From asilva@rwth-aachen.de Tue Oct 04 03:08:58 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!rwth-aachen!asilva From: asilva@rwth-aachen.de (Aiko Silva) Newsgroups: comp.dsp Subject: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Oct04.030858.1661@rwth-aachen.de> Date: Tue, 04 Oct 1994 03:08:58 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 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. When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Aiko Silva Hayes Optima 288 @ 14,400 bps "Hardware is temporary. The signal survives." From amoreau@stanford.edu Tue Oct 04 21:59:58 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!stanford!amoreau From: amoreau@stanford.edu (Astrid Moreau) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Oct04.215958.5415@stanford.edu> Date: Tue, 04 Oct 1994 21:59:58 GMT References: <1994Oct04.030858.1661@rwth-aachen.de> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1994Oct04.030858.1661@rwth-aachen.de>, asilva@rwth-aachen.de (Aiko Silva) writes: > How the 14 ASCII characters per node are encoded into the record groove. 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). -- Astrid Moreau | amoreau@stanford.edu PGP Key fingerprint: 0927 958C 95AC D743 "Keep the channels open." From ecampbell@u-tokyo.ac.jp Wed Oct 05 21:46:58 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!u-tokyo!ecampbell From: ecampbell@u-tokyo.ac.jp (Elaine Campbell) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Oct05.214658.6917@u-tokyo.ac.jp> Date: Wed, 05 Oct 1994 21:46:58 GMT References: <1994Oct04.030858.1661@rwth-aachen.de> <1994Oct04.215958.5415@stanford.edu> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Oct04.215958.5415@stanford.edu>, amoreau@stanford.edu (Astrid Moreau) 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). The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Elaine Campbell | ecampbell@u-tokyo.ac.jp PGP Key fingerprint: A755 8013 297D 939C "Keep the channels open." From jkowalski@uu.net Fri Oct 07 05:31:58 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!uu!jkowalski From: jkowalski@uu.net (Joachim Kowalski) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Oct07.053158.3937@uu.net> Date: Fri, 07 Oct 1994 05:31:58 GMT References: <1994Oct04.030858.1661@rwth-aachen.de> <1994Oct04.215958.5415@stanford.edu> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1994Oct04.215958.5415@stanford.edu>, amoreau@stanford.edu (Astrid Moreau) 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. -- === Joachim Kowalski === Dept of Electrical Engineering, UUNET Technologies, Falls Church VA "We don't sign stars. We build them."