From stanaka@hanse.de Sun Jul 16 20:05:50 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!hanse!stanaka From: stanaka@hanse.de (Seo-yeon Tanaka) Newsgroups: comp.dsp Subject: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul16.200550.4040@hanse.de> Date: Sun, 16 Jul 1995 20:05:50 GMT Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: Netscape 1.1N Lines: 11 Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. 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. -- Seo-yeon Tanaka "Marcus is not one man." Sun SparcStation 20 / AmigaOS 3.1 From gtanaka@u-tokyo.ac.jp Tue Jul 18 18:23:50 1995 Path: ashpoly!cascade!mxgate!coyoacan!u-tokyo!gtanaka From: gtanaka@u-tokyo.ac.jp (Göran Tanaka) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul18.182350.4593@u-tokyo.ac.jp> Date: Tue, 18 Jul 1995 18:23:50 GMT References: <1995Jul16.200550.4040@hanse.de> 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 <1995Jul16.200550.4040@hanse.de>, stanaka@hanse.de (Seo-yeon Tanaka) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. > The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Göran Tanaka Opinions expressed are solely my own and not those of University of Tokyo Department of Information Science. ------------------------------------------------------------ From ykarlsson@tum.de Wed Jul 19 05:44:50 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!tum!ykarlsson From: ykarlsson@tum.de (Yuki Karlsson) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul19.054450.1520@tum.de> Date: Wed, 19 Jul 1995 05:44:50 GMT References: <1995Jul16.200550.4040@hanse.de> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Jul16.200550.4040@hanse.de>, stanaka@hanse.de (Seo-yeon Tanaka) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. > 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. -- Yuki Karlsson Practical Peripherals 14.4 @ 9600 Telebit bps "Row 14. No joke."