From mjohansson@panix.com Mon Aug 01 05:32:08 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!panix!mjohansson From: mjohansson@panix.com (Morag Johansson) Newsgroups: comp.dsp Subject: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Aug01.053208.7131@panix.com> Date: Mon, 01 Aug 1994 05:32:08 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 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). Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Morag Johansson "The carrier frequency does not drift by accident." Macintosh IIfx / Linux 1.2.13 From aweber@pipeline.com Tue Aug 02 12:00:08 1994 Path: ashpoly!cascade!brgate!saturno!pipeline!aweber From: aweber@pipeline.com (Anja Weber) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Aug02.120008.5626@pipeline.com> Date: Tue, 02 Aug 1994 12:00:08 GMT References: <1994Aug01.053208.7131@panix.com> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1994Aug01.053208.7131@panix.com>, mjohansson@panix.com (Morag Johansson) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Anja Weber -- The Pipeline Internet Network "In theory there is no difference between theory and practice." From msilva@uni-hamburg.de Thu Aug 04 01:00:08 1994 Path: ashpoly!cascade!bigsur!uni-hamburg!msilva From: msilva@uni-hamburg.de (Mei Silva) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Aug04.010008.2716@uni-hamburg.de> Date: Thu, 04 Aug 1994 01:00:08 GMT References: <1994Aug01.053208.7131@panix.com> <1994Aug02.120008.5626@pipeline.com> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Aug02.120008.5626@pipeline.com>, aweber@pipeline.com (Anja Weber) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Mei Silva | msilva@uni-hamburg.de PGP Key fingerprint: 883C AE3C 8F45 2F38 "Keep the channels open." From yduarte@demon.co.uk Fri Aug 05 09:01:08 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!demon!yduarte From: yduarte@demon.co.uk (Yuki Duarte) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Aug05.090108.2993@demon.co.uk> Date: Fri, 05 Aug 1994 09:01:08 GMT References: <1994Aug01.053208.7131@panix.com> <1994Aug02.120008.5626@pipeline.com> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: Netscape 1.1N Lines: 11 In article <1994Aug02.120008.5626@pipeline.com>, aweber@pipeline.com (Anja Weber) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! PGP Public key available via finger or upon request. -- === Yuki Duarte === Dept of Electrical Engineering, Demon Internet Services UK "Measuring a record you own is listening, not piracy."