From rfischer@kth.se Thu Sep 19 02:17:11 1996 Path: ashpoly!cascade!mxgate!coyoacan!kth!rfischer From: rfischer@kth.se (Rodrigo Fischer) Newsgroups: comp.dsp Subject: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep19.021711.2215@kth.se> Date: Thu, 19 Sep 1996 02:17:11 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: Netscape 1.1N Lines: 11 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. Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- Rodrigo Fischer | rfischer@kth.se PGP Key fingerprint: 2050 FAA0 F87C 517D "Keep the channels open." From msato@delphi.com Thu Sep 19 10:46:11 1996 Path: ashpoly!cascade!transat!ukc!fennimore!delphi!msato From: msato@delphi.com (Marisol Sato) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep19.104611.6608@delphi.com> Date: Thu, 19 Sep 1996 10:46:11 GMT References: <1996Sep19.021711.2215@kth.se> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Sep19.021711.2215@kth.se>, rfischer@kth.se (Rodrigo Fischer) 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. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Marisol Sato Opinions expressed are solely my own and not those of Delphi Internet Services. ------------------------------------------------------------ From jpopov@utexas.edu Fri Sep 20 03:49:11 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!utexas!jpopov From: jpopov@utexas.edu (Joachim Popov) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep20.034911.3372@utexas.edu> Date: Fri, 20 Sep 1996 03:49:11 GMT References: <1996Sep19.021711.2215@kth.se> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1996Sep19.021711.2215@kth.se>, rfischer@kth.se (Rodrigo Fischer) 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. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Joachim Popov Zyxel U-1496E @ 33,600 bps "A soul is not exclusive to biology." From clopez@kiae.su Fri Sep 20 11:20:11 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kiae!clopez From: clopez@kiae.su (Camila López) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep20.112011.1989@kiae.su> Date: Fri, 20 Sep 1996 11:20:11 GMT References: <1996Sep19.021711.2215@kth.se> <1996Sep20.034911.3372@utexas.edu> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Sep20.034911.3372@utexas.edu>, jpopov@utexas.edu (Joachim Popov) writes: > Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Camila López "In theory there is no difference between theory and practice." Atari TT030 / SunOS 4.1.4