From sperez@cam.ac.uk Tue Mar 26 00:42:45 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!cam!sperez From: sperez@cam.ac.uk (Seo-yeon Pérez) Newsgroups: comp.dsp Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Mar26.004245.4998@cam.ac.uk> Date: Tue, 26 Mar 1996 00:42:45 GMT Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 10 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 symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Seo-yeon Pérez Tape trading list upon request. SASE required for international mail. From lsuzuki@utexas.edu Wed Mar 27 01:41:45 1996 Path: ashpoly!cascade!mxgate!coyoacan!utexas!lsuzuki From: lsuzuki@utexas.edu (Liam Suzuki) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Mar27.014145.6012@utexas.edu> Date: Wed, 27 Mar 1996 01:41:45 GMT References: <1996Mar26.004245.4998@cam.ac.uk> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Mar26.004245.4998@cam.ac.uk>, sperez@cam.ac.uk (Seo-yeon Pérez) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- === Liam Suzuki === Dept of Electrical Engineering, University of Texas at Austin "In theory there is no difference between theory and practice." From jduarte@clari.net Wed Mar 27 18:31:45 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!clari!jduarte From: jduarte@clari.net (Jen Duarte) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Mar27.183145.5694@clari.net> Date: Wed, 27 Mar 1996 18:31:45 GMT References: <1996Mar26.004245.4998@cam.ac.uk> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N Lines: 11 In article <1996Mar26.004245.4998@cam.ac.uk>, sperez@cam.ac.uk (Seo-yeon Pérez) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Jen Duarte "Row 14. No joke." Sun 3/60 (SunOS 4.1.1) / TOS 4.04 From mperez@unam.mx Thu Mar 28 04:45:45 1996 Path: ashpoly!cascade!brgate!saturno!unam!mperez From: mperez@unam.mx (Mathieu Pérez) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Mar28.044545.4546@unam.mx> Date: Thu, 28 Mar 1996 04:45:45 GMT References: <1996Mar26.004245.4998@cam.ac.uk> <1996Mar27.183145.5694@clari.net> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1996Mar27.183145.5694@clari.net>, jduarte@clari.net (Jen Duarte) writes: > Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Mathieu Pérez Tape trading list upon request. SASE required for international mail.