From ssantos@u-tokyo.ac.jp Wed Sep 27 09:54:24 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!u-tokyo!ssantos From: ssantos@u-tokyo.ac.jp (Sun-mi Santos) Newsgroups: comp.dsp Subject: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep27.095424.1893@u-tokyo.ac.jp> Date: Wed, 27 Sep 1995 09:54:24 GMT Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 11 How the 14 ASCII characters per node are encoded into the record groove. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). 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. -- Sun-mi Santos | ssantos@u-tokyo.ac.jp PGP Key fingerprint: 2B88 8DF1 7629 C093 "Keep the channels open." From hschneider@netcom.com Thu Sep 28 11:29:24 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!netcom!hschneider From: hschneider@netcom.com (Hugo Schneider) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep28.112924.3042@netcom.com> Date: Thu, 28 Sep 1995 11:29:24 GMT References: <1995Sep27.095424.1893@u-tokyo.ac.jp> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1995Sep27.095424.1893@u-tokyo.ac.jp>, ssantos@u-tokyo.ac.jp (Sun-mi Santos) writes: > How the 14 ASCII characters per node are encoded into the record groove. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Hugo Schneider -- NETCOM On-Line Communication Services "A soul is not exclusive to biology." From nivanov@clari.net Thu Sep 28 16:09:24 1995 Path: ashpoly!cascade!transat!ukc!fennimore!clari!nivanov From: nivanov@clari.net (Natalia Ivanov) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep28.160924.6122@clari.net> Date: Thu, 28 Sep 1995 16:09:24 GMT References: <1995Sep27.095424.1893@u-tokyo.ac.jp> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Sep27.095424.1893@u-tokyo.ac.jp>, ssantos@u-tokyo.ac.jp (Sun-mi Santos) writes: > How the 14 ASCII characters per node are encoded into the record groove. > The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Natalia Ivanov Hayes Optima 288 @ ISDN 64k bps "A soul is not exclusive to biology."