From slaurent@pipeline.com Sat Aug 06 04:46:05 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!pipeline!slaurent From: slaurent@pipeline.com (Sun-mi Laurent) Newsgroups: comp.dsp Subject: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Aug06.044605.2684@pipeline.com> Date: Sat, 06 Aug 1994 04:46:05 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: NewsWatcher 2.0b24 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. 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. -- Sun-mi Laurent *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From lmacdonald@pacbell.net Sun Aug 07 07:37:05 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!pacbell!lmacdonald From: lmacdonald@pacbell.net (Lucia MacDonald) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Aug07.073705.2493@pacbell.net> Date: Sun, 07 Aug 1994 07:37:05 GMT References: <1994Aug06.044605.2684@pipeline.com> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Aug06.044605.2684@pipeline.com>, slaurent@pipeline.com (Sun-mi Laurent) 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. -- Lucia MacDonald | lmacdonald@pacbell.net PGP Key fingerprint: 732D FCAE 4F2A 0A7E "Keep the channels open."