PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2007-07-29 NOTE = " E-mail and other messages concerning MGS Radio Science on or about 2000/066." END_OBJECT = TEXT END From trish@rodan.jpl.nasa.gov Wed Feb 9 15:19 PST 2000 Received: from godzilla.jpl.nasa.gov (godzilla.jpl.nasa.gov [137.78.177.120]) by magellan.stanford.edu (8.9.3/8.9.3) with ESMTP id PAA19306 for ; Wed, 9 Feb 2000 15:19:55 -0800 (PST) Received: from 137.78.177.117 (trish-mac.jpl.nasa.gov [137.78.177.117]) by godzilla.jpl.nasa.gov (8.9.3/8.9.3) with SMTP id PAA24550; Wed, 9 Feb 2000 15:20:20 -0800 (PST) Message-Id: <200002092320.PAA24550@godzilla.jpl.nasa.gov> Date: 09 Feb 00 15:21:11 -0800 From: Trish Priest Subject: Beta-Supplement and Fixed HGA To: Salvadore Abbate , Georges Balmino , Pat Esposito , David Hinson , Alexander Konopliv , Frank Lemoine , Richard Simpson , Bill Sjogren , David Smith , Tim Smith , Joe Twicken , Len Tyler , "Dah-Ning Yuan" , Maria Zuber CC: Sami Asmar X-Mailer: QuickMail Pro 1.5.4 (Mac) X-Priority: 3 Reply-To: Trish Priest MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="US-Ascii" Content-Length: 1103 Status: R Hello, As you probably know, the beta-supplement mode of operations began during the Madrid pass on Monday morning (038/09:55:00 UTC ERT, orbit 4105). This has two main implications for Radio Science: (1) we will not be able to acquire egress measurements during beta-supplement mode, and (2) there will be approximately 16 minutes of tracking data outage during each orbit while the HGA rewinds. In order to obtain some egress measurements, there will be four to eight days per month of fixed-HGA operations. During these periods, the spacecraft will be NADIR pointed for 12 orbits (no downlink) followed by 4 orbits with the HGA fixed and Earth-pointed (no NADIR observations). The fixed-HGA mode is very similar to the previous fixed-HGA periods which occurred both before Mapping and right after the HGA AZ gimbal anomaly. The fixed-HGA periods for March are as follows (in UTC ERT): 066/03:35 to 066/11:35 067/11:35 to 067/19:35 068/19:35 to 069/03:35 075/11:30 to 075/19:30 076/19:30 to 077/03:30 077/03:30 to 078/11:30 I will keep you informed of future fixed-HGA periods. -Trish -------------------------------------------------------------------------- From trish@rodan.jpl.nasa.gov Mon Feb 28 14:11 PST 2000 Received: from godzilla.jpl.nasa.gov (godzilla.jpl.nasa.gov [137.78.177.120]) by magellan.stanford.edu (8.9.3/8.9.3) with ESMTP id OAA26561 for ; Mon, 28 Feb 2000 14:11:09 -0800 (PST) Received: from 137.78.177.117 (trish-mac.jpl.nasa.gov [137.78.177.117]) by godzilla.jpl.nasa.gov (8.9.3/8.9.3) with SMTP id OAA04665 for ; Mon, 28 Feb 2000 14:12:09 -0800 (PST) Message-Id: <200002282212.OAA04665@godzilla.jpl.nasa.gov> Date: 28 Feb 00 14:13:23 -0800 From: Trish Priest Subject: Uplink sweep To: Richard Simpson X-Mailer: QuickMail Pro 1.5.4 (Mac) X-Priority: 3 Reply-To: Trish Priest MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="US-Ascii" Content-Length: 