PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2007-07-27 NOTE = " E-mail and other messages concerning MGS Radio Science on or about 1998/104." END_OBJECT = TEXT END From "/dd.ccMail=David J Recce at JPL-B507/"@cc2mhb.jpl.nasa.gov Thu Apr 2 05:42:39 1998 Received: from eis-msg-012.jpl.nasa.gov (eis-msg-012.jpl.nasa.gov [137.78.18.32]) by magellan.Stanford.EDU (8.8.5/8.8.3) with ESMTP id FAA22885 for ; Thu, 2 Apr 1998 05:42:39 -0800 (PST) Received: from jpl-mhs.jpl.nasa.gov by eis-msg-012.jpl.nasa.gov (X.400 to RFC822 Gateway); Thu, 2 Apr 1998 05:42:37 -0800 X400-Received: by mta Proteus in /c=us/admd=telemail/prmd=nasa/; Relayed; 02 Apr 1998 05:42:36 -0800 X400-Received: by /c=us/admd=telemail/prmd=nasa/; Relayed; 02 Apr 1998 05:42:36 -0800 X400-MTS-Identifier: [/c=us/admd=telemail/prmd=nasa/; 0440B352395CC018-Proteus] Content-Identifier: 0440B352395CC018 Content-Return: Allowed X400-Content-Type: P2-1988 ( 22 ) Conversion: Allowed Original-Encoded-Information-Types: IA5-Text Priority: normal Disclose-Recipients: Prohibited Alternate-Recipient: Allowed X400-Originator: "/dd.ccMail=David J Recce at JPL-B507/"@cc2mhb.jpl.nasa.gov X400-Recipients: non-disclosure; Message-Id: <"0440B352395CC018*/c=us/admd=telemail/prmd=nasa/o=jpl/ou=ccmail/dd.ccMail=David J Recce at JPL-B507/"@MHS> Date: 02 Apr 1998 05:42:36 -0800 From: David J Recce <"/dd.ccMail=David J Recce at JPL-B507/"@cc2mhb.jpl.nasa.gov> To: dsmith@tharsis.gsfc.nasa.gov (IPM Return requested), len@nova.Stanford.EDU (IPM Return requested), zuber@tharsis.gsfc.nasa.gov (IPM Return requested), Patricia Priest (IPM Return requested), William L Sjogren (IPM Return requested) cc: rsimpson@magellan.stanford.edu (IPM Return requested), Tom.E.Thorpe@jpl.nasa.gov (IPM Return requested), Joseph G Beerer (IPM Return requested) Subject: Re[2]: Two orbits MIME-Version: 1.0 Content-Length: 1125 Status: R Trish/Dave, Thanks for your help, I appreciate it. Regards, Dave _______________________ Reply Separator _______________________ Subject: Re: Two orbits Author: dsmith@tharsis.gsfc.nasa.gov at Internet Date: 4/2/98 4:44 AM Trish: This is acceptable provided it stays at these 2 passes. If it gets to be more we need to take a look another at it. Dave At 4:02 AM -0800 4/2/98, Trish Priest wrote: >Hello, > >During two of the "hightened awareness" passes for the targetting of >Cydonia, the NOPE would prefer that we do not collect gravity data. >When we collect gravity data, we ask the station to disable the >telemetry predicts in order to lock on to the LGA signal. The NOPE >would prefer that we not do this before the targetting playbacks. > >This effects orbits 220 and 239. During the third Cydonia opportunity, >the periapsis station and the playback station are different, so we can >disable telemetry predicts without any possible affect to the playback. > >Please let me know if this is unacceptable. If I don't hear from you, I >will agree to give up gravity during these two orbits. > >-Trish -------------------------------------------------------------------- From