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 1998/107." END_OBJECT = TEXT END 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 106-107 DSS 65 pass ends at 18:30 DSS 42 pass begins at 02:00 Ingress occultation: 23:41 to 23:59 Egress occultation and gravity: 00:16 to 00:55 It requires extra manual set up at the station to use the DSP at DSS 42. If MGS is using 42, the conflicts must be fairly severe in this time period. ... -Trish ------------------------------------------------------------------- From pmeshe@mail1.jpl.nasa.gov Fri Apr 17 05:35:57 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 FAA03111 for ; Fri, 17 Apr 1998 05:35:57 -0700 (PDT) Received: from [128.149.43.45] by eis-msg-002.jpl.nasa.gov (Netscape Mail Server v2.02) with ESMTP id AAA20913; Fri, 17 Apr 1998 05:35:53 -0700 Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: Asmar , balmino@pontos.cnes.fr, pesposit@mail1.jpl.nasa.gov, flemoine@olympus.gsfc.nasa.GOV, Patricia Priest , rsimpson@magellan.stanford.edu, William.L.Sjogren@jpl.nasa.gov, dsmith@ltpsun.gsfc.nasa.gov, len@nova.Stanford.EDU, Dah-Ning.Yuan@jpl.nasa.gov, zuber@tharsis.gsfc.nasa.gov From: pmeshe@mail1.jpl.nasa.gov (Paula M Eshe) Subject: Periapsis #245 Gravity Date: Fri, 17 Apr 1998 05:35:53 -0700 Content-Length: 427 Status: R Hello This periapsis occurred at DSS 65. 107/12:00:59 Exit occultation, spacecraft on LGA,NADIR pointed 107/12:02:10 DSS 65 in lock 107/12:08:48 Periapsis 245 107/12:23:55 End of NADIR, begin rollout 107/12:33:55 Spacecraft slew to Earth point 107/12:45:46 Switch back to HGA Current products being used: SPK: spk_i_980414_OD240_268_V1 SOE: p239b.02.soe The next periapsis occurs at 4:48 PM PDT Friday at DSS 15. Paula ----------------------------------------------------------------- From pmeshe@mail1.jpl.nasa.gov Fri Apr 17 05:37:22 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 FAA03122; Fri, 17 Apr 1998 05:37:21 -0700 (PDT) Received: from [128.149.43.45] by eis-msg-002.jpl.nasa.gov (Netscape Mail Server v2.02) with ESMTP id AAA21096; Fri, 17 Apr 1998 05:37:18 -0700 Message-Id: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: Asmar , Jen Caetta , Patricia Priest , Salvatore Abbate , hinson@nimbus.Stanford.EDU, rsimpson@magellan.stanford.edu, stoumpis@magellan.stanford.edu, joe@neptune.Stanford.EDU, len@nova.Stanford.EDU From: pmeshe@mail1.jpl.nasa.gov (Paula M Eshe) Subject: Occultation #141 Orbit #244 Date: Fri, 17 Apr 1998 05:37:18 -0700 Content-Length: 553 Status: O Hello Everything went well with Occultation #141 at DSS 65. Record Times: 107/11:21:00 to 107/11:38:00 One-Way Times: 107/11:21:31 to 107/11:37:44 Expected Surface: 107/11:32:39 SNT: 29.13 SOE: p239b.02.soe SPK: spk_i_980414_OD240_268_V1 Script: 98107.65.a244.scr No attenuation changes. Egress (LGA, Carrier-only): Record Times: 107/11:55:00 to 107/12:34:00 Expected Egress: 107/12:00:59 Periapsis: 107/12:08:48 No attenuation changes. No script for egress. Next Occultation occurs at 4:11 PM PDT Friday at DSS 15. Have a nice weekend Paula -------------------------------------------------------------------- From trish@rodan.jpl.nasa.gov Fri Apr 17 17:42:09 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 RAA09188; Fri, 17 Apr 1998 17:42:08 -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 RAA15603; Fri, 17 Apr 1998 17:42:05 -0700 (PDT) Message-Id: <199804180042.RAA15603@rodan.Jpl.Nasa.Gov> Date: 17 Apr 98 17:45:55 -0700 From: Trish Priest Subject: Occultation #142 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: 792 Status: RO Hello, The occultation went well at DSS 15. We are back to the normal configuration for data delivery as of occultation #141. Ingress: Record Times: 107-23:01:00 to 107-23:18:00 One-way Times: 107-23:01:27 to 107-23:17:41 Expected Surface Begin: 107-23:12:37 Start of slew off-Earth (ISH): 107-23:13:25 SNT: 29.53 SPK: spk_i_980417_OD245_274_V1 SOE: p239b.03.soe Script: 98107.15.a245.scr There were no attenuation changes. Egress (LGA, carrier-only): Record Times: 107-23:35:00 to 108-00:14:00 Expected egress: 107-23:40:30 Periapsis: 107-23:48:21 No attenuation changes. No script was used. There is a coverage gap for tomorrow morning's occultation. The next occultation for which we will be collecting data occurs at 3:31 PM PDT Saturday at DSS 15. -Trish --------------------------------------------------------------- From trish@rodan.jpl.nasa.gov Fri Apr 17 17:47:39 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 RAA09205 for ; Fri, 17 Apr 1998 17:47:38 -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 RAA15621; Fri, 17 Apr 1998 17:47:21 -0700 (PDT) Message-Id: <199804180047.RAA15621@rodan.Jpl.Nasa.Gov> Date: 17 Apr 98 17:51:11 -0700 From: Trish Priest Subject: Periapsis 246 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: 600 Status: RO Hello, This periapsis occurred at DSS 15. 