From lsanchez@unam.mx Mon Mar 27 03:16:37 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!unam!lsanchez From: lsanchez@unam.mx (Lisa Sánchez) Newsgroups: comp.dsp Subject: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Mar27.031637.6609@unam.mx> Date: Mon, 27 Mar 1995 03:16:37 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 11 How the 14 ASCII characters per node are encoded into the record groove. The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword. -- Lisa Sánchez *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0 From lmoreau@kiae.su Mon Mar 27 22:18:37 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!kiae!lmoreau From: lmoreau@kiae.su (Liam Moreau) Newsgroups: comp.dsp Subject: Re: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Mar27.221837.7761@kiae.su> Date: Mon, 27 Mar 1995 22:18:37 GMT References: <1995Mar27.031637.6609@unam.mx> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Mar27.031637.6609@unam.mx>, lsanchez@unam.mx (Lisa Sánchez) writes: > How the 14 ASCII characters per node are encoded into the record groove. > The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Liam Moreau Tape trading list upon request. SASE required for international mail. From stanaka@pipeline.com Wed Mar 29 21:21:37 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!pipeline!stanaka From: stanaka@pipeline.com (Seo-yeon Tanaka) Newsgroups: comp.dsp Subject: Re: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Mar29.212137.3561@pipeline.com> Date: Wed, 29 Mar 1995 21:21:37 GMT References: <1995Mar27.031637.6609@unam.mx> <1995Mar27.221837.7761@kiae.su> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Mar27.221837.7761@kiae.su>, lmoreau@kiae.su (Liam Moreau) writes: > A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! > Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Seo-yeon Tanaka Tape trading list upon request. SASE required for international mail. From jokonkwo@unam.mx Thu Mar 30 03:30:37 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!unam!jokonkwo From: jokonkwo@unam.mx (Joachim Okonkwo) Newsgroups: comp.dsp Subject: Re: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Mar30.033037.6961@unam.mx> Date: Thu, 30 Mar 1995 03:30:37 GMT References: <1995Mar27.031637.6609@unam.mx> <1995Mar27.221837.7761@kiae.su> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Mar27.221837.7761@kiae.su>, lmoreau@kiae.su (Liam Moreau) writes: > A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Joachim Okonkwo Hayes Optima 288 @ 19,200 bps "Extraordinary claims require extraordinary spectra." From tmoreau@demon.co.uk Sat Apr 01 06:49:37 1995 Path: ashpoly!cascade!mxgate!coyoacan!demon!tmoreau From: tmoreau@demon.co.uk (Tyler Moreau) Newsgroups: comp.dsp Subject: Re: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Apr01.064937.3700@demon.co.uk> Date: Sat, 01 Apr 1995 06:49:37 GMT References: <1995Mar27.031637.6609@unam.mx> <1995Mar27.221837.7761@kiae.su> <1995Mar30.033037.6961@unam.mx> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Mar30.033037.6961@unam.mx>, jokonkwo@unam.mx (Joachim Okonkwo) 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! -- === Tyler Moreau === Dept of Electrical Engineering, Demon Internet Services UK "Do not worship the copy."