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MGS in Trouble, Formerly: MGS in safe mode
volcanopele
post Nov 10 2006, 04:05 PM
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QUOTE (djellison @ Nov 10 2006, 05:37 AM) *
"If the spacecraft does not receive commands from Earth for seven days in a row, it is programmed to stop whatever it is doing and try to transmit a signal to Earth using its high gain antenna. This could happen at about 0014 GMT on Friday (1614 PST on Thursday), so NASA will be listening for a signal from MGS's high gain antenna at that time."

http://space.jpl.nasa.gov/cgi-bin/wspace?t...=1&showsc=1

That would have been a Canberra pass.

Doug

AHHHHHHHHHHH!!!! So that what my problem is!!!


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djellison
post Nov 10 2006, 04:09 PM
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Oh boy.....and we thought Jason hated Mars before...... smile.gif

Doug
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ugordan
post Nov 10 2006, 04:10 PM
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Please don't tell me the Cassini periapsis data is being trashed for MGS contingency operations!


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djellison
post Nov 10 2006, 04:13 PM
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I'm sure somewhere someone's thinking "well - that makes us even for when Cassini took our DSN time when it had a problem"

smile.gif

Doug
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nprev
post Nov 10 2006, 04:15 PM
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So no news from the Canberra pass? sad.gif


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volcanopele
post Nov 10 2006, 04:23 PM
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QUOTE (ugordan @ Nov 10 2006, 09:10 AM) *
Please don't tell me the Cassini periapsis data is being trashed for MGS contingency operations!

I think so.


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Guest_Sunspot_*
post Nov 10 2006, 04:33 PM
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Maybe that's why there hasn't been any new images from Opportunity for about 48 hours too.
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djellison
post Nov 10 2006, 04:48 PM
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I'm not sure this should be impacting other Mars ops (it may be though...perhaps for AM DFE Uplinks?)

MRO has been busy getting uplinks from the ground :

CODE
0846955496:8 2006-306T17:24:38 ri2832 d:/seq/ssr_patch_load                    RELATV 59734C99
0846957409:8 2006-306T17:56:31 ri3294 d:/seq/d_seq_fs8477_pre_install          RELATV 76DA90B4
0846962269:8 2006-306T19:17:31 ri2010 d:/seq/cmic_install_c1a                  RELATV EDA73776
0846962834:8 2006-306T19:26:56 ri2011 d:/seq/cmic_install_c2a                  RELATV 794BDE45
0846963083:8 2006-306T19:31:05 ri3295 d:/seq/d_seq_fs8477_install              RELATV 20D3225E
0846963641:8 2006-306T19:40:23 ri2012 d:/seq/cmic_install_c1b                  RELATV 8D52E268
0846963800:8 2006-306T19:43:02 ri2833 d:/seq/ssr_patch_install                 RELATV 990A0299
0846964222:8 2006-306T19:50:04 ri2013 d:/seq/cmic_install_c2b                  RELATV F6F3EF04
0846965371:8 2006-306T20:09:13 ri3299 d:/seq/special_shr_tlm_start             RELATV 71EF60E0
0846968988:8 2006-306T21:09:30 ri3296 d:/seq/d_seq_fs8477_cleanup              RELATV C7D000A0
0846969171:8 2006-306T21:12:33 ri3196 d:/seq/ssr_patch_mod_checksum            RELATV  866AEFC
0847057977:8 2006-307T21:52:39 ri3452 d:/seq/mcs_scan_mer_relay                ABSLTE A111D834
0847058078:8 2006-307T21:54:20 ri2593 d:/seq/d_pat_fs7782_cleanup              RELATV C2EEE77F
0847313015:8 2006-310T20:43:17 ri3423 d:/seq/mcs_frz_mer_relay                 ABSLTE FFC5C6D9
0847396357:8 2006-311T19:52:19 ri3460 d:/seq/psp_itl_init_001_1a               RELATV FEEAA81F
0847402100:8 2006-311T21:28:02 ri3468 d:/seq/conjunct_deconfig                 RELATV DD892AFF
0847403060:8 2006-311T21:44:02 ri3466 d:/seq/marci_dma_checkout                RELATV 57DBBCCB
0847500901:8 2006-313T00:54:43 ri3414 d:/seq/flat_field_cal_desat              ABSLTE 671D3E49
0847501410:8 2006-313T01:03:12 ri3485 d:/seq/delete_hir_mods_lgo               RELATV CC601643
0847501619:8 2006-313T01:06:41 ri3484 d:/seq/mcs_flat_field_seq                ABSLTE 9E42E171


And infact - you can see a huge swathe of MGS uplinks just today...
CODE
  mi2142 94 STLGT1 2006-314T01:41:04.8 2006-314T01:41:44.7 Radiated
  mi1523 94 STRPAN 2006-314T01:41:56.0 2006-314T01:42:35.9 Radiated
  mi2142 94 STLGT1 2006-314T02:20:25.4 2006-314T02:21:05.3 Radiated
  mi1523 94 STRPAN 2006-314T02:21:20.4 2006-314T02:22:00.3 Radiated
  mi2132 94 STLGT2 2006-314T03:39:15.4 2006-314T03:39:55.3 Radiated
  mi1523 94 STRPAN 2006-314T03:40:14.1 2006-314T03:40:54.0 Radiated
  mi2132 94 STLGT2 2006-314T04:17:58.8 2006-314T04:18:38.8 Radiated
  mi1523 94 STRPAN 2006-314T04:18:52.4 2006-314T04:19:32.4 Radiated
  mi2142 94 STLGT1 2006-314T05:36:49.8 2006-314T05:37:29.8 Radiated
  mi1523 94 STRPAN 2006-314T05:37:45.5 2006-314T05:38:25.4 Radiated
  mi2142 94 STLGT1 2006-314T06:15:39.8 2006-314T06:16:19.7 Radiated
  mi1523 94 STRPAN 2006-314T06:16:38.4 2006-314T06:17:18.3 Radiated
  mi2123 94 SRSM2N 2006-314T08:15:22.4 2006-314T08:16:02.3 Radiated
  mi1523 94 STRPAN 2006-314T08:16:31.5 2006-314T08:17:11.4 Radiated
  mi2142 94 STLGT1 2006-314T09:32:33.4 2006-314T09:33:13.3 Radiated
  mi1523 94 STRPAN 2006-314T09:33:56.6 2006-314T09:34:36.5 Radiated
  mi2142 94 STLGT1 2006-314T10:14:28.4 2006-314T10:15:08.3 Radiated
  mi1523 94 STRPAN 2006-314T10:15:48.1 2006-314T10:16:28.1 Radiated
  mi2132 94 STLGT2 2006-314T11:29:04.4 2006-314T11:29:44.3 Radiated
  mi1523 94 STRPAN 2006-314T11:30:22.8 2006-314T11:31:02.7 Radiated
  mi2132 94 STLGT2 2006-314T12:09:26.4 2006-314T12:10:06.3 Radiated
  mi1523 94 STRPAN 2006-314T12:11:10.6 2006-314T12:11:50.5 Radiated
  mi2142 94 STLGT1 2006-314T13:27:16.4 2006-314T13:27:56.3 Radiated
  mi1523 94 STRPAN 2006-314T13:28:39.1 2006-314T13:29:19.0 Radiated
  mi2142 94 STLGT1 2006-314T14:06:55.4 2006-314T14:07:35.3 Radiated
  mi1523 94 STRPAN 2006-314T14:08:27.4 2006-314T14:09:07.3 Radiated
  mi2132 94 STLGT2 2006-314T15:25:51.4 2006-314T15:26:31.3 Radiated
  mi1523 94 STRPAN 2006-314T15:26:57.3 2006-314T15:27:37.3 Radiated

Mars Odyssey is also getting Uplink...

CODE
  cn2031 53        FILE_LOAD 2006-311T22:06:26.8 2006-311T22:06:28.1 Radiated
  cn2031 53        FILE_LOAD 2006-311T22:06:28.1 2006-311T22:06:29.5 Radiated
  cn2031 53        FILE_LOAD 2006-311T22:06:29.5 2006-311T22:06:30.8 Radiated
  cn2031 53        FILE_LOAD 2006-311T22:06:30.8 2006-311T22:06:32.1 Radiated
  cn2031 53        FILE_LOAD 2006-311T22:06:32.1 2006-311T22:06:33.4 Radiated
  cn2031 53        FILE_LOAD 2006-311T22:06:33.4 2006-311T22:06:34.7 Radiated
  cn2031 53        FILE_LOAD 2006-311T22:06:34.7 2006-311T22:06:36.0 Radiated
  cn2031 53        FILE_LOAD 2006-311T22:06:36.0 2006-311T22:06:36.3 Radiated
  cn2031 53        FILE_COPY 2006-311T22:06:36.6 2006-311T22:06:37.1 Radiated
  cn2031 53      FILE_DELETE 2006-311T22:06:37.1 2006-311T22:06:37.5 Radiated
  cn2031 53 THEMIS_FILE_LOAD 2006-311T22:06:37.5 2006-311T22:06:37.8 Radiated
  ce2632 53  FSW_OBJ_INITIAL 2006-312T09:07:04.6 2006-312T09:07:05.1 Radiated
  ce2632 53  FSW_OBJ_INITIAL 2006-312T15:40:39.2 2006-312T15:40:39.8 Radiated
  ce2629 53  FSW_OBJ_INITIAL 2006-312T18:44:48.6 2006-312T18:44:49.1 Radiated
  ce2632 53  FSW_OBJ_INITIAL 2006-312T19:33:54.6 2006-312T19:33:55.1 Radiated
  ce2634 53  FSW_OBJ_INITIAL 2006-312T22:31:37.8 2006-312T22:31:38.4 Radiated
  ce2632 53  FSW_OBJ_INITIAL 2006-313T07:46:20.5 2006-313T07:46:21.1 Radiated
  ce2632 53  FSW_OBJ_INITIAL 2006-314T13:47:52.5 2006-314T13:47:53.1 Radiated
  cn2032 53        FILE_LOAD 2006-314T13:54:31.2 2006-314T13:54:32.5 Radiated
  cn2032 53        FILE_LOAD 2006-314T13:54:32.5 2006-314T13:54:33.8 Radiated
  cn2032 53        FILE_LOAD 2006-314T13:54:33.8 2006-314T13:54:35.1 Radiated
  cn2032 53        FILE_LOAD 2006-314T13:54:35.1 2006-314T13:54:36.4 Radiated
  cn2032 53        FILE_LOAD 2006-314T13:54:36.4 2006-314T13:54:37.7 Radiated
  cn2032 53        FILE_LOAD 2006-314T13:54:37.7 2006-314T13:54:39.1 Radiated
  cn2032 53        FILE_LOAD 2006-314T13:54:39.1 2006-314T13:54:40.4 Radiated
  cn2032 53        FILE_LOAD 2006-314T13:54:40.4 2006-314T13:54:41.6 Radiated
  cn2032 53        FILE_COPY 2006-314T13:54:41.9 2006-314T13:54:42.4 Radiated
  cn2032 53      FILE_DELETE 2006-314T13:54:42.4 2006-314T13:54:42.8 Radiated


Today is 2006-314 (currently 16:48)

Several uplinks have been sent to MGS..I've found what they are by googling around a little
STLGT1 : Swith to Low Gain Antenna 1 for Transmit.
STRPAN : Turn TWTA beam on
STLGT2 : Switch to LGA 2 for Transmit.

The fact that they cycle through them again and again is perhaps suggestive that they're not getting anything sensible back?


Doug
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ugordan
post Nov 10 2006, 04:57 PM
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QUOTE (volcanopele @ Nov 10 2006, 05:23 PM) *
I think so.

!%$R#%&$%/% !!!!!
Any possibility to stop Cassini from overwriting them and replay them later?


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volcanopele
post Nov 10 2006, 05:25 PM
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QUOTE (ugordan @ Nov 10 2006, 09:57 AM) *
!%$R#%&$%/% !!!!!
Any possibility to stop Cassini from overwriting them and replay them later?

Yes. biggrin.gif biggrin.gif biggrin.gif biggrin.gif

All is well. Though still, giant laser...MGS...


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Guest_Analyst_*
post Nov 10 2006, 05:33 PM
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If I remember correctly they can communicate with more than one spacecraft at Mars using the same DSN dish because the antenna beam covers the whole Mars disk and beyond.

As for Cassini: It is a normal procedure that a spacecraft emergency gets priority over normal (Cassini) operations. The same about primary vs. extended missions and manned vs. unmanned missions. It's the way it should be. If they have exhausted their options, MGS is declared lost, not before.

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nprev
post Nov 10 2006, 05:36 PM
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QUOTE (volcanopele @ Nov 10 2006, 09:25 AM) *
Yes. biggrin.gif biggrin.gif biggrin.gif biggrin.gif

All is well. Though still, giant laser...MGS...


Funny you should mention lasers, VP...perhaps the cancellation of the Mars Telecommunications Orbiter should be reconsidered. Lasercomm would be independent of the DSN, and free up resources.

(Yeah, I knew what you meant, though...bad planetary scientist, bad!) laugh.gif


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ugordan
post Nov 10 2006, 05:41 PM
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QUOTE (djellison @ Nov 10 2006, 05:13 PM) *
I'm sure somewhere someone's thinking "well - that makes us even for when Cassini took our DSN time when it had a problem"

Touche! smile.gif

QUOTE (Analyst @ Nov 10 2006, 06:33 PM) *
It is a normal procedure that a spacecraft emergency gets priority over normal (Cassini) operations. The same about primary vs. extended missions and manned vs. unmanned missions. It's the way it should be. If they have exhausted their options, MGS is declared lost, not before.

Oh, I'm perfectly aware of that and I'm not bitchslapping the DSN network for choosing recovery over data playback. It's just that it seemed to happen after a more interesting periapsis pass for Cassini that I find an unlucky coincidence.

Unlucky coincidences are what I hate. mad.gif


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volcanopele
post Nov 10 2006, 05:50 PM
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yeah, there are contingency plans (woohoo for that). And I hope MGS is recovered, sooner rather than later. I guess it just annoying, that's all.


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djellison
post Nov 10 2006, 07:58 PM
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CODE
  mi2128 94 SRSWTB 2006-314T17:31:14.4 2006-314T17:31:54.3 Radiated
  mi2128 94 SRSWTB 2006-314T18:12:24.0 2006-314T18:13:03.9 Radiated


SRSWTB - no idea what that is but it's something different than the rest of the day. Twice within 42 minutes...perhaps they're trying to schedule repeated commands at times when predicts would put LGA's at a more optimal position.

Doug
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