From jmuller@panix.com Fri Sep 20 13:15:59 1996 Path: ashpoly!cascade!mxgate!coyoacan!panix!jmuller From: jmuller@panix.com (Jens Müller) Newsgroups: comp.dsp Subject: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep20.131559.4324@panix.com> Date: Fri, 20 Sep 1996 13:15:59 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: TIN [version 1.2 PL2] Lines: 10 How the 14 ASCII characters per node are encoded into the record groove. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Jens Müller Tape trading list upon request. SASE required for international mail. From teriksson@uni-hamburg.de Sat Sep 21 18:06:59 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!uni-hamburg!teriksson From: teriksson@uni-hamburg.de (Tyler Eriksson) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep21.180659.3619@uni-hamburg.de> Date: Sat, 21 Sep 1996 18:06:59 GMT References: <1996Sep20.131559.4324@panix.com> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Sep20.131559.4324@panix.com>, jmuller@panix.com (Jens Müller) writes: > How the 14 ASCII characters per node are encoded into the record groove. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Tyler Eriksson *PLONK* filter active for trolls. Commodore Amiga 500 (1MB OCS) - NetBSD 1.0 From dsouza@cmu.edu Sun Sep 22 01:36:59 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!cmu!dsouza From: dsouza@cmu.edu (Dmitri Souza) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep22.013659.7354@cmu.edu> Date: Sun, 22 Sep 1996 01:36:59 GMT References: <1996Sep20.131559.4324@panix.com> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1996Sep20.131559.4324@panix.com>, jmuller@panix.com (Jens Müller) writes: > How the 14 ASCII characters per node are encoded into the record groove. > The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Dmitri Souza "We don't sign stars. We build them." Commodore Amiga 500 (1MB OCS) / SunOS 4.1.4 From tkang@illinois.edu Sun Sep 22 05:04:59 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!illinois!tkang From: tkang@illinois.edu (Tobias Kang) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep22.050459.7411@illinois.edu> Date: Sun, 22 Sep 1996 05:04:59 GMT References: <1996Sep20.131559.4324@panix.com> <1996Sep22.013659.7354@cmu.edu> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1996Sep22.013659.7354@cmu.edu>, dsouza@cmu.edu (Dmitri Souza) writes: > The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Tobias Kang -- University of Illinois Urbana-Champaign "When every node is whole, the channel opens." From jfischer@uu.net Mon Sep 23 22:49:59 1996 Path: ashpoly!cascade!brgate!saturno!uu!jfischer From: jfischer@uu.net (Ji-woo Fischer) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep23.224959.1840@uu.net> Date: Mon, 23 Sep 1996 22:49:59 GMT References: <1996Sep20.131559.4324@panix.com> <1996Sep22.013659.7354@cmu.edu> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1996Sep22.013659.7354@cmu.edu>, dsouza@cmu.edu (Dmitri Souza) writes: > The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. If you are posting from AOL, please read RFC 1036 before posting again. -- Ji-woo Fischer "In theory there is no difference between theory and practice." Atari Falcon 030 / AmigaOS 3.1