From aoliveira@stanford.edu Fri Jan 21 18:04:07 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!stanford!aoliveira From: aoliveira@stanford.edu (Astrid Oliveira) Newsgroups: comp.dsp Subject: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jan21.180407.2622@stanford.edu> Date: Fri, 21 Jan 1994 18:04:07 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 10 How the 14 ASCII characters per node are encoded into the record groove. Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- Astrid Oliveira -- Stanford University Computer Systems Lab "5 sigma is a discovery. 7 is a question." From rmartinez@uu.net Sun Jan 23 13:23:07 1994 Path: ashpoly!cascade!brgate!saturno!uu!rmartinez From: rmartinez@uu.net (Renata Martínez) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jan23.132307.6742@uu.net> Date: Sun, 23 Jan 1994 13:23:07 GMT References: <1994Jan21.180407.2622@stanford.edu> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Jan21.180407.2622@stanford.edu>, aoliveira@stanford.edu (Astrid Oliveira) writes: > How the 14 ASCII characters per node are encoded into the record groove. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Renata Martínez US Robotics Courier V.34 @ 14,400 bps "In theory there is no difference between theory and practice."