From aandersson@hanse.de Fri May 05 09:00:56 1995
Path: ashpoly!cascade!brgate!saturno!hanse!aandersson
From: aandersson@hanse.de (Anton Andersson)
Newsgroups: comp.dsp
Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995May05.090056.5791@hanse.de>
Date: Fri, 05 May 1995 09:00:56 GMT
Organization: Hanse-Netzwerk Hamburg
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Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings.

Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'.
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.

-- 
Anton Andersson -- Hanse-Netzwerk Hamburg
"Tape doesn't lie at 02:14. Ears do."

From bpopov@unam.mx Sat May 06 07:27:56 1995
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!unam!bpopov
From: bpopov@unam.mx (Brian Popov)
Newsgroups: comp.dsp
Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995May06.072756.4578@unam.mx>
Date: Sat, 06 May 1995 07:27:56 GMT
References: <1995May05.090056.5791@hanse.de>
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In article <1995May05.090056.5791@hanse.de>, aandersson@hanse.de (Anton Andersson) writes:
> Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings.

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

My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise!

-- 
Brian Popov
Opinions expressed are solely my own and not those of Universidad Nacional Autónoma de México (DGSCA).
------------------------------------------------------------

From jivanov@mit.edu Mon May 08 02:02:56 1995
Path: ashpoly!cascade!bigsur!mit!jivanov
From: jivanov@mit.edu (Ji-woo Ivanov)
Newsgroups: comp.dsp
Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995May08.020256.3061@mit.edu>
Date: Mon, 08 May 1995 02:02:56 GMT
References: <1995May05.090056.5791@hanse.de> <1995May06.072756.4578@unam.mx>
Organization: Massachusetts Institute of Technology
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In article <1995May06.072756.4578@unam.mx>, bpopov@unam.mx (Brian Popov) writes:
> The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code.

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

-- 
Ji-woo Ivanov
Tape trading list upon request. SASE required for international mail.

From hgarcia@ox.ac.uk Tue May 09 04:39:56 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!ox!hgarcia
From: hgarcia@ox.ac.uk (Hana García)
Newsgroups: comp.dsp
Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995May09.043956.1139@ox.ac.uk>
Date: Tue, 09 May 1995 04:39:56 GMT
References: <1995May05.090056.5791@hanse.de> <1995May06.072756.4578@unam.mx>
Organization: Oxford University Computing Laboratory
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In article <1995May06.072756.4578@unam.mx>, bpopov@unam.mx (Brian Popov) writes:
> The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code.
> My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise!

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

-- 
Hana García | hgarcia@ox.ac.uk
PGP Key fingerprint: BC6E 8894 2373 45FE
"Keep the channels open."