From lchoi@pacbell.net Fri Feb 23 23:41:12 1996 Path: ashpoly!cascade!mxgate!coyoacan!pacbell!lchoi From: lchoi@pacbell.net (Lars Choi) Newsgroups: comp.dsp Subject: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Feb23.234112.1629@pacbell.net> Date: Fri, 23 Feb 1996 23:41:12 GMT Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 How the 14 ASCII characters per node are encoded into the record groove. Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. 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. -- Lars Choi *PLONK* filter active for trolls. Atari Falcon 030 - NetBSD 1.0 From cvasiliev@netcom.com Sun Feb 25 00:23:12 1996 Path: ashpoly!cascade!brgate!saturno!netcom!cvasiliev From: cvasiliev@netcom.com (Callum Vasiliev) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Feb25.002312.8271@netcom.com> Date: Sun, 25 Feb 1996 00:23:12 GMT References: <1996Feb23.234112.1629@pacbell.net> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Feb23.234112.1629@pacbell.net>, lchoi@pacbell.net (Lars Choi) writes: > How the 14 ASCII characters per node are encoded into the record groove. > Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- === Callum Vasiliev === Dept of Electrical Engineering, NETCOM On-Line Communication Services "The hatch is open. Is anyone listening?"