207 Status: RO Hello, Dick, For the fixed-HGA periods, they want to go into two-way as soon as possible. The uplink sweep could start up to 3 minutes earlier than it had been. Have you been seeing it at all? -Trish -------------------------------------------------------------------------- From trish@rodan.jpl.nasa.gov Tue Feb 29 09:31 PST 2000 Received: from godzilla.jpl.nasa.gov (godzilla.jpl.nasa.gov [137.78.177.120]) by magellan.stanford.edu (8.9.3/8.9.3) with ESMTP id JAA16480 for ; Tue, 29 Feb 2000 09:31:46 -0800 (PST) Received: from 137.78.177.117 (trish-mac.jpl.nasa.gov [137.78.177.117]) by godzilla.jpl.nasa.gov (8.9.3/8.9.3) with SMTP id JAA22544; Tue, 29 Feb 2000 09:32:45 -0800 (PST) Message-Id: <200002291732.JAA22544@godzilla.jpl.nasa.gov> Date: 29 Feb 00 09:33:59 -0800 From: Trish Priest Subject: Fixed HGA Implementation To: Len Tyler CC: David Hinson , Richard Simpson X-Mailer: QuickMail Pro 1.5.4 (Mac) X-Priority: 3 Reply-To: Trish Priest MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="US-Ascii" Content-Length: 856 Status: RO Hello, Len, When the spacecraft team looked closely at the implementation of the fixed-HGA periods, the other instruments (not RS) end up losing more data than initially expected. This can be rectified by adding DSN coverage in the right places, but coverage has already been allocated for the first few months of beta and fixed-HGA. Belinda is attempting to fill in the appropriate gaps. However, MOC (especially) is concerned that the data loss is more than expected. The MCR for fixed-HGA expressly states that there are to be four days per month with a goal of eight days per month, so we should be fine. I just wanted to let you know that MOC is concerned. The topic may be discussed at next week's Mission Planning meeting. I will let you know. FYI, so far, most of the fixed-HGA periods are implemented as two sets of three days. -Trish -------------------------------------------------------------------------- From rsimpson Sun Mar 5 09:27 PST 2000 Received: (from rsimpson@localhost) by magellan.stanford.edu (8.9.3/8.9.3) id JAA20645; Sun, 5 Mar 2000 09:27:47 -0800 (PST) Date: Sun, 5 Mar 2000 09:27:47 -0800 (PST) From: Dick Simpson 723-3525 Message-Id: <200003051727.JAA20645@magellan.stanford.edu> To: flemoine@ares.gsfc.nasa.gov, rsimpson Subject: Tracking Cc: trish@rodan.jpl.nasa.gov Content-Type: text Content-Length: 567 Frank: In case you need it in the future, you might note that we are in te midst of a period of thin MGS tracking coverage. Between DSS 25 end of track 2000/065T03:35:00 and DSS 25 begin track 2000/066T01:35:00, there is no coverage Between DSS 65 end of track 2000/066T13:35:00 and DSS 54 begin track 2000/067T11:35:00, there is no coverage. Between DSS 25 end of track 2000/067T19:35:00 and DSS 15 begin track 2000/068T17:35:00 there is no coverage. Coverage is then quite good for the next week, then there are a couple gaps of 22 nd 24 hrs. Dick -------------------------------------------------------------------------- From ppriest@airmail.fltops.jpl.nasa.gov Sun Mar 5 21:18 PST 2000 Received: from thorn.fltops.jpl.nasa.gov (thorn.fltops.jpl.nasa.gov [137.228.90.10]) by magellan.stanford.edu (8.9.3/8.9.3) with SMTP id VAA21266; Sun, 5 Mar 2000 21:18:58 -0800 (PST) Received: by thorn.fltops.jpl.nasa.gov; id VAA17888; Sun, 5 Mar 2000 21:20:05 -0800 Received: from airmail.fltops.jpl.nasa.gov(137.228.96.12) by thorn.fltops.jpl.nasa.gov via smap (V4.2) id xma017815; Sun, 5 Mar 00 21:20:03 -0800 Received: from mmrs.fltops.jpl.nasa.gov (mmrs.fltops.jpl.nasa.gov [137.228.136.10]) by airmail.fltops.jpl.nasa.gov (8.9.3+Sun/8.9.3) with ESMTP id VAA20490; Sun, 5 Mar 2000 21:20:03 -0800 (PST) Received: (from ppriest@localhost) by mmrs.fltops.jpl.nasa.gov (8.8.8+Sun/8.8.8) id FAA11404; Mon, 6 Mar 2000 05:20:02 GMT Date: Mon, 6 Mar 2000 05:20:02 GMT From: Patricia Priest Message-Id: <200003060520.FAA11404@mmrs.fltops.jpl.nasa.gov> DSS: 25 Apparently-To: Apparently-To: Content-Type: text Content-Length: 140 Status: RO Orbit: 4444e SOE: mm018a.07.tsoe Begin Record: 066/02:48:00 End Record: 066/02:57:00 Last Attenuation Change: SNT: Elevation Angle: -------------------------------------------------------------------------- From rsimpson Sun Mar 5 22:04 PST 2000 Received: (from rsimpson@localhost) by magellan.stanford.edu (8.9.3/8.9.3) id WAA21356; Sun, 5 Mar 2000 22:04:46 -0800 (PST) Date: Sun, 5 Mar 2000 22:04:46 -0800 (PST) From: Dick Simpson 723-3525 Message-Id: <200003060604.WAA21356@magellan.stanford.edu> To: flemoine@ares.gsfc.nasa.gov, rsimpson, trish@rodan.jpl.nasa.gov Subject: DSN Coverage Content-Type: text Content-Length: 238 If I'd been thinking a little more about the big picture when I sent you the list of tracking gaps in the next couple weeks, I would have remembered this is when we do Fixed HGA Mapping. So there was a very good reason for these gaps. -------------------------------------------------------------------------- From ppriest@airmail.fltops.jpl.nasa.gov Mon Mar 6 00:59 PST 2000 Received: from thorn.fltops.jpl.nasa.gov (thorn.fltops.jpl.nasa.gov [137.228.90.10]) by magellan.stanford.edu (8.9.3/8.9.3) with SMTP id AAA21431; Mon, 6 Mar 2000 00:59:45 -0800 (PST) Received: by thorn.fltops.jpl.nasa.gov; id BAA09298; Mon, 6 Mar 2000 01:00:52 -0800 Received: from airmail.fltops.jpl.nasa.gov(137.228.96.12) by thorn.fltops.jpl.nasa.gov via smap (V4.2) id xma009206; Mon, 6 Mar 00 01:00:12 -0800 Received: from mmrs.fltops.jpl.nasa.gov (mmrs.fltops.jpl.nasa.gov [137.228.136.10]) by airmail.fltops.jpl.nasa.gov (8.9.3+Sun/8.9.3) with ESMTP id BAA23142; Mon, 6 Mar 2000 01:00:12 -0800 (PST) Received: (from ppriest@localhost) by mmrs.fltops.jpl.nasa.gov (8.8.8+Sun/8.8.8) id JAA11635; Mon, 6 Mar 2000 09:00:11 GMT Date: Mon, 6 Mar 2000 09:00:11 GMT From: Patricia Priest Message-Id: <200003060900.JAA11635@mmrs.fltops.jpl.nasa.gov> DSS: 45 Apparently-To: Apparently-To: Content-Type: text Content-Length: 826 Status: R Orbit: 4444i SOE: mm018a.07.tsoe Begin Record: 066/04:05:00 End Record: 066/04:13:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 4445e SOE: mm018a.07.tsoe Begin Record: 066/04:46:00 End Record: 066/04:55:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 4445i SOE: mm018a.07.tsoe Begin Record: 066/06:02:00 End Record: 066/06:11:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 4446e SOE: mm018a.07.tsoe Begin Record: 066/06:44:00 End Record: 066/06:52:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 4446i SOE: mm018a.07.tsoe Begin Record: 066/08:00:00 End Record: 066/08:08:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 4447e SOE: mm018a.07.tsoe Begin Record: 066/08:41:00 End Record: 066/08:50:00 Last Attenuation Change: SNT: Elevation Angle: -------------------------------------------------------------------------- From Patricia.Priest@jpl.nasa.gov Mon Mar 6 02:04 PST 2000 Received: from godzilla.jpl.nasa.gov (godzilla.jpl.nasa.gov [137.78.177.120]) by magellan.stanford.edu (8.9.3/8.9.3) with ESMTP id CAA21466 for ; Mon, 6 Mar 2000 02:04:48 -0800 (PST) Received: from rodan.jpl.nasa.gov (rodan [137.78.177.110]) by godzilla.jpl.nasa.gov (8.9.3/8.9.3) with ESMTP id CAA01515 for ; Mon, 6 Mar 2000 02:05:55 -0800 (PST) Received: from 137.78.201.111 (jpl-remote-111.jpl.nasa.gov [137.78.201.111]) by rodan.jpl.nasa.gov (8.9.3/8.9.3) with SMTP id CAA14664 for ; Mon, 6 Mar 2000 02:05:53 -0800 (PST) Message-Id: <200003061005.CAA14664@rodan.jpl.nasa.gov> Date: 06 Mar 00 02:08:08 -0800 From: Trish Priest Subject: First Fixed HGA To: Richard Simpson X-Mailer: QuickMail Pro 1.5.4 (Mac) X-Priority: 3 Reply-To: Trish Priest MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="US-Ascii" Content-Length: 499 Status: R Hello, Dick, The first fixed-HGA period went okay from the egress perspective. The first egress at DSS25 seemed to be okay although a few error messages came up about 02:53. All measurements at DSS 45 went well. The final ingress measurement (at DSS 65) was lost. The remote operations server software could not sync with the DSP. This is usually the result of a DSP problem. Gravity data from the fixed-HGA period should be good quality. I did not hear of any station problems. -Trish -------------------------------------------------------------------------- From ppriest@airmail.fltops.jpl.nasa.gov Mon Mar 6 02:29 PST 2000 Received: from thorn.fltops.jpl.nasa.gov (thorn.fltops.jpl.nasa.gov [137.228.90.10]) by magellan.stanford.edu (8.9.3/8.9.3) with SMTP id CAA21482; Mon, 6 Mar 2000 02:29:10 -0800 (PST) Received: by thorn.fltops.jpl.nasa.gov; id CAA18402; Mon, 6 Mar 2000 02:30:17 -0800 Received: from airmail.fltops.jpl.nasa.gov(137.228.96.12) by thorn.fltops.jpl.nasa.gov via smap (V4.2) id xma018304; Mon, 6 Mar 00 02:30:10 -0800 Received: from mmrs.fltops.jpl.nasa.gov (mmrs.fltops.jpl.nasa.gov [137.228.136.10]) by airmail.fltops.jpl.nasa.gov (8.9.3+Sun/8.9.3) with ESMTP id CAA24141; Mon, 