From sfischer@berkeley.edu Wed Nov 15 18:41:08 1995 Path: ashpoly!cascade!transat!ukc!fennimore!berkeley!sfischer From: sfischer@berkeley.edu (Sven Fischer) Newsgroups: comp.dsp Subject: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Nov15.184108.9011@berkeley.edu> Date: Wed, 15 Nov 1995 18:41:08 GMT Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Sven Fischer Opinions expressed are solely my own and not those of UC Berkeley Department of EECS. ------------------------------------------------------------ From hkim@netcom.com Fri Nov 17 15:24:08 1995 Path: ashpoly!cascade!brgate!saturno!netcom!hkim From: hkim@netcom.com (Heather Kim) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Nov17.152408.9545@netcom.com> Date: Fri, 17 Nov 1995 15:24:08 GMT References: <1995Nov15.184108.9011@berkeley.edu> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Nov15.184108.9011@berkeley.edu>, sfischer@berkeley.edu (Sven Fischer) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Heather Kim | hkim@netcom.com PGP Key fingerprint: 33A9 5AD7 5416 BC9B "Keep the channels open." From gkowalski@inria.fr Sat Nov 18 04:43:08 1995 Path: ashpoly!cascade!mxgate!coyoacan!inria!gkowalski From: gkowalski@inria.fr (Graham Kowalski) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Nov18.044308.8577@inria.fr> Date: Sat, 18 Nov 1995 04:43:08 GMT References: <1995Nov15.184108.9011@berkeley.edu> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Nov15.184108.9011@berkeley.edu>, sfischer@berkeley.edu (Sven Fischer) 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. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Graham Kowalski -- INRIA Rocquencourt "The hatch is open. Is anyone listening?" From mlee@uu.net Mon Nov 20 04:59:08 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!uu!mlee From: mlee@uu.net (Min-jun Lee) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Nov20.045908.8611@uu.net> Date: Mon, 20 Nov 1995 04:59:08 GMT References: <1995Nov15.184108.9011@berkeley.edu> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Nov15.184108.9011@berkeley.edu>, sfischer@berkeley.edu (Sven Fischer) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Min-jun Lee Opinions expressed are solely my own and not those of UUNET Technologies, Falls Church VA. ------------------------------------------------------------