PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM DATA_SET_ID = "MEX-M-MRS-1/2/3-EXT2-1463-V1.0" STANDARD_DATA_PRODUCT_ID = ENB PRODUCER_ID = "SUE" PRODUCT_ID = "M00SUE0L1A_ENB_080830020_01.TXT" PRODUCT_CREATION_TIME = 2011-04-20T16:42:13.000 INSTRUMENT_HOST_ID = "MEX" OBJECT = TEXT PUBLICATION_DATE = 2008-05-09 NOTE = "MEX SUE Experimenter Notes" END_OBJECT = TEXT END From sami.asmar@jpl.nasa.gov Mon Mar 17 20:39:57 2008 Return-Path: Received: from nmta3.jpl.nasa.gov (nmta3.jpl.nasa.gov [137.78.160.108]) by magellan.stanford.edu (8.11.7p3+Sun/8.11.7) with ESMTP id m2I3dvC22962 for ; Mon, 17 Mar 2008 20:39:57 -0700 (PDT) Received: from xmta3.jpl.nasa.gov (xmta3.jpl.nasa.gov [137.78.160.111]) by nmta3.jpl.nasa.gov (Switch-3.2.6/Switch-3.2.6) with ESMTP id m2I3dvbs010209; Mon, 17 Mar 2008 20:39:57 -0700 Received: from mprox3.jpl.nasa.gov (mprox3.jpl.nasa.gov [137.78.160.171]) by xmta3.jpl.nasa.gov (Switch-3.2.6/Switch-3.2.6) with ESMTP id m2I3dt42032410; Mon, 17 Mar 2008 20:39:55 -0700 Received: from [172.16.1.36] (vpn-149-242-042.jpl.nasa.gov [128.149.242.42]) by mprox3.jpl.nasa.gov (Switch-3.2.6/Switch-3.2.6) with ESMTP id m2I3drTe001894 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT); Mon, 17 Mar 2008 20:39:54 -0700 In-Reply-To: <200803180104.m2I14rH22789@magellan.stanford.edu> References: <200803180104.m2I14rH22789@magellan.stanford.edu> Mime-Version: 1.0 (Apple Message framework v753) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: <592927D8-7FEE-4E7A-97A8-06BD013EA550@jpl.nasa.gov> Cc: daniel.s.kahan@jpl.nasa.gov, gene.goltz@jpl.nasa.gov Content-Transfer-Encoding: 7bit From: Sami Asmar Subject: Re: Visitor Pass for MEX BSR Date: Mon, 17 Mar 2008 20:39:47 -0700 To: Dick Simpson 650-723-3525 X-Mailer: Apple Mail (2.753) X-Source-IP: vpn-149-242-042.jpl.nasa.gov [128.149.242.42] X-Source-Sender: sami.asmar@jpl.nasa.gov X-AUTH: Authorized Content-Length: 249 Status: RO Done. On Mar 17, 2008, at 6:04 PM, Dick Simpson 650-723-3525 wrote: > > Sami: > > Can you arrange a visitor's pass for me Saturday 22 March? > We have a MEX bistatic radar that runs from 4:10 PM to 10:10 PM > (PDT) at DSS 14. Thanks. > > Dick From rsimpson Sun Mar 23 12:13:06 2008 Return-Path: Received: (from rsimpson@localhost) by magellan.stanford.edu (8.11.7p3+Sun/8.11.7) id m2NJD3322162; Sun, 23 Mar 2008 12:13:03 -0700 (PDT) Date: Sun, 23 Mar 2008 12:13:03 -0700 (PDT) From: Dick Simpson 650-723-3525 Message-Id: <200803231913.m2NJD3322162@magellan.stanford.edu> To: Daniel.S.Kahan@jpl.nasa.gov, H.J.Walker@rl.ac.uk, JKlose@jftl.jpl.nasa.gov, JValencia@jftl.jpl.nasa.gov, JVelasco@jftl.jpl.nasa.gov, John.Reynolds@esa.int, Matthias.Hahn@uni-koeln.de, Michel.Denis@esa.int, Olivier.Reboud@esa.int, Sophia.M.No@jpl.nasa.gov, art.freiley@jpl.nasa.gov, audenrie@geo.uni-koeln.de, bernd.haeusler@unibw-muenchen.de, carone@geo.uni-koeln.de, christina.stanzel@uni-koeln.de, dfrew@rssd.esa.int, dhinson@stanford.edu, dwight.holmes@jpl.nasa.gov, fred.jansen@esa.int, gene.goltz@jpl.nasa.gov, jim.volp@sciops.esa.int, john.c.klose@jpl.nasa.gov, kuertent@uni-koeln.de, len.tyler@stanford.edu, mexmps@esa.int, mpaetzol@uni-koeln.de, rsimpson, sami.asmar@jpl.nasa.gov, thomas.w.thompson@jpl.nasa.gov, tzegers@rssd.esa.int, walter@geo.uni-koeln.de Subject: MEX BSR 2008/083 Content-Length: 1099 Status: R MEX Bistatic Radar Planners/Supporters: The MEX bistatic radar experiment last night (local time) (2008/083 UTC) appears to have been successful. Surface