From mfischer@tum.de Wed Dec 14 16:53:37 1994
Path: ashpoly!bigsur!pacrim!jpgate!kamome!tum!mfischer
From: mfischer@tum.de (Mikhail Fischer)
Newsgroups: comp.dsp
Subject: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1994Dec14.165337.6572@tum.de>
Date: Wed, 14 Dec 1994 16:53:37 GMT
Organization: Technische Universität München
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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).
Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization.

Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword.

-- 
Mikhail Fischer
Opinions expressed are solely my own and not those of Technische Universität München.
------------------------------------------------------------

From rmartinez@kth.se Thu Dec 15 07:34:37 1994
Path: ashpoly!cascade!transat!sunet!nordrelay!kth!rmartinez
From: rmartinez@kth.se (Rodrigo Martínez)
Newsgroups: comp.dsp
Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1994Dec15.073437.5522@kth.se>
Date: Thu, 15 Dec 1994 07:34:37 GMT
References: <1994Dec14.165337.6572@tum.de>
Organization: Royal Institute of Technology, Stockholm
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In article <1994Dec14.165337.6572@tum.de>, mfischer@tum.de (Mikhail Fischer) 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.

Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin!

-- 
Rodrigo Martínez -- Royal Institute of Technology, Stockholm
"A soul is not exclusive to biology."

From ydubois@ox.ac.uk Thu Dec 15 10:00:37 1994
Path: ashpoly!cascade!transat!eunet-fr!teletel!ox!ydubois
From: ydubois@ox.ac.uk (Yuki Dubois)
Newsgroups: comp.dsp
Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1994Dec15.100037.7456@ox.ac.uk>
Date: Thu, 15 Dec 1994 10:00:37 GMT
References: <1994Dec14.165337.6572@tum.de> <1994Dec15.073437.5522@kth.se>
Organization: Oxford University Computing Laboratory
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In article <1994Dec15.073437.5522@kth.se>, rmartinez@kth.se (Rodrigo Martínez) writes:
> The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code.

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

-- 
=== Yuki Dubois ===
Dept of Electrical Engineering, Oxford University Computing Laboratory
"There are 14 nodes and only 10 countries. Count again."