trish@rodan.jpl.nasa.gov Wed Apr 8 13:40:45 1998 Received: from rodan.Jpl.Nasa.Gov (rodan.jpl.nasa.gov [128.149.43.24]) by magellan.Stanford.EDU (8.8.5/8.8.3) with ESMTP id NAA12348 for ; Wed, 8 Apr 1998 13:40:44 -0700 (PDT) Received: from 128.149.43.27 (trish-mac.jpl.nasa.gov [128.149.43.27]) by rodan.Jpl.Nasa.Gov (8.8.5/8.6.6) with SMTP id NAA14859; Wed, 8 Apr 1998 13:39:28 -0700 (PDT) Message-Id: <199804082039.NAA14859@rodan.Jpl.Nasa.Gov> Date: 08 Apr 98 13:42:53 -0700 From: Trish Priest Subject: DSN gaps next week To: Georges Balmino , David Hinson , Frank Lemoine , Richard Simpson , Bill Sjogren , David Smith , Len Tyler , Maria Zuber CC: Bill Adams , Sami Asmar , Paula Eshe , Angus McMechen X-Mailer: QuickMail Pro 1.0.2d1 X-Priority: 3 Reply-To: Trish Priest Content-Type: text/plain; charset="iso-8859-1" Content-Length: 796 Status: RO Hello, There are three DSN coverage gaps next week. I have submitted a request to the DSN scheduler to see if any or all of the gaps can filled. A summary of the gaps is below. DOY 104 DSS 63 pass ends at 12:30. DSS 15 pass begins at 14:15. Ingress occultation: 13:26 to 13:43 Egress occultation and gravity: 14:03 to 14:42 ... -Trish ---------------------------------------------------------- From trish@rodan.jpl.nasa.gov Mon Apr 13 20:56:19 1998 Received: from rodan.Jpl.Nasa.Gov (rodan.jpl.nasa.gov [128.149.43.24]) by magellan.Stanford.EDU (8.8.5/8.8.3) with ESMTP id UAA26917; Mon, 13 Apr 1998 20:56:18 -0700 (PDT) Received: from 128.149.43.27 (trish-mac.jpl.nasa.gov [128.149.43.27]) by rodan.Jpl.Nasa.Gov (8.8.5/8.6.6) with SMTP id UAA01525; Mon, 13 Apr 1998 20:56:16 -0700 (PDT) Message-Id: <199804140356.UAA01525@rodan.Jpl.Nasa.Gov> Date: 13 Apr 98 20:59:56 -0700 From: Trish Priest Subject: Occultation #134 To: Salvadore Abbate , Sami Asmar , Jennifer Caetta , Paula Eshe , Randy Herrera , David Hinson , Richard Simpson , Stavros Toumpis , Joe Twicken , Len Tyler X-Mailer: QuickMail Pro 1.0.2d1 X-Priority: 3 Reply-To: Trish Priest Content-Type: text/plain; charset="iso-8859-1" Content-Length: 787 Status: R Hello, The occultation went well at DSS 45. Ingress and egress have been retransmitted. Sal found a way to accomplish the same lower CPU loading without having to use tapes. Ingress: Record Times: 104-01:47:00 to 104-02:04:00 One-way Times: 104-01:47:51 to 104-02:03:58 Expected Surface Begin: 104-01:58:55 SNT: 29.77 SPK: spk_i_980412_OD236_264_V1 SOE: p235c.01.soe Script: 98104.45.a237.scr There were no attenuation changes. Egress (LGA, carrier-only): Record Times: 104-02:25:00 to 104-02:43:00 Expected egress: 104-02:30:12 Periapsis: 104-02:38:02 No attenuation changes. No script was used. The next occultation occurs during a DSN tracking gap. The next occultation for which we will collect data occurs at 6:15 PM PDT Tuesday at DSS 45. -Trish ------------------------------------------------------------- From trish@rodan.jpl.nasa.gov Mon Apr 13 21:02:22 1998 Received: from rodan.Jpl.Nasa.Gov (rodan.jpl.nasa.gov [128.149.43.24]) by magellan.Stanford.EDU (8.8.5/8.8.3) with