From dmoreno@delphi.com Thu Apr 20 01:17:29 1995
Path: ashpoly!cascade!transat!ukc!fennimore!delphi!dmoreno
From: dmoreno@delphi.com (Diego Moreno)
Newsgroups: comp.dsp
Subject: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Apr20.011729.8606@delphi.com>
Date: Thu, 20 Apr 1995 01:17:29 GMT
Organization: Delphi Internet Services
NNTP-Posting-Host: delphi.com
X-Newsreader: NewsWatcher 2.0b24
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Differential Binary Phase Shift Keying (DBPSK) parameter extraction results.

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.

The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design.

-- 
Diego Moreno
Tape trading list upon request. SASE required for international mail.

From asouza@kth.se Fri Apr 21 13:26:29 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!kth!asouza
From: asouza@kth.se (Astrid Souza)
Newsgroups: comp.dsp
Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Apr21.132629.4233@kth.se>
Date: Fri, 21 Apr 1995 13:26:29 GMT
References: <1995Apr20.011729.8606@delphi.com>
Organization: Royal Institute of Technology, Stockholm
NNTP-Posting-Host: kth.se
X-Newsreader: NewsWatcher 2.0b24
Lines: 10

In article <1995Apr20.011729.8606@delphi.com>, dmoreno@delphi.com (Diego Moreno) writes:
> Differential Binary Phase Shift Keying (DBPSK) parameter extraction results.
> The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20).

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

-- 
=== Astrid Souza ===
Dept of Electrical Engineering, Royal Institute of Technology, Stockholm
"5 sigma is a discovery. 7 is a question."