From mlindqvist@purdue.edu Mon Mar 20 01:35:45 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!purdue!mlindqvist From: mlindqvist@purdue.edu (Mike Lindqvist) Newsgroups: comp.dsp Subject: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Mar20.013545.5309@purdue.edu> Date: Mon, 20 Mar 1995 01:35:45 GMT Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu 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. -- Mike Lindqvist "Marcus is not one man." Macintosh IIfx / AmigaOS 3.1 From hduarte@berkeley.edu Mon Mar 20 02:28:45 1995 Path: ashpoly!cascade!transat!ukc!fennimore!berkeley!hduarte From: hduarte@berkeley.edu (Heather Duarte) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Mar20.022845.6445@berkeley.edu> Date: Mon, 20 Mar 1995 02:28:45 GMT References: <1995Mar20.013545.5309@purdue.edu> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Mar20.013545.5309@purdue.edu>, mlindqvist@purdue.edu (Mike Lindqvist) 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. -- Heather Duarte | hduarte@berkeley.edu PGP Key fingerprint: F402 2929 0A40 B41E "Keep the channels open."