107-23:40:30 Exit occultation, spacecraft on LGA, NADIR pointed 107-23:41:00 Approximate receiver in-lock time 107-23:48:21 Periapsis 242 108-00:03:27 End of NADIR, begin rollout 108-00:13:27 Spacecraft slew to Earth point 108-00:25:18 Approximate receiver out-of-lock time 108-00:25:18 Switch back to HGA Current products being used: SPK: spk_i_980417_OD245_274_V1 SOE: p239b.03.soe There is a coverage gap during the next periapsis. The next periapsis for which we will collect data occurs at 4:07 PM PDT Saturday over DSS 15. -Trish ------------------------------------------------------------------------ From joe@nova.Stanford.EDU Thu May 7 10:43:27 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 KAA27835 for ; Thu, 7 May 1998 10:43:27 -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 KAA18489; Thu, 7 May 1998 10:43:25 -0700 (PDT) Received: (from joe@localhost) by neptune.Stanford.EDU (8.8.5/8.8.3) id KAA07959; Thu, 7 May 1998 10:37:50 -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: <199805071731.KAA27687@magellan.Stanford.EDU> Date: Thu, 07 May 1998 10:37:50 -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/81271727 Content-Length: 320 Status: RO This was the ingress ODR with 181 missing records. Fortunately, they appear to occur well after the surface occultation. The egress ODR could not even be steered due to very low signal level. On 07-May-98 Joe Twicken 723-3597 wrote: > 81071121.ODR p 65XRXIR1R201 65XRXIC1XX01 65XR1IF1S101 65XR1IS1T101 > 81071155.ODR f ------------------------------------------------------------------------------------------ From joe@nova.Stanford.EDU Thu May 7 11:35:54 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 LAA01203 for ; Thu, 7 May 1998 11:35:53 -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 LAA27412; Thu, 7 May 1998 11:35:53 -0700 (PDT) Received: (from joe@localhost) by neptune.Stanford.EDU (8.8.5/8.8.3) id LAA08001; Thu, 7 May 1998 11:30:18 -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 Date: Thu, 07 May 1998 11:30:18 -0700 (PDT) Sender: joe@neptune.Stanford.EDU From: Joe Twicken To: hinson@nova.Stanford.EDU, rsimpson@nova.Stanford.EDU Subject: Frequency harmonics at DSS 65 Content-Length: 403 Status: RO It appears that there were problems with a complete spectrum full of frequency harmonics during the ingress occultations #139 and #141 at DSS 65. In the first case, there is a very well defined set of harmonics with what looks to be 20 Hz spacing. In the second case, the harmonics are not as well defined. In both cases, however, the spurs can even be seen pretty clearly in the PREPLOOK spectra. Joe ----------------------------------------------------------------------------------------------- From joe@nova.Stanford.EDU Mon May 11 12:33:53 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 MAA29077 for ; Mon, 11 May 1998 12:33:52 -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 MAA24656; Mon, 11 May 1998 12:33:51 -0700 (PDT) Received: (from joe@localhost) by neptune.Stanford.EDU (8.8.5/8.8.3) id MAA10227; Mon, 11 May 1998 12:28:12 -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 Date: Mon, 11 May 1998 12:28:12 -0700 (PDT) Sender: joe@neptune.Stanford.EDU From: Joe Twicken To: hinson@nova.Stanford.EDU, rsimpson@nova.Stanford.EDU, len@nova.Stanford.EDU, trish@zygra.jpl.nasa.gov Subject: USO Allan Deviation Content-Length: 1255 Status: RO I have estimated the USO Allan deviation for one ODR in each of the three weeks before the spacecraft started to slew away from Earth prior to the ingress surface occultation. I used Goddard trajectory files (GDN) to steer the open-loop data. The stability was not good, and deteriorated from week to week. I assume that this performance is due to the ever-decreasing Sun-Earth-Mars angle. I don't believe that Dave has retrieved profiles from the last two ODR's (or the others acquired during the same time period). 98/091 98/098 98/107 t, sec AD AD AD 0.4096 2.4999e-12 2.9111e-12 5.3263e-12 1.6384 1.0234e-12 1.6103e-12 2.8661e-12 3.2768 7.1372e-13 1.2055e-12 2.4422e-12 6.5536 4.9012e-13 1.0047e-12 2.1737e-12 26.2144 3.4480e-13 7.8407e-13 1.2867e-12 The 98/091 ODR was acquired during occultation #109 at DSS 34; SNR was 47 dB/Hz. The 98/098 ODR was acquired during occultation #122 at DSS 34; SNR was also 47 dB/Hz. The 98/107 ODR was acquired during occultation #142 at DSS 15; SNR was 50 dB/Hz. Joe