From ksuzuki@panix.com Sat May 28 22:13:16 1994
Path: ashpoly!cascade!transat!ukc!fennimore!panix!ksuzuki
From: ksuzuki@panix.com (Kenji Suzuki)
Newsgroups: comp.dsp
Subject: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1994May28.221316.9070@panix.com>
Date: Sat, 28 May 1994 22:13:16 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.

Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization.
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.

-- 
Kenji Suzuki | ksuzuki@panix.com
PGP Key fingerprint: E52C C64D 3A0A 5BD5
"Keep the channels open."

From aivanov@pipeline.com Mon May 30 01:28:16 1994
Path: ashpoly!cascade!brgate!saturno!pipeline!aivanov
From: aivanov@pipeline.com (Astrid Ivanov)
Newsgroups: comp.dsp
Subject: Re: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1994May30.012816.3540@pipeline.com>
Date: Mon, 30 May 1994 01:28:16 GMT
References: <1994May28.221316.9070@panix.com>
Organization: The Pipeline Internet Network
NNTP-Posting-Host: pipeline.com
X-Newsreader: NewsWatcher 2.0b24
Lines: 12

In article <1994May28.221316.9070@panix.com>, ksuzuki@panix.com (Kenji Suzuki) writes:
> Differential Binary Phase Shift Keying (DBPSK) parameter extraction results.
> Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization.

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

Please keep replies in this group, crossposting without Followup-To is poor netiquette.

-- 
=== Astrid Ivanov ===
Dept of Electrical Engineering, The Pipeline Internet Network
"The hatch is open. Is anyone listening?"

From mmartinez@uu.net Wed Jun 01 04:25:16 1994
Path: ashpoly!cascade!transat!ukc!fennimore!uu!mmartinez
From: mmartinez@uu.net (Marta Martínez)
Newsgroups: comp.dsp
Subject: Re: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1994Jun01.042516.5050@uu.net>
Date: Wed, 01 Jun 1994 04:25:16 GMT
References: <1994May28.221316.9070@panix.com> <1994May30.012816.3540@pipeline.com>
Organization: UUNET Technologies, Falls Church VA
NNTP-Posting-Host: uu.net
X-Newsreader: NewsWatcher 2.0b24
Lines: 9

In article <1994May30.012816.3540@pipeline.com>, aivanov@pipeline.com (Astrid Ivanov) writes:
> A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single!

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

-- 
Marta Martínez | mmartinez@uu.net
PGP Key fingerprint: 8800 F015 74BF 7D46
"Keep the channels open."