From mkuznetsov@ox.ac.uk Fri Jul 26 11:23:14 1996
Path: ashpoly!cascade!transat!eunet-de!hansebox!ox!mkuznetsov
From: mkuznetsov@ox.ac.uk (Mathieu Kuznetsov)
Newsgroups: comp.dsp
Subject: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1996Jul26.112314.2862@ox.ac.uk>
Date: Fri, 26 Jul 1996 11:23:14 GMT
Organization: Oxford University Computing Laboratory
NNTP-Posting-Host: ox.ac.uk
X-Newsreader: TIN [version 1.2 PL2]
Lines: 10

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 symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20).

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

-- 
Mathieu Kuznetsov
Tape trading list upon request. SASE required for international mail.

From ksouza@demon.co.uk Sat Jul 27 14:02:14 1996
Path: ashpoly!cascade!transat!ukc!fennimore!demon!ksouza
From: ksouza@demon.co.uk (Katrin Souza)
Newsgroups: comp.dsp
Subject: Re: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1996Jul27.140214.8502@demon.co.uk>
Date: Sat, 27 Jul 1996 14:02:14 GMT
References: <1996Jul26.112314.2862@ox.ac.uk>
Organization: Demon Internet Services UK
NNTP-Posting-Host: demon.co.uk
X-Newsreader: NewsWatcher 2.0b24
Lines: 9

In article <1996Jul26.112314.2862@ox.ac.uk>, mkuznetsov@ox.ac.uk (Mathieu Kuznetsov) 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.

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

-- 
Katrin Souza -- Demon Internet Services UK
"Row 14. No joke."