From bmoreno@cam.ac.uk Tue Oct 04 03:07:01 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cam!bmoreno From: bmoreno@cam.ac.uk (Brian Moreno) Newsgroups: comp.dsp Subject: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Oct04.030701.2332@cam.ac.uk> Date: Tue, 04 Oct 1994 03:07:01 GMT Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 10 How the 14 ASCII characters per node are encoded into the record groove. 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. -- Brian Moreno Tape trading list upon request. SASE required for international mail. From anakamura@demon.co.uk Thu Oct 06 00:36:01 1994 Path: ashpoly!cascade!bigsur!demon!anakamura From: anakamura@demon.co.uk (Andrei Nakamura) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Oct06.003601.8543@demon.co.uk> Date: Thu, 06 Oct 1994 00:36:01 GMT References: <1994Oct04.030701.2332@cam.ac.uk> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Oct04.030701.2332@cam.ac.uk>, bmoreno@cam.ac.uk (Brian Moreno) writes: > How the 14 ASCII characters per node are encoded into the record groove. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Andrei Nakamura *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0 From snovak@inria.fr Fri Oct 07 18:23:01 1994 Path: ashpoly!cascade!transat!ukc!fennimore!inria!snovak From: snovak@inria.fr (Sven Novak) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Oct07.182301.1493@inria.fr> Date: Fri, 07 Oct 1994 18:23:01 GMT References: <1994Oct04.030701.2332@cam.ac.uk> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1994Oct04.030701.2332@cam.ac.uk>, bmoreno@cam.ac.uk (Brian Moreno) writes: > How the 14 ASCII characters per node are encoded into the record groove. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- === Sven Novak === Dept of Electrical Engineering, INRIA Rocquencourt "They will send a copy in my place."