From bchoi@mindspring.com Tue Dec 10 13:43:55 1996 Path: ashpoly!cascade!brgate!saturno!mindspring!bchoi From: bchoi@mindspring.com (Bill Choi) Newsgroups: comp.dsp Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Dec10.134355.3450@mindspring.com> Date: Tue, 10 Dec 1996 13:43:55 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- Bill Choi Hayes Optima 288 @ 9600 Telebit bps "Hardware is temporary. The signal survives." From bsmirnov@berkeley.edu Thu Dec 12 06:58:55 1996 Path: ashpoly!cascade!bigsur!berkeley!bsmirnov From: bsmirnov@berkeley.edu (Brian Smirnov) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Dec12.065855.3284@berkeley.edu> Date: Thu, 12 Dec 1996 06:58:55 GMT References: <1996Dec10.134355.3450@mindspring.com> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Dec10.134355.3450@mindspring.com>, bchoi@mindspring.com (Bill Choi) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Brian Smirnov *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0