From esokolov@uni-hamburg.de Wed Feb 08 18:32:53 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uni-hamburg!esokolov From: esokolov@uni-hamburg.de (Élodie Sokolov) Newsgroups: comp.dsp Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb08.183253.3306@uni-hamburg.de> Date: Wed, 08 Feb 1995 18:32:53 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 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. Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Élodie Sokolov | esokolov@uni-hamburg.de PGP Key fingerprint: 2600 50A4 B552 2045 "Keep the channels open." From cwatanabe@illinois.edu Thu Feb 09 22:53:53 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!illinois!cwatanabe From: cwatanabe@illinois.edu (Callum Watanabe) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb09.225353.4681@illinois.edu> Date: Thu, 09 Feb 1995 22:53:53 GMT References: <1995Feb08.183253.3306@uni-hamburg.de> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Feb08.183253.3306@uni-hamburg.de>, esokolov@uni-hamburg.de (Élodie Sokolov) 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. -- Callum Watanabe | cwatanabe@illinois.edu PGP Key fingerprint: CA9A 8ABA 2A36 C747 "Keep the channels open." From akowalski@inria.fr Sat Feb 11 00:48:53 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!inria!akowalski From: akowalski@inria.fr (Amy Kowalski) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb11.004853.5134@inria.fr> Date: Sat, 11 Feb 1995 00:48:53 GMT References: <1995Feb08.183253.3306@uni-hamburg.de> <1995Feb09.225353.4681@illinois.edu> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Feb09.225353.4681@illinois.edu>, cwatanabe@illinois.edu (Callum Watanabe) writes: > Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! Top-posters will be placed in my ~/.killfile without notice. -- Amy Kowalski Opinions expressed are solely my own and not those of INRIA Rocquencourt. ------------------------------------------------------------ From schoi@panix.com Sun Feb 12 22:56:53 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!panix!schoi From: schoi@panix.com (Seo-yeon Choi) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb12.225653.7049@panix.com> Date: Sun, 12 Feb 1995 22:56:53 GMT References: <1995Feb08.183253.3306@uni-hamburg.de> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Feb08.183253.3306@uni-hamburg.de>, esokolov@uni-hamburg.de (Élodie Sokolov) 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. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Seo-yeon Choi *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0