6 Mar 2000 02:30:10 -0800 (PST) Received: (from ppriest@localhost) by mmrs.fltops.jpl.nasa.gov (8.8.8+Sun/8.8.8) id KAA11729; Mon, 6 Mar 2000 10:30:10 GMT Date: Mon, 6 Mar 2000 10:30:10 GMT From: Patricia Priest Message-Id: <200003061030.KAA11729@mmrs.fltops.jpl.nasa.gov> DSS: 65 Apparently-To: Apparently-To: Content-Type: text Content-Length: 141 Status: R Orbit: 4447i SOE: mm018a.07.tsoe Begin Record: 066/09:58:00 End Record: 066/10:06:00 Last Attenuation Change: SNT: Elevation Angle: -------------------------------------------------------------------------- From trish@rodan.jpl.nasa.gov Mon Mar 6 15:03 PST 2000 Received: from godzilla.jpl.nasa.gov (godzilla.jpl.nasa.gov [137.78.177.120]) by magellan.stanford.edu (8.9.3/8.9.3) with ESMTP id PAA15189 for ; Mon, 6 Mar 2000 15:03:03 -0800 (PST) Received: from 137.78.177.117 (trish-mac.jpl.nasa.gov [137.78.177.117]) by godzilla.jpl.nasa.gov (8.9.3/8.9.3) with SMTP id PAA14305; Mon, 6 Mar 2000 15:04:08 -0800 (PST) Message-Id: <200003062304.PAA14305@godzilla.jpl.nasa.gov> Date: 06 Mar 00 15:05:31 -0800 From: Trish Priest Subject: Re: momentum dumps To: Frank Lemoine , "Dick Simpson 723-3525" X-Mailer: QuickMail Pro 1.5.4 (Mac) X-Priority: 3 Reply-To: Trish Priest MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="US-Ascii" Content-Length: 674 Status: R Reply to: Re: momentum dumps Good points. The first tracking for fixed-HGA began at 01:35 UTC on 066 (March 6). -Trish Dick Simpson 723-3525 wrote: >>Looks like momentum dumps are less frequent in FHGA mode .... >>than in regular mapping? We are down to about two mom. dumps/day >>vs typicaly 4-5X per day. Is that correct? > > I don't know whether the momentum dump rate is correct. We > have no data more recent than 2000-03-03. FHGA didn't start > until 2000-03-05 (at the earliest), so I wouldn't read too > much into the figures you have. The fact that you have only > 2 momentum dumps in 2000-03-04 certainly can't be attributed > to FHGA. -------------------------------------------------------------------------- From joe@neptune.stanford.edu Tue Apr 11 11:52 PDT 2000 Received: from nova.Stanford.EDU (nova [171.64.90.123]) by magellan.stanford.edu (8.9.3/8.9.3) with ESMTP id LAA00757 for ; Tue, 11 Apr 2000 11:52:13 -0700 (PDT) Received: from neptune.Stanford.EDU (neptune.Stanford.EDU [171.64.90.149]) by nova.Stanford.EDU (8.9.3/8.9.3) with ESMTP id LAA19541; Tue, 11 Apr 2000 11:52:31 -0700 (PDT) Received: (from joe@localhost) by neptune.Stanford.EDU (8.9.3/8.9.3) id LAA03045; Tue, 11 Apr 2000 11:48:47 -0700 (PDT) Message-ID: X-Mailer: XFMail 1.2 [p0] on Solaris X-Priority: 3 (Normal) Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <200004111810.LAA27959@magellan.stanford.edu> Date: Tue, 11 Apr 2000 11:48:47 -0700 (PDT) Sender: joe@neptune.stanford.edu From: Joe Twicken To: hinson@nova.stanford.edu, rsimpson@nova.stanford.edu, joe@nova.stanford.edu Subject: RE: ODR Notice: /users/z19/procODR/01021754 Content-Type: text/plain; charset=us-ascii