echoes were visible in real-time on all four receiver channels throughout the hour. The X-Band echoes approached 40 dB/Hz at times, which should make them excellent candidates for science analysis. System temperature of the S-LCP low-noise amplifier may have been as high as 100K (rather than the expected 25K), meaning sensitivity on that channel will be reduced. The NOPE is investigating to see whether there is a maintenance issue. The azimuth brake unexpectedly came on several times during the measurements causing a total signal loss of about 3 minutes while we were observing the surface. The brake was also on during most of the second mini-calibration; but that should have little effect on the science. Deficiency Report G108446 was opened by the DSN. A more thorough report will be possible when the data have been transferred from Goldstone to JPL and then to Stanford - perhaps later this week. Dick Simpson From Daniel.S.Kahan@jpl.nasa.gov Mon Mar 24 17:33:58 2008 Return-Path: Received: from nmta1.jpl.nasa.gov (nmta1.jpl.nasa.gov [137.78.160.214]) by magellan.stanford.edu (8.11.7p3+Sun/8.11.7) with ESMTP id m2P0XvC29829 for ; Mon, 24 Mar 2008 17:33:57 -0700 (PDT) Received: from xmta2.jpl.nasa.gov (xmta2.jpl.nasa.gov [137.78.160.56]) by nmta1.jpl.nasa.gov (Switch-3.2.6/Switch-3.2.6) with ESMTP id m2P0XuSV011033; Mon, 24 Mar 2008 17:33:57 -0700 Received: from [127.0.0.1] (pc04160143905.jpl.nasa.gov [137.78.78.85]) by xmta2.jpl.nasa.gov (Switch-3.2.6/Switch-3.2.6) with ESMTP id m2P0XtDw031668; Mon, 24 Mar 2008 17:33:55 -0700 Message-ID: <47E84873.6050909@jpl.nasa.gov> Date: Mon, 24 Mar 2008 17:33:55 -0700 From: Danny Kahan User-Agent: Thunderbird 2.0.0.12 (Windows/20080213) MIME-Version: 1.0 To: Dick Simpson 650-723-3525 CC: Gene Goltz Subject: MEX 2008/082 Bi-Static Radar Data References: <68d3c63934.6393468d3c@jpl.nasa.gov> <479E3D48.7020700@jpl.nasa.gov> <47A7721E.50807@jpl.nasa.gov> <20080227091037.i795tbr00skko8wc@webmail.jpl.nasa.gov> <47CEEBC1.6030204@jpl.nasa.gov> In-Reply-To: <47CEEBC1.6030204@jpl.nasa.gov> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Source-IP: pc04160143905.jpl.nasa.gov [137.78.78.85] X-Source-Sender: Daniel.S.Kahan@jpl.nasa.gov X-AUTH: Authorized Content-Length: 1276 Status: RO Dick, MEX Bi-Static Radar RSR open-loop data from 2008/082 at DSS-14 (pass 1758) have been played back to the TDS as follows: - X-band, RCP, 1-way - RSR2B3 - 25 kHz, 16 bits - start = 00:20:00 - stop = 01:05:00 - start = 01:22:59 - stop = 04:30:00 - SFDUs = 55,692 and: - S-band, RCP, 1-way - RSR2A3 - 25 kHz, 16 bits - start = 00:20:00 - stop = 01:05:00 - start = 01:22:59 - stop = 04:30:00 - SFDUs = 55,692 and: - X-band, LCP, 1-way - RSR1B3 - 25 kHz, 16 bits - start = 00:20:00 - stop = 01:05:00 - start = 01:22:59 - stop = 04:30:00 - SFDUs = 55,692 and: - S-band, LCP, 1-way - RSR1A3 - 25 kHz, 16 bits - start = 00:20:00 - stop = 01:05:00 - start = 01:22:59 - stop = 04:30:00 - SFDUs = 55,692 and: - X-band, RCP, 1-way - RSR2B4 - 100 kHz, 16 bits - start = 02:08:00 - stop = 03:09:59 - SFDUs = 74,400 and: - S-band, RCP, 1-way - RSR2A4 - 100 kHz, 16 bits - start = 02:08:00 - stop = 03:09:59 - SFDUs = 74,400 and: - X-band, LCP, 1-way - RSR1B4 - 100 kHz, 16 bits - start = 02:08:00 - stop = 03:09:59 - SFDUs = 74,400 and: - S-band, LCP, 1-way - RSR1A4 - 100 kHz, 16 bits - start = 02:08:00 - stop = 03:09:59 - SFDUs = 74,400 These data should now be available for you to query. Regards, Danny From Arthur.J.Freiley@jpl.nasa.gov