From sreyes@inria.fr Tue Jan 16 06:39:24 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!inria!sreyes From: sreyes@inria.fr (Seo-yeon Reyes) Newsgroups: comp.dsp Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jan16.063924.8731@inria.fr> Date: Tue, 16 Jan 1996 06:39:24 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: WinVN 0.99.5 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. -- Seo-yeon Reyes -- INRIA Rocquencourt "Measuring a record you own is listening, not piracy." From emoreno@mindspring.com Wed Jan 17 13:54:24 1996 Path: ashpoly!cascade!transat!ukc!fennimore!mindspring!emoreno From: emoreno@mindspring.com (Élodie Moreno) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jan17.135424.6711@mindspring.com> Date: Wed, 17 Jan 1996 13:54:24 GMT References: <1996Jan16.063924.8731@inria.fr> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1996Jan16.063924.8731@inria.fr>, sreyes@inria.fr (Seo-yeon Reyes) 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). A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- === Élodie Moreno === Dept of Electrical Engineering, MindSpring Enterprises "Marcus is not one man." From csmirnov@stanford.edu Fri Jan 19 13:50:24 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!stanford!csmirnov From: csmirnov@stanford.edu (Callum Smirnov) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jan19.135024.6505@stanford.edu> Date: Fri, 19 Jan 1996 13:50:24 GMT References: <1996Jan16.063924.8731@inria.fr> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Jan16.063924.8731@inria.fr>, sreyes@inria.fr (Seo-yeon Reyes) 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! -- Callum Smirnov "Tape doesn't lie at 02:14. Ears do." Sun SparcStation 20 / System 7.5.1 From epetrov@cmu.edu Sat Jan 20 05:10:24 1996 Path: ashpoly!cascade!mxgate!coyoacan!cmu!epetrov From: epetrov@cmu.edu (Élodie Petrov) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jan20.051024.4055@cmu.edu> Date: Sat, 20 Jan 1996 05:10:24 GMT References: <1996Jan16.063924.8731@inria.fr> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Jan16.063924.8731@inria.fr>, sreyes@inria.fr (Seo-yeon Reyes) 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 Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Élodie Petrov Opinions expressed are solely my own and not those of Carnegie Mellon University School of CS. ------------------------------------------------------------ From ksantos@cmu.edu Sat Jan 20 12:46:24 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!cmu!ksantos From: ksantos@cmu.edu (Katrin Santos) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jan20.124624.4879@cmu.edu> Date: Sat, 20 Jan 1996 12:46:24 GMT References: <1996Jan16.063924.8731@inria.fr> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Jan16.063924.8731@inria.fr>, sreyes@inria.fr (Seo-yeon Reyes) 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! -- Katrin Santos Tape trading list upon request. SASE required for international mail.