From tfournier@unam.mx Wed Jun 01 10:55:21 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!unam!tfournier From: tfournier@unam.mx (Tomas Fournier) Newsgroups: comp.dsp Subject: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jun01.105521.5383@unam.mx> Date: Wed, 01 Jun 1994 10:55:21 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 10 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). Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword. -- Tomas Fournier Tape trading list upon request. SASE required for international mail. From tsokolov@stanford.edu Thu Jun 02 17:05:21 1994 Path: ashpoly!cascade!transat!ukc!fennimore!stanford!tsokolov From: tsokolov@stanford.edu (Tobias Sokolov) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jun02.170521.1667@stanford.edu> Date: Thu, 02 Jun 1994 17:05:21 GMT References: <1994Jun01.105521.5383@unam.mx> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Jun01.105521.5383@unam.mx>, tfournier@unam.mx (Tomas Fournier) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Tobias Sokolov *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0 From glee@uni-hamburg.de Sat Jun 04 09:35:21 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!uni-hamburg!glee From: glee@uni-hamburg.de (Graham Lee) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jun04.093521.9132@uni-hamburg.de> Date: Sat, 04 Jun 1994 09:35:21 GMT References: <1994Jun01.105521.5383@unam.mx> <1994Jun02.170521.1667@stanford.edu> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 11 In article <1994Jun02.170521.1667@stanford.edu>, tsokolov@stanford.edu (Tobias Sokolov) writes: > Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Graham Lee Opinions expressed are solely my own and not those of Universität Hamburg Fachbereich Informatik. ------------------------------------------------------------ From trobertson@titech.ac.jp Sat Jun 04 21:20:21 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!titech!trobertson From: trobertson@titech.ac.jp (Tyler Robertson) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jun04.212021.4337@titech.ac.jp> Date: Sat, 04 Jun 1994 21:20:21 GMT References: <1994Jun01.105521.5383@unam.mx> <1994Jun02.170521.1667@stanford.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Jun02.170521.1667@stanford.edu>, tsokolov@stanford.edu (Tobias Sokolov) writes: > Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- === Tyler Robertson === Dept of Electrical Engineering, Tokyo Institute of Technology Computer Centre "A soul is not exclusive to biology."