Tue Mar 25 14:41:11 2008 Return-Path: Received: from nmta1.jpl.nasa.gov (nmta1.jpl.nasa.gov [137.78.160.214]) by magellan.stanford.edu (8.11.7p3+Sun/8.11.7) with ESMTP id m2PLfBC25631 for ; Tue, 25 Mar 2008 14:41:11 -0700 (PDT) Received: from xmta2.jpl.nasa.gov (xmta2.jpl.nasa.gov [137.78.160.56]) by nmta1.jpl.nasa.gov (Switch-3.2.6/Switch-3.2.6) with ESMTP id m2PLfAIR021859 for ; Tue, 25 Mar 2008 14:41:10 -0700 Received: from freiley-xp.jpl.nasa.gov (pc08009171656.jpl.nasa.gov [128.149.76.99]) by xmta2.jpl.nasa.gov (Switch-3.2.6/Switch-3.2.6) with ESMTP id m2PLf8MY025605 for ; Tue, 25 Mar 2008 14:41:08 -0700 Message-Id: <6.2.3.4.2.20080325142834.02d91d48@mail1.jpl.nasa.gov> X-Mailer: QUALCOMM Windows Eudora Version 6.2.3.4 Date: Tue, 25 Mar 2008 14:41:08 -0700 To: Dick Simpson 650-723-3525 From: Arthur J Freiley Subject: Re: MEX DSN Bistatic Radar Data In-Reply-To: <200803251907.m2PJ7u924320@magellan.stanford.edu> References: <200803251907.m2PJ7u924320@magellan.stanford.edu> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Source-IP: pc08009171656.jpl.nasa.gov [128.149.76.99] X-Source-Sender: Arthur.J.Freiley@jpl.nasa.gov X-AUTH: Authorized Content-Length: 4426 Status: RO Dick, I am interested in the apparent high system noise temperature and how it was estimated. Were you using one of the 70 m antenna with the same configurations we recommended some time ago? Has this been a recurring incident in you observations? I could suggest a simple 20 second or a 2 minute test to be run just prior to and following the observation to measure the system sensitivity and noise temperature to determine system noise performance. Art Freiley From rsimpson Tue Mar 25 15:13:41 2008 Return-Path: Received: (from rsimpson@localhost) by magellan.stanford.edu (8.11.7p3+Sun/8.11.7) id m2PMDeC25826; Tue, 25 Mar 2008 15:13:40 -0700 (PDT) Date: Tue, 25 Mar 2008 15:13:40 -0700 (PDT) From: Dick Simpson 650-723-3525 Message-Id: <200803252213.m2PMDeC25826@magellan.stanford.edu> To: Arthur.J.Freiley@jpl.nasa.gov Subject: Re: MEX DSN Bistatic Radar Data Cc: rsimpson Content-Length: 1851 Status: R >I am interested in the apparent high system noise temperature and how >it was estimated. Were you using one of the 70 m antenna with the >same configurations we recommended some time ago? Hi, Art: Yes, that's the procedure. We switched from cold sky to the ambient load and the noise power changed by 5.3 dB. Normally I would expect something more like 10 dB. >Has this been a recurring incident in you observations? There have been issues in recent observations, often with S-LCP. But this is the first time we have used DSS 14 in a couple years. So I wouldn't say that there's a history -- at least not at 14. >I could suggest a simple 20 >second or a 2 minute test to be run just prior to and following the >observation to measure the system sensitivity and noise temperature >to determine system noise performance. The normal procedure is the one we developed with you and the Goldstone staff several years ago. It takes 80 minutes to complete the pre-cal and another 30 for the post-cal. It's been pretty dependable, and has been adopted by other people doing radio science. The puzzle on 2008/083 was that we saw the 5.3 dB change with the real-time monitors on S-LCP (the other three channels were nominal). When I got the data to Stanford and did more serious processing, the ambient load causes an 11 dB change in the noise power - which I consider very