ESMTP id VAA27010 for ; Mon, 13 Apr 1998 21:02:22 -0700 (PDT) Received: from 128.149.43.27 (trish-mac.jpl.nasa.gov [128.149.43.27]) by rodan.Jpl.Nasa.Gov (8.8.5/8.6.6) with SMTP id VAA01538; Mon, 13 Apr 1998 21:02:18 -0700 (PDT) Message-Id: <199804140402.VAA01538@rodan.Jpl.Nasa.Gov> Date: 13 Apr 98 21:05:57 -0700 From: Trish Priest Subject: Periapsis 238 Gravity To: Sami Asmar , Georges Balmino , Paula Eshe , Pat Esposito , Frank Lemoine , Richard Simpson , Bill Sjogren , David Smith , Len Tyler , "Dah-Ning Yuan" , Maria Zuber X-Mailer: QuickMail Pro 1.0.2d1 X-Priority: 3 Reply-To: Trish Priest Content-Type: text/plain; charset="iso-8859-1" Content-Length: 578 Hello, This periapsis occurred at DSS 45. 104-02:30:12 Exit occultation, spacecraft on LGA, NADIR pointed 104-02:31:00 Approximate receiver in lock time 104-02:38:02 Periapsis 238 104-02:53:07 End of NADIR, begin rollout 104-03:03:07 Spacecraft slew to Earth point 104-03:14:58 Receiver out of lock 104-03:14:58 Switch back to HGA Current products being used: SPK: spk_i_980412_OD236_264_V1 SOE: p235c.01.soe The next periapsis occurs during a DSN tracking gap. The next data collection will be for periapsis 240 at 6:54 PM PDT Tuesday over DSS 45. -Trish -------------------------------------------------------------- From trish@rodan.jpl.nasa.gov Tue Apr 14 12:43:29 1998 Received: from rodan.Jpl.Nasa.Gov (rodan.jpl.nasa.gov [128.149.43.24]) by magellan.Stanford.EDU (8.8.5/8.8.3) with ESMTP id MAA05652 for ; Tue, 14 Apr 1998 12:43:28 -0700 (PDT) Received: from 128.149.43.27 (trish-mac.jpl.nasa.gov [128.149.43.27]) by rodan.Jpl.Nasa.Gov (8.8.5/8.6.6) with SMTP id MAA04309 for ; Tue, 14 Apr 1998 12:43:21 -0700 (PDT) Message-Id: <199804141943.MAA04309@rodan.Jpl.Nasa.Gov> Date: 14 Apr 98 12:47:02 -0700 From: Trish Priest Subject: RE: Occ #134e etc. To: "Dick Simpson 723-3525" CC: Paula Eshe X-Mailer: QuickMail Pro 1.0.2d1 X-Priority: 3 Reply-To: Trish Priest Content-Type: text/plain; charset="iso-8859-1" Content-Length: 1487 Status: RO Hello, Dick, Paula looked at the log. I recorded the correct time period, and I retransmitted the right time period. There seems to be enough time to retransmit egress again before tonight's occultation. I will do that, and I will also try to determine the cause. If I don't see anything on our side, I will submit an ISA. -Trish Dick Simpson 723-3525 wrote: > >We queried for 02:25:00-02:43:00 on the egress occultation, but only got >02:35:32-02:43:00 -- and missed the occultation. I can try again; but, >since the query was run this morning (8 AM PDT), I'm not optimistic we'll >find anything more. Trish said she had done a "retransmission" already; >but I wonder whether we might try again. > >The data from #134i look very good - one of the best occultations I've >seen. And we got everything from the query. > >I'm looking at the 6 dB question for SPC 60, on the assumption that WE >may be doing something wrong here. So far, I've not found anything very >helpful. There is definitely a difference between 60 and the