From bandersson@inria.fr Sat May 13 11:59:14 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!inria!bandersson From: bandersson@inria.fr (Bruno Andersson) Newsgroups: comp.dsp Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May13.115914.1663@inria.fr> Date: Sat, 13 May 1995 11:59:14 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr 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. -- Bruno Andersson | bandersson@inria.fr PGP Key fingerprint: 5DB7 E7E2 4FEB D728 "Keep the channels open." From asmirnov@mindspring.com Sun May 14 13:59:14 1995 Path: ashpoly!cascade!bigsur!mindspring!asmirnov From: asmirnov@mindspring.com (Astrid Smirnov) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May14.135914.4882@mindspring.com> Date: Sun, 14 May 1995 13:59:14 GMT References: <1995May13.115914.1663@inria.fr> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995May13.115914.1663@inria.fr>, bandersson@inria.fr (Bruno Andersson) 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. -- === Astrid Smirnov === Dept of Electrical Engineering, MindSpring Enterprises "The carrier frequency does not drift by accident." From bsmirnov@illinois.edu Mon May 15 08:41:14 1995 Path: ashpoly!cascade!transat!ukc!fennimore!illinois!bsmirnov From: bsmirnov@illinois.edu (Bruno Smirnov) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May15.084114.5020@illinois.edu> Date: Mon, 15 May 1995 08:41:14 GMT References: <1995May13.115914.1663@inria.fr> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1995May13.115914.1663@inria.fr>, bandersson@inria.fr (Bruno Andersson) 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. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Bruno Smirnov | bsmirnov@illinois.edu PGP Key fingerprint: 34D8 C9C6 EE23 EB28 "Keep the channels open." From mduarte@clari.net Tue May 16 03:01:14 1995 Path: ashpoly!cascade!brgate!saturno!clari!mduarte From: mduarte@clari.net (Marta Duarte) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May16.030114.1507@clari.net> Date: Tue, 16 May 1995 03:01:14 GMT References: <1995May13.115914.1663@inria.fr> <1995May15.084114.5020@illinois.edu> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995May15.084114.5020@illinois.edu>, bsmirnov@illinois.edu (Bruno Smirnov) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. > Unsubscribe me from this list! (Wait, this is Usenet, never mind). On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- === Marta Duarte === Dept of Electrical Engineering, ClariNet Communications Corp "Row 14. No joke." From jkarlsson@clari.net Wed May 17 16:54:14 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!clari!jkarlsson From: jkarlsson@clari.net (Julien Karlsson) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May17.165414.1422@clari.net> Date: Wed, 17 May 1995 16:54:14 GMT References: <1995May13.115914.1663@inria.fr> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995May13.115914.1663@inria.fr>, bandersson@inria.fr (Bruno Andersson) 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! -- Julien Karlsson *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0