acceptable. So there may be a problem in the real time monitoring rather than the receiver system. And, since we have been having related issues elsewhere, it may be the software that needs to be checked and not the hardware. I think your department is off the hook. And the best news is that the data appear to be completely unscathed; only the experimenter is suffering additional anxiety. Thanks, Dick From Arthur.J.Freiley@jpl.nasa.gov Wed Mar 26 07:10:35 2008 Return-Path: Received: from nmta1.jpl.nasa.gov (nmta1.jpl.nasa.gov [137.78.160.214]) by magellan.stanford.edu (8.11.7p3+Sun/8.11.7) with ESMTP id m2QEAZC29690 for ; Wed, 26 Mar 2008 07:10:35 -0700 (PDT) Received: from xmta3.jpl.nasa.gov (xmta3.jpl.nasa.gov [137.78.160.111]) by nmta1.jpl.nasa.gov (Switch-3.2.6/Switch-3.2.6) with ESMTP id m2QEAYW4025544 for ; Wed, 26 Mar 2008 07:10:34 -0700 Received: from freiley-xp.jpl.nasa.gov (pc08009171656.jpl.nasa.gov [128.149.76.99]) by xmta3.jpl.nasa.gov (Switch-3.2.6/Switch-3.2.6) with ESMTP id m2QEAWQW031529 for ; Wed, 26 Mar 2008 07:10:32 -0700 Message-Id: <6.2.3.4.2.20080326063525.02c6f8c8@mail1.jpl.nasa.gov> X-Mailer: QUALCOMM Windows Eudora Version 6.2.3.4 Date: Wed, 26 Mar 2008 07:10:32 -0700 To: Dick Simpson 650-723-3525 From: Arthur J Freiley Subject: Re: MEX DSN Bistatic Radar Data In-Reply-To: <200803252213.m2PMDeC25826@magellan.stanford.edu> References: <200803252213.m2PMDeC25826@magellan.stanford.edu> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Source-IP: pc08009171656.jpl.nasa.gov [128.149.76.99] X-Source-Sender: Arthur.J.Freiley@jpl.nasa.gov X-AUTH: Authorized Content-Length: 2867 Status: RO Dick, We have seen some anomalies in the DTT reported Top measurements in the station logs for many of the antennas. System engineering has been trying to use the log Top to determine the health of the system on a routine bases and have been experiencing many higher that normal values. Their approach is to try to resolve the issues by taking more bad data and use statistics to get good reportable data. I was involved early on in the development of the data collection effort, but when I saw the data , I starting questioning the measurements and the calibration of the instruments. That approach quickly lost favor with the DSN chief engineer and was taken off the job. I am sorry to hear of you anxiety over the station measurements, but I am not surprised. I will report your anomaly and see what I can do. Keep in tough and if you get more questionable data, let me know. Art From rsimpson Wed Mar 26 09:30:31 2008 Return-Path: Received: (from rsimpson@localhost) by magellan.stanford.edu (8.11.7p3+Sun/8.11.7) id m2QGUVK00107; Wed, 26 Mar 2008 09:30:31 -0700 (PDT) Date: Wed, 26 Mar 2008 09:30:31 -0700 (PDT) From: Dick Simpson 650-723-3525 Message-Id: <200803261630.m2QGUVK00107@magellan.stanford.edu> To: Arthur.J.Freiley@jpl.nasa.gov Subject: Re: MEX DSN Bistatic Radar Data Cc: rsimpson Content-Length: 539 Status: R >I will report your anomaly and see what I can do. >Keep in tough and if you get more questionable data, let me know. I'm not sure where the ADC rms and amplitude shown in the RSR GUI come from. I'm assuming they are at least handled by the RSR software, if not created within the RSR subsystem. Beyond that I have no clues. You're on my distribution for reports, so you'll be getting more as we continue the experiment. There is a break, however; the next experiment will be no sooner than early May. Thanks, Dick