others. >Charitably, the difference may be only 2 dB; but that's only if you make >every assumption in favor of 60. One thing that IS different is the >filters; the 2000 Hz filters at 10 and 40 are very flat, while there's >several dB of ripple at 60. My charitable assumptions above were based >on using favorable combinations of peaks and lows in the filter. But >the carrier usually sits about halfway between the peaks and lows. ----------------------------------------------------------------------------- From joe@nova.Stanford.EDU Wed May 6 12:16:22 1998 Received: from nova.stanford.edu (nova.Stanford.EDU [36.10.0.123]) by magellan.Stanford.EDU (8.8.5/8.8.3) with ESMTP id MAA07650 for ; Wed, 6 May 1998 12:16:21 -0700 (PDT) Received: from neptune.Stanford.EDU (neptune.Stanford.EDU [36.10.0.149]) by nova.stanford.edu (8.8.8/8.8.4) with ESMTP id MAA16627; Wed, 6 May 1998 12:16:22 -0700 (PDT) Received: (from joe@localhost) by neptune.Stanford.EDU (8.8.5/8.8.3) id MAA07377; Wed, 6 May 1998 12:10:48 -0700 (PDT) Message-ID: X-Mailer: XFMail 1.2 [p0] on Solaris X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <199805061910.MAA07488@magellan.Stanford.EDU> Date: Wed, 06 May 1998 12:10:48 -0700 (PDT) Sender: joe@neptune.Stanford.EDU From: Joe Twicken To: stoumpis@leland.stanford.edu, joe@nova.Stanford.EDU, rsimpson@nova.Stanford.EDU, hinson@nova.Stanford.EDU Subject: RE: ODR Notice: /users/z15/procODR/81261904 Content-Length: 298 Status: R The trajectory (8103107A.GDN) does not appear to be as good as the trajectories for the other (ingress) occultations. On 06-May-98 Joe Twicken 723-3597 wrote: > 81040148.ODR p 45XRXIR1R201 45XRXIC1XX01 45XR1IF1S101 45XR1IS1T101 > 81040225.ODR p 45XRXER1R201 45XRXEC1XX01 45XR1EF1S101 45XR1ES1T101 ----------------------------------------------------------------------------- From gene.goltz@jpl.nasa.gov Mon Nov 30 13:08:07 1998 Received: from eis-msg-002.jpl.nasa.gov (eis-msg-002.jpl.nasa.gov [137.78.160.158]) by magellan.Stanford.EDU (8.8.5/8.8.3) with ESMTP id NAA06700 for ; Mon, 30 Nov 1998 13:08:06 -0800 (PST) Received: from gene-pc ([137.78.177.113]) by eis-msg-002.jpl.nasa.gov (Netscape Mail Server v2.02) with SMTP id AAA15746; Mon, 30 Nov 1998 13:07:58 -0800 Message-Id: <3.0.32.19981130130721.00927400@pop.jpl.nasa.gov> X-Sender: ggoltz@pop.jpl.nasa.gov X-Mailer: Windows Eudora Pro Version 3.0 (32) Date: Mon, 30 Nov 1998 13:07:21 +0000 To: Frank Lemoine , rsimpson@magellan.stanford.edu From: Gene Goltz Subject: Re: orbit-file problem Cc: Patricia.Priest@jpl.nasa.gov, dpavlis@geodesy2.gsfc.nasa.gov, dave@usgrant.gsfc.nasa.gov, dsmith@tharsis.gsfc.nasa.gov, Asmar , R G Herrera Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Length: 8257 Status: RO Frank, Following is a summary of the Mars Global Surveyor "raw" data during the period you have a question about. What I see is that the spacecraft was in 2-way mode during several periods on April 14 (DOY 104) and April 15 (DOY 105): 45-X 2 DOP 98104:031849-062804 11356 11356 15-X 2 DOP 98104:151648-180618 10171 10171 15-X 2 DOP 