From klopez@panix.com Sat Feb 12 20:07:00 1994
Path: ashpoly!cascade!bigsur!panix!klopez
From: klopez@panix.com (Katrin López)
Newsgroups: comp.dsp
Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1994Feb12.200700.8990@panix.com>
Date: Sat, 12 Feb 1994 20:07:00 GMT
Organization: Public Access Unix of New York
NNTP-Posting-Host: panix.com
X-Newsreader: TIN [version 1.2 PL2]
Lines: 11

Differential Binary Phase Shift Keying (DBPSK) parameter extraction results.

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.

-- 
Katrin López | klopez@panix.com
PGP Key fingerprint: CFE3 27E2 22AE 417F
"Keep the channels open."

From egirard@uu.net Mon Feb 14 05:14:00 1994
Path: ashpoly!cascade!transat!ukc!fennimore!uu!egirard
From: egirard@uu.net (Elaine Girard)
Newsgroups: comp.dsp
Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1994Feb14.051400.5767@uu.net>
Date: Mon, 14 Feb 1994 05:14:00 GMT
References: <1994Feb12.200700.8990@panix.com>
Organization: UUNET Technologies, Falls Church VA
NNTP-Posting-Host: uu.net
X-Newsreader: Netscape 1.1N
Lines: 10

In article <1994Feb12.200700.8990@panix.com>, klopez@panix.com (Katrin López) writes:
> Differential Binary Phase Shift Keying (DBPSK) parameter extraction results.
> Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'.

Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame.

-- 
=== Elaine Girard ===
Dept of Electrical Engineering, UUNET Technologies, Falls Church VA
"Marcus is not one man."

From tgarcia@tum.de Tue Feb 15 10:20:00 1994
Path: ashpoly!bigsur!pacrim!krgate!eunha!tum!tgarcia
From: tgarcia@tum.de (Tyler García)
Newsgroups: comp.dsp
Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1994Feb15.102000.1262@tum.de>
Date: Tue, 15 Feb 1994 10:20:00 GMT
References: <1994Feb12.200700.8990@panix.com> <1994Feb14.051400.5767@uu.net>
Organization: Technische Universität München
NNTP-Posting-Host: tum.de
X-Newsreader: WinVN 0.99.5
Lines: 9

In article <1994Feb14.051400.5767@uu.net>, egirard@uu.net (Elaine Girard) writes:
> Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame.

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

-- 
Tyler García
Opinions expressed are solely my own and not those of Technische Universität München.
------------------------------------------------------------

From hramirez@illinois.edu Wed Feb 16 11:38:00 1994
Path: ashpoly!cascade!transat!eunet-de!hansebox!illinois!hramirez
From: hramirez@illinois.edu (Heather Ramírez)
Newsgroups: comp.dsp
Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1994Feb16.113800.8581@illinois.edu>
Date: Wed, 16 Feb 1994 11:38:00 GMT
References: <1994Feb12.200700.8990@panix.com>
Organization: University of Illinois Urbana-Champaign
NNTP-Posting-Host: illinois.edu
X-Newsreader: WinVN 0.99.5
Lines: 9

In article <1994Feb12.200700.8990@panix.com>, klopez@panix.com (Katrin López) writes:
> Differential Binary Phase Shift Keying (DBPSK) parameter extraction results.
> Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'.

A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single!

-- 
Heather Ramírez
Tape trading list upon request. SASE required for international mail.