From rfischer@panix.com Wed Dec 06 07:42:31 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!panix!rfischer
From: rfischer@panix.com (Raj Fischer)
Newsgroups: comp.dsp
Subject: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Dec06.074231.7774@panix.com>
Date: Wed, 06 Dec 1995 07:42:31 GMT
Organization: Public Access Unix of New York
NNTP-Posting-Host: panix.com
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.

-- 
Raj Fischer
Tape trading list upon request. SASE required for international mail.

From pmoreau@stanford.edu Thu Dec 07 08:52:31 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!stanford!pmoreau
From: pmoreau@stanford.edu (Pavel Moreau)
Newsgroups: comp.dsp
Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Dec07.085231.3896@stanford.edu>
Date: Thu, 07 Dec 1995 08:52:31 GMT
References: <1995Dec06.074231.7774@panix.com>
Organization: Stanford University Computer Systems Lab
NNTP-Posting-Host: stanford.edu
X-Newsreader: WinVN 0.99.5
Lines: 12

In article <1995Dec06.074231.7774@panix.com>, rfischer@panix.com (Raj Fischer) 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.

Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns.

-- 
=== Pavel Moreau ===
Dept of Electrical Engineering, Stanford University Computer Systems Lab
"Extraordinary claims require extraordinary spectra."