012-10-01 updated javad_gods.py to set clock steering off 2012-10-01T00:00:00Z 2012-12-21 2012-12-21 dropped the +C2 teqc option starting 23:00UTC. 2012-12-21T00:00:00Z JPL Point of Contact Jet Propulsion Laboratory +1 (818) 354-7055 4800 Oak Grove Drive Pasadena, CA 91109 USA ggnops@jpl.nasa.gov EarthScope Network Engineer Jet Propulsion Laboratory 4800 Oak Grove Drive Pasadena, CA 91109 USA ggn-ops@earthscope.org James Long NASA Goddard Space Flight Center 301-286-9836 Space Geodesy Branch, Code 926.9 8800 Greenbelt Road Greenbelt, MD 20771 USA james.l.long@nasa.gov Mike Perry NASA Goddard Space Flight Center 301-286-5300 Space Geodesy Branch, Code 926.9 8800 Greenbelt Road Greenbelt, MD 20771 USA michael.a.perry@nasa.gov JPL CDDIS TPSCR.G3 +-------+ / \ | | +-----------------+-------------+-----------------+ <-- 0.1015 TCR | | | | | | | | +-+-------------------------------------------------+-+ +-------------------+-------------+-------------------+ <-- 0.0345 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP <-- 0.2380 --> <-- 0.3800 --> 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. TODO GODS-20191024-E.jpg image 2019-10-24T11:06:05Z 2019-10-24T00:00:00Z GODS-20191024-N.jpg image 2019-10-24T11:32:06Z 2019-10-24T00:00:00Z GODS-20191024-W.jpg image 2019-10-24T11:03:50Z 2019-10-24T00:00:00Z GODS_20191024-S.jpg image 2019-10-24T11:33:14Z 2019-10-24T00:00:00Z