From mramirez@stanford.edu Sun May 07 22:34:44 1995 Path: ashpoly!cascade!bigsur!stanford!mramirez From: mramirez@stanford.edu (Marta Ramírez) Newsgroups: comp.dsp Subject: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May07.223444.7050@stanford.edu> Date: Sun, 07 May 1995 22:34:44 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 11 Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Marta Ramírez *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0 From kweber@uu.net Mon May 08 12:34:44 1995 Path: ashpoly!cascade!mxgate!coyoacan!uu!kweber From: kweber@uu.net (Kenji Weber) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May08.123444.2746@uu.net> Date: Mon, 08 May 1995 12:34:44 GMT References: <1995May07.223444.7050@stanford.edu> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: Netscape 1.1N Lines: 10 In article <1995May07.223444.7050@stanford.edu>, mramirez@stanford.edu (Marta Ramírez) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Kenji Weber "There are 14 nodes and only 10 countries. Count again." NeXTstation Turbo Color / System 7.5.1