From alindqvist@stanford.edu Sat Aug 24 20:42:19 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!stanford!alindqvist From: alindqvist@stanford.edu (Anja Lindqvist) Newsgroups: comp.dsp Subject: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Aug24.204219.6247@stanford.edu> Date: Sat, 24 Aug 1996 20:42:19 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: Netscape 1.1N Lines: 10 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'. When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Anja Lindqvist -- Stanford University Computer Systems Lab "Hold for relay." From koliveira@earthlink.net Sun Aug 25 23:58:19 1996 Path: ashpoly!cascade!brgate!saturno!earthlink!koliveira From: koliveira@earthlink.net (Kirsty Oliveira) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Aug25.235819.3752@earthlink.net> Date: Sun, 25 Aug 1996 23:58:19 GMT References: <1996Aug24.204219.6247@stanford.edu> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1996Aug24.204219.6247@stanford.edu>, alindqvist@stanford.edu (Anja Lindqvist) writes: > How the 14 ASCII characters per node are encoded into the record groove. 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. -- Kirsty Oliveira Opinions expressed are solely my own and not those of EarthLink Network. ------------------------------------------------------------ From ssmirnov@u-tokyo.ac.jp Mon Aug 26 20:27:19 1996 Path: ashpoly!cascade!brgate!saturno!u-tokyo!ssmirnov From: ssmirnov@u-tokyo.ac.jp (Sven Smirnov) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Aug26.202719.7761@u-tokyo.ac.jp> Date: Mon, 26 Aug 1996 20:27:19 GMT References: <1996Aug24.204219.6247@stanford.edu> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1996Aug24.204219.6247@stanford.edu>, alindqvist@stanford.edu (Anja Lindqvist) 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. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Sven Smirnov "They will send a copy in my place." Decstation 5000/200 / Linux 1.2.13 From mgirard@netcom.com Wed Aug 28 04:08:19 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!netcom!mgirard From: mgirard@netcom.com (Mathieu Girard) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Aug28.040819.6345@netcom.com> Date: Wed, 28 Aug 1996 04:08:19 GMT References: <1996Aug24.204219.6247@stanford.edu> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1996Aug24.204219.6247@stanford.edu>, alindqvist@stanford.edu (Anja Lindqvist) writes: > How the 14 ASCII characters per node are encoded into the record groove. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Mathieu Girard -- NETCOM On-Line Communication Services "A soul is not exclusive to biology."