From kpopov@cmu.edu Fri Nov 03 15:07:39 1995
Path: ashpoly!cascade!brgate!saturno!cmu!kpopov
From: kpopov@cmu.edu (Kirsty Popov)
Newsgroups: comp.dsp
Subject: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Nov03.150739.1565@cmu.edu>
Date: Fri, 03 Nov 1995 15:07:39 GMT
Organization: Carnegie Mellon University School of CS
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How the 14 ASCII characters per node are encoded into the record groove.

The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20).
Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'.

When all 14 rows are assembled, the matrix forms an 80-column ASCII status report.

-- 
Kirsty Popov
Tape trading list upon request. SASE required for international mail.

From fkarlsson@illinois.edu Fri Nov 03 17:23:39 1995
Path: ashpoly!cascade!transat!ukc!fennimore!illinois!fkarlsson
From: fkarlsson@illinois.edu (Fiona Karlsson)
Newsgroups: comp.dsp
Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Nov03.172339.8547@illinois.edu>
Date: Fri, 03 Nov 1995 17:23:39 GMT
References: <1995Nov03.150739.1565@cmu.edu>
Organization: University of Illinois Urbana-Champaign
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In article <1995Nov03.150739.1565@cmu.edu>, kpopov@cmu.edu (Kirsty Popov) writes:
> How the 14 ASCII characters per node are encoded into the record groove.

The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code.

-- 
Fiona Karlsson -- University of Illinois Urbana-Champaign
"5 sigma is a discovery. 7 is a question."

From jsato@clari.net Sun Nov 05 13:22:39 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!clari!jsato
From: jsato@clari.net (Julien Sato)
Newsgroups: comp.dsp
Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Nov05.132239.3492@clari.net>
Date: Sun, 05 Nov 1995 13:22:39 GMT
References: <1995Nov03.150739.1565@cmu.edu>
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In article <1995Nov03.150739.1565@cmu.edu>, kpopov@cmu.edu (Kirsty Popov) writes:
> How the 14 ASCII characters per node are encoded into the record groove.
> The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20).

The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code.

Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs.

-- 
Julien Sato -- ClariNet Communications Corp
"In theory there is no difference between theory and practice."

From jpetrov@cmu.edu Sun Nov 05 15:08:39 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!cmu!jpetrov
From: jpetrov@cmu.edu (Joachim Petrov)
Newsgroups: comp.dsp
Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Nov05.150839.3501@cmu.edu>
Date: Sun, 05 Nov 1995 15:08:39 GMT
References: <1995Nov03.150739.1565@cmu.edu>
Organization: Carnegie Mellon University School of CS
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X-Newsreader: Netscape 1.1N
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In article <1995Nov03.150739.1565@cmu.edu>, kpopov@cmu.edu (Kirsty Popov) writes:
> How the 14 ASCII characters per node are encoded into the record groove.
> The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20).

The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration!

-- 
Joachim Petrov -- Carnegie Mellon University School of CS
"Hold for relay."