Content-Length: 1125 Status: RO (1) The 00660248.ODR recording has the sawtooth problem (2) There was no HGA motion compensation for these recordings (3) Except for the sawtooth, the data look very good. There are no 5 Hz spurs in these recordings On 11-Apr-00 Joe Twicken 723-3597 wrote: > 00660248.ODR p 25XRXER1R201 25XRXEC1XX01 25XR1EF1S101 25XR1ES1T101 > 25XR1ES1T201 25XR1ES1T301 25XR1ES1T401 25XR1ES1T501 > 00660405.ODR p 45XRXIR1R201 45XRXIC1XX01 45XR1IF1S101 45XR1IS1T101 > 45XR1IS1T201 45XR1IS1T301 45XR1IS1T401 45XR1IS1T501 > 00660446.ODR p 45XRXER1R201 45XRXEC1XX01 45XR1EF1S101 45XR1ES1T101 > 45XR1ES1T201 45XR1ES1T301 45XR1ES1T401 45XR1ES1T501 > 00660602.ODR p 45XRXIR1R201 45XRXIC1XX01 45XR1IF1S101 45XR1IS1T101 > 45XR1IS1T201 45XR1IS1T301 45XR1IS1T401 45XR1IS1T501 > 00660644.ODR p 45XRXER1R201 45XRXEC1XX01 45XR1EF1S101 45XR1ES1T101 > 45XR1ES1T201 45XR1ES1T301 45XR1ES1T401 45XR1ES1T501 > 00660800.ODR p 45XRXIR1R201 45XRXIC1XX01 45XR1IF1S101 45XR1IS1T101 > 45XR1IS1T201 45XR1IS1T301 45XR1IS1T401 45XR1IS1T501 > 00660841.ODR p 45XRXER1R201 45XRXEC1XX01 45XR1EF1S101 45XR1ES1T101 > 45XR1ES1T201 45XR1ES1T301 45XR1ES1T401 45XR1ES1T501 -------------------------------------------------------------------------- From joe@neptune.stanford.edu Thu Sep 20 15:16 PDT 2001 Received: from neptune.Stanford.EDU (neptune [171.64.90.149]) by magellan.stanford.edu (8.9.3/8.9.3) with ESMTP id PAA19513 for ; Thu, 20 Sep 2001 15:16:50 -0700 (PDT) Received: (from joe@localhost) by neptune.Stanford.EDU (8.9.3/8.9.3) id PAA16734; Thu, 20 Sep 2001 15:13:49 -0700 (PDT) Message-ID: X-Mailer: XFMail 1.2 [p0] on Solaris X-Priority: 3 (Normal) Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <200109202121.OAA14167@magellan.stanford.edu> Date: Thu, 20 Sep 2001 15:13:49 -0700 (PDT) Sender: joe@neptune.stanford.edu From: Joe Twicken To: joe@nova.stanford.edu, rsimpson@magellan.stanford.edu, hinson@nova.stanford.edu Subject: RE: ODR Notice: /users/z19/procODR/12632105 Content-Type: text/plain; charset=us-ascii Content-Length: 936 Status: RO (1) Reprocessed with Goddard (ql15) trajectory. The orbits look pretty good on this date (2) There was no HGA motion compensation for these recordings On 20-Sep-01 Joe Twicken 723-3597 wrote: > 00660405.ODR p 45XRXIR1R202 45XRXIC1XX02 45XR1IF1S102 45XR1IS1T102 > 45XR1IS1T202 45XR1IS1T302 45XR1IS1T402 45XR1IS1T502 > 00660446.ODR p 45XRXER1R202 45XRXEC1XX02 45XR1EF1S102 45XR1ES1T102 > 45XR1ES1T202 45XR1ES1T302 45XR1ES1T402 45XR1ES1T502 > 00660602.ODR p 45XRXIR1R202 45XRXIC1XX02 45XR1IF1S102 45XR1IS1T102 > 45XR1IS1T202 45XR1IS1T302 45XR1IS1T402 45XR1IS1T502 > 00660644.ODR p 45XRXER1R202 45XRXEC1XX02 45XR1EF1S102 45XR1ES1T102 > 45XR1ES1T202 45XR1ES1T302 45XR1ES1T402 45XR1ES1T502 > 00660800.ODR p 45XRXIR1R202 45XRXIC1XX02 45XR1IF1S102 45XR1IS1T102 > 45XR1IS1T202 45XR1IS1T302 45XR1IS1T402 45XR1IS1T502 > 00660841.ODR p 45XRXER1R202 45XRXEC1XX02 45XR1EF1S102 45XR1ES1T102 > 45XR1ES1T202 45XR1ES1T302 45XR1ES1T402 45XR1ES1T502