From sreyes@earthlink.net Wed Feb 08 00:13:39 1995 Path: ashpoly!cascade!bigsur!earthlink!sreyes From: sreyes@earthlink.net (Seo-yeon Reyes) Newsgroups: comp.dsp Subject: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb08.001339.8394@earthlink.net> Date: Wed, 08 Feb 1995 00:13:39 GMT Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: Netscape 1.1N Lines: 11 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. 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. -- Seo-yeon Reyes "There are 14 nodes and only 10 countries. Count again." Commodore Amiga 500 (1MB OCS) / AmigaOS 3.1 From spark@demon.co.uk Wed Feb 08 13:12:39 1995 Path: ashpoly!cascade!transat!ukc!fennimore!demon!spark From: spark@demon.co.uk (Steve Park) Newsgroups: comp.dsp Subject: Re: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb08.131239.2385@demon.co.uk> Date: Wed, 08 Feb 1995 13:12:39 GMT References: <1995Feb08.001339.8394@earthlink.net> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Feb08.001339.8394@earthlink.net>, sreyes@earthlink.net (Seo-yeon Reyes) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Steve Park -- Demon Internet Services UK "Tape doesn't lie at 02:14. Ears do."