From lokonkwo@cam.ac.uk Wed Apr 10 16:41:22 1996 Path: ashpoly!cascade!mxgate!coyoacan!cam!lokonkwo From: lokonkwo@cam.ac.uk (Liam Okonkwo) Newsgroups: comp.dsp Subject: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Apr10.164122.2481@cam.ac.uk> Date: Wed, 10 Apr 1996 16:41:22 GMT Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 10 Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Liam Okonkwo Tape trading list upon request. SASE required for international mail. From mramirez@titech.ac.jp Thu Apr 11 12:31:22 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!titech!mramirez From: mramirez@titech.ac.jp (Marisol Ramírez) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Apr11.123122.3303@titech.ac.jp> Date: Thu, 11 Apr 1996 12:31:22 GMT References: <1996Apr10.164122.2481@cam.ac.uk> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Apr10.164122.2481@cam.ac.uk>, lokonkwo@cam.ac.uk (Liam Okonkwo) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. > The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Marisol Ramírez *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0 From ggonzalez@stanford.edu Sat Apr 13 09:43:22 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!stanford!ggonzalez From: ggonzalez@stanford.edu (Graham González) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Apