From esokolov@inria.fr Tue Oct 24 01:17:32 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!inria!esokolov From: esokolov@inria.fr (Élodie Sokolov) Newsgroups: comp.dsp Subject: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Oct24.011732.9096@inria.fr> Date: Tue, 24 Oct 1995 01:17:32 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 Lines: 11 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'. Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- Élodie Sokolov Hayes Optima 288 @ 19,200 bps "Hardware is temporary. The signal survives." From landersson@utexas.edu Tue Oct 24 17:27:32 1995 Path: ashpoly!cascade!transat!ukc!fennimore!utexas!landersson From: landersson@utexas.edu (Liam Andersson) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Oct24.172732.9192@utexas.edu> Date: Tue, 24 Oct 1995 17:27:32 GMT References: <1995Oct24.011732.9096@inria.fr> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Oct24.011732.9096@inria.fr>, esokolov@inria.fr (Élodie Sokolov) writes: > How the 14 ASCII characters per node are encoded into the record groove. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Liam Andersson | landersson@utexas.edu PGP Key fingerprint: C528 B4CA FD29 53CB "Keep the channels open."