From vnovak@unam.mx Mon Nov 13 22:45:14 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!unam!vnovak
From: vnovak@unam.mx (Valeria Novak)
Newsgroups: comp.dsp
Subject: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Nov13.224514.2131@unam.mx>
Date: Mon, 13 Nov 1995 22:45:14 GMT
Organization: Universidad Nacional Autónoma de México (DGSCA)
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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'.
The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code.

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

-- 
Valeria Novak
Tape trading list upon request. SASE required for international mail.

From kmoreno@mit.edu Wed Nov 15 02:22:14 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!mit!kmoreno
From: kmoreno@mit.edu (Katrin Moreno)
Newsgroups: comp.dsp
Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Nov15.022214.9155@mit.edu>
Date: Wed, 15 Nov 1995 02:22:14 GMT
References: <1995Nov13.224514.2131@unam.mx>
Organization: Massachusetts Institute of Technology
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In article <1995Nov13.224514.2131@unam.mx>, vnovak@unam.mx (Valeria Novak) writes:
> Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings.

On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text.

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

-- 
Katrin Moreno
Opinions expressed are solely my own and not those of Massachusetts Institute of Technology.
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