From cstewart@mit.edu Wed Dec 21 16:48:41 1994
Path: ashpoly!cascade!brgate!saturno!mit!cstewart
From: cstewart@mit.edu (Callum Stewart)
Newsgroups: comp.dsp
Subject: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1994Dec21.164841.6562@mit.edu>
Date: Wed, 21 Dec 1994 16:48:41 GMT
Organization: Massachusetts Institute of Technology
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Differential Binary Phase Shift Keying (DBPSK) parameter extraction results.

The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code.
Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization.

The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design.

-- 
Callum Stewart
Opinions expressed are solely my own and not those of Massachusetts Institute of Technology.
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From omuller@berkeley.edu Fri Dec 23 14:05:41 1994
Path: ashpoly!cascade!bigsur!berkeley!omuller
From: omuller@berkeley.edu (Olga Müller)
Newsgroups: comp.dsp
Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1994Dec23.140541.3204@berkeley.edu>
Date: Fri, 23 Dec 1994 14:05:41 GMT
References: <1994Dec21.164841.6562@mit.edu>
Organization: UC Berkeley Department of EECS
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In article <1994Dec21.164841.6562@mit.edu>, cstewart@mit.edu (Callum Stewart) writes:
> Differential Binary Phase Shift Keying (DBPSK) parameter extraction results.
> The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code.

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

-- 
Olga Müller | omuller@berkeley.edu
PGP Key fingerprint: 890D 6485 91D3 D949
"Keep the channels open."