98104:202619-004533 15555 14260 45-X 2 DOP 98105:023526-054444 11359 11359 65-X 2 DOP 98105:080549-125134 17146 17146 65-X 2 DOP 98105:141352-170437 10246 10246 15-X 2 DOP 98105:194412-002430 16819 16819 You should, therefore, have received that 2-way data on your Orbit Data Files. On the assumption that you did not get this 2-way data, I've generated an ODF (at 10-per-second Doppler compression) and placed it onto OSCAR2, in directory NST.SC94, file name 98104R105.DAT in hopes that this will fix any problems you are encountering. Please let me know if this is sufficient. Gene Goltz 818 393-1142 ------------------------------------------------------------------------------ ATDF ("raw" data): XMTR SUMMARY 45 1998:104:023824-104:054739 X D/L = 104:031849-104:062804 15 1998:104:143500-104:172554 X D/L = 104:151525-104:180619 15 1998:104:194554-105:002503 X D/L = 104:202626-105:010535 45 1998:105:015501-105:050419 X D/L = 105:023533-105:054451 65 1998:105:072423-105:121109 X D/L = 105:080455-105:125141 65 1998:105:133327-105:164011 X D/L = 105:141359-105:172043 15 1998:105:190238-105:234400 X D/L = 105:194310-106:002432 PASS SUMMARY 94 45-X 3 DOP* 98103:230400-013031 2964 2964 25-X 94 45-X 3 RNG* 98103:230400-013031 1 1 25-X 94 45-X 1 DOP 98104:013032-031848 6497 6491 94 45-X 2 DOP 98104:031849-062804 11356 11356 00 94 45-X 2 RNG 98104:031849-062804 52 52 00 94 63-X 1 DOP 98104:033045-123625 14953 14947 94 63-X 1 RNG 98104:033045-123625 1 1 94 45-X 1 DOP 98104:062805-070641 2317 2317 94 45-X 1 RNG 98104:062805-070641 2 2 94 15-X 1 DOP 98104:124748-151647 4609 4609 94 15-X 1 RNG 98104:124748-151647 1 1 94 15-X 2 DOP 98104:151648-180618 10171 10171 15-X 94 15-X 2 RNG 98104:151648-180618 47 47 15-X 94 15-X 1 DOP 98104:180619-202618 8400 8383 94 15-X 1 RNG 98104:180619-202618 40 40 94 15-X 2 DOP 98104:202619-004533 15555 14260 00 94 15-X 2 RNG 98104:202619-004533 73 73 00 94 25-X 3 DOP* 98104:220810-001830 7729 7723 15-X 94 25-X 3 RNG* 98104:220810-001830 1 1 15-X 94 45-X 3 DOP* 98104:234544-010528 3283 3283 15-X 94 45-X 3 RNG* 98104:234544-010528 1 1 15-X 94 45-X 1 DOP 98105:010529-023525 5397 5397 94 45-X 1 RNG 98105:010529-023525 24 24 94 45-X 2 DOP 98105:023526-054444 11359 11359 00 94 45-X 2 RNG 98105:023526-054444 41 41 00 94 65-X 3 DOP 98105:053508-053846 219 219 45-X 94 65-X 1 RNG 98105:053846-053846 1 1 94 65-X 3 DOP 98105:053847-054444 358 358 45-X 94 45-X 1 DOP 98105:054445-055831 827 827 94 45-X 1 RNG 98105:054445-055831 3 3 94 65-X 1 DOP 98105:054445-080548 8464 8464 94 65-X 2 DOP 98105:080549-125134 17146 17146 65-X 94 65-X 2 RNG 98105:080549-125134 66 66 65-X 94 65-X 1 DOP 98105:125135-141351 4937 4937 94 65-X 1 RNG 98105:125135-141351 1 1 94 65-X 2 DOP 98105:141352-170437 10246 10246 00 94 65-X 2 RNG 98105:141352-170437 35 35 00 94 15-X 3 DOP* 98105:155747-172040 4213 4213 65-X 94 15-X 3 RNG* 98105:155747-172040 1 1 65-X 94 15-X 1 DOP 98105:172041-194411 8611 8605 94 15-X 1 RNG 98105:172041-194411 40 40 94 15-X 2 DOP 98105:194412-002430 16819 16819 15-X 94 15-X 2 RNG 98105:194412-002430 80 80 15-X ------------------------------------------------------------------------------ ODF (processed/delivered data): DATA SUMMARY RECORDS DSS = 25X 98:103:17:25:01 98:103:18:35:11 F3 DOPLR 422 DSS = 25X 98:103:18:35:34 98:103:18:49:34 F2 DOPLR 85 DSS = 25X 98:103:18:50:44 98:103:21:10:10 F1 DOPLR 78 DSS = 25X 98:103:21:12:07 98:104:00:50:47 F2 DOPLR 1313 DSS = 25X 98:103:21:12:07 98:104:00:50:47 F2 RANGE 1 DSS = 45X 98:104:00:42:55 98:104:01:30:19 F3 DOPLR 284 DSS = 45X 98:104:01:30:37 98:104:03:18:39 F1 DOPLR 426 DSS = 45X 98:104:03:18:54 98:104:06:27:54 F2 DOPLR 1124 DSS = 45X 98:104:03:18:54 98:104:06:27:54 F2 RANGE 52 DSS = 45X 98:104:06:30:55 98:104:06:38:45 F1 DOPLR 48 DSS = 63X 98:104:08:45:25 98:104:12:30:38 F1 DOPLR 1351 DSS = 15X 98:104:14:10:22 98:104:15:15:59 F1 DOPLR 354 DSS = 15X 98:104:15:19:10 98:104:18:06:10 F2 DOPLR 1003 DSS = 15X 98:104:15:19:10 98:104:18:06:10 F2 RANGE 47 DSS = 15X 98:104:18:06:24 98:104:18:06:24 F1 DOPLR 1 DSS = 15X 98:104:20:26:42 98:105:00:45:21 F2 DOPLR 1411 DSS = 15X 98:104:20:26:42 98:105:00:45:21 F2 RANGE 67 DSS = 25X 98:104:22:08:15 98:105:00:17:19 F3 DOPLR 773 DSS = 45X 98:105:00:10:51 98:105:01:05:11 F3 DOPLR 327 DSS = 45X 98:105:01:06:15 98:105:02:35:20 F1 DOPLR 342 DSS = 45X 98:105:02:35:41 98:105:05:44:30 F2 DOPLR 1122 DSS = 45X 98:105:02:35:41 98:105:05:44:30 F2 RANGE 41 DSS = 65X 98:105:05:35:13 98:105:05:42:13 F3 DOPLR 43 ****************************************************************************** At 07:51 PM 11/23/98 UTC, Frank Lemoine wrote: >Gene: > >I've detected an anomaly and would appreciate your help in tracking down >its cause. > >My processing of the orbit data files (ODF's) for Mars Global Surveyor >between 980414 06:30 to 980415 01:00 reveals that only one-way data were present. >This is not logical, as periapsis 239 (which occurs at roughly 980415 14:30) >did not have DSN tracking (according to the MGS Radio Science status >reports we received from Trish Priest). > >I am trying to ascertain whether it is the orbit files that are at fault >in that time frame, or whether our preprocessor is off course. > >In that time period, the catalog lists data from stations 45, 63 >15, all one-way which should not be. During this phase we were getting >one-way data only in the vicinity of periapsis, the period over >which valid one-way data was obtained is ... for the periods around >the time gap listed above: > > >Periapsis exit occultation/on LGA switch back to HGA station >238 1998-04-14-02:30:12 1998-04-14-03:14:58 45 >239 Periapsis occurs during a DSN tracking gap >240 1998-04-15-01:46:51 1998-04-15-02:31:35 45 > >The issue is that this lack of data introduces what is probably an >artificial 18 hour gap in the tracking coverage, and >so consequently our orbits degrade over this time frame. > >Is it possible to look into what type of data was obtained in the >time period from 980414 06:30 to 980415 01:00, and regenerate the orbit files >for this gap? Please let me know what is feasible. > >Thanks, > >Best regards, > >Frank Lemoine >MOLA/POD >NASA GSFC >