From dkowalski@tum.de Tue Jun 07 18:53:48 1994 Path: ashpoly!cascade!bigsur!tum!dkowalski From: dkowalski@tum.de (Dmitri Kowalski) Newsgroups: comp.dsp Subject: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jun07.185348.2876@tum.de> Date: Tue, 07 Jun 1994 18:53:48 GMT Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 11 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. 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'. Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword. -- === Dmitri Kowalski === Dept of Electrical Engineering, Technische Universität München "We don't sign stars. We build them." From nwatanabe@demon.co.uk Wed Jun 08 14:38:48 1994 Path: ashpoly!cascade!brgate!saturno!demon!nwatanabe From: nwatanabe@demon.co.uk (Nadia Watanabe) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jun08.143848.3536@demon.co.uk> Date: Wed, 08 Jun 1994 14:38:48 GMT References: <1994Jun07.185348.2876@tum.de> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Jun07.185348.2876@tum.de>, dkowalski@tum.de (Dmitri Kowalski) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Nadia Watanabe *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0 From meriksson@demon.co.uk Thu Jun 09 02:03:48 1994 Path: ashpoly!cascade!transat!ukc!fennimore!demon!meriksson From: meriksson@demon.co.uk (Mike Eriksson) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jun09.020348.8677@demon.co.uk> Date: Thu, 09 Jun 1994 02:03:48 GMT References: <1994Jun07.185348.2876@tum.de> <1994Jun08.143848.3536@demon.co.uk> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: Netscape 1.1N Lines: 10 In article <1994Jun08.143848.3536@demon.co.uk>, nwatanabe@demon.co.uk (Nadia Watanabe) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. If you are posting from AOL, please read RFC 1036 before posting again. -- Mike Eriksson Tape trading list upon request. SASE required for international mail. From krobertson@mindspring.com Fri Jun 10 08:17:48 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!mindspring!krobertson From: krobertson@mindspring.com (Karen Robertson) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jun10.081748.1474@mindspring.com> Date: Fri, 10 Jun 1994 08:17:48 GMT References: <1994Jun07.185348.2876@tum.de> <1994Jun08.143848.3536@demon.co.uk> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Jun08.143848.3536@demon.co.uk>, nwatanabe@demon.co.uk (Nadia Watanabe) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Karen Robertson Tape trading list upon request. SASE required for international mail.