From tgirard@pacbell.net Mon Sep 18 11:00:58 1995 Path: ashpoly!cascade!bigsur!pacbell!tgirard From: tgirard@pacbell.net (Tyler Girard) Newsgroups: comp.dsp Subject: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep18.110058.7771@pacbell.net> Date: Mon, 18 Sep 1995 11:00:58 GMT Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 How the 14 ASCII characters per node are encoded into the record groove. 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. The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- === Tyler Girard === Dept of Electrical Engineering, Pacific Bell Internet Services "Hold for relay." From ggonzalez@cern.ch Tue Sep 19 22:12:58 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cern!ggonzalez From: ggonzalez@cern.ch (Graham González) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep19.221258.7867@cern.ch> Date: Tue, 19 Sep 1995 22:12:58 GMT References: <1995Sep18.110058.7771@pacbell.net> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Sep18.110058.7771@pacbell.net>, tgirard@pacbell.net (Tyler Girard) writes: > How the 14 ASCII characters per node are encoded into the record groove. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Graham González Opinions expressed are solely my own and not those of European Laboratory for Particle Physics, Geneva. ------------------------------------------------------------ From yivanov@utexas.edu Fri Sep 22 00:45:58 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!utexas!yivanov From: yivanov@utexas.edu (Yuki Ivanov) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep22.004558.2810@utexas.edu> Date: Fri, 22 Sep 1995 00:45:58 GMT References: <1995Sep18.110058.7771@pacbell.net> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1995Sep18.110058.7771@pacbell.net>, tgirard@pacbell.net (Tyler Girard) writes: > How the 14 ASCII characters per node are encoded into the record groove. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Yuki Ivanov "Measuring a record you own is listening, not piracy." Commodore Amiga 500 (1MB OCS) / NEXTSTEP 3.3