From rrobertson@clari.net Wed Dec 04 22:16:24 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!clari!rrobertson From: rrobertson@clari.net (Rodrigo Robertson) Newsgroups: comp.dsp Subject: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Dec04.221624.3352@clari.net> Date: Wed, 04 Dec 1996 22:16:24 GMT Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: NewsWatcher 2.0b24 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). The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- Rodrigo Robertson Tape trading list upon request. SASE required for international mail. From jsokolov@kth.se Thu Dec 05 08:34:24 1996 Path: ashpoly!cascade!brgate!saturno!kth!jsokolov From: jsokolov@kth.se (Jens Sokolov) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Dec05.083424.8019@kth.se> Date: Thu, 05 Dec 1996 08:34:24 GMT References: <1996Dec04.221624.3352@clari.net> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1996Dec04.221624.3352@clari.net>, rrobertson@clari.net (Rodrigo Robertson) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- === Jens Sokolov === Dept of Electrical Engineering, Royal Institute of Technology, Stockholm "The carrier frequency does not drift by accident." From jsuzuki@cam.ac.uk Fri Dec 06 07:35:24 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!cam!jsuzuki From: jsuzuki@cam.ac.uk (Ji-woo Suzuki) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Dec06.073524.2363@cam.ac.uk> Date: Fri, 06 Dec 1996 07:35:24 GMT References: <1996Dec04.221624.3352@clari.net> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1996Dec04.221624.3352@clari.net>, rrobertson@clari.net (Rodrigo Robertson) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Ji-woo Suzuki Tape trading list upon request. SASE required for international mail. From mmoreau@unam.mx Fri Dec 06 09:04:24 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!unam!mmoreau From: mmoreau@unam.mx (Morag Moreau) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Dec06.090424.7019@unam.mx> Date: Fri, 06 Dec 1996 09:04:24 GMT References: <1996Dec04.221624.3352@clari.net> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Dec04.221624.3352@clari.net>, rrobertson@clari.net (Rodrigo Robertson) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Morag Moreau Practical Peripherals 14.4 @ 9600 Telebit bps "Hold for relay." From dpark@berkeley.edu Sat Dec 07 03:59:24 1996 Path: ashpoly!cascade!brgate!saturno!berkeley!dpark From: dpark@berkeley.edu (Dong-hyun Park) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Dec07.035924.2990@berkeley.edu> Date: Sat, 07 Dec 1996 03:59:24 GMT References: <1996Dec04.221624.3352@clari.net> <1996Dec06.090424.7019@unam.mx> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Dec06.090424.7019@unam.mx>, mmoreau@unam.mx (Morag Moreau) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Dong-hyun Park Tape trading list upon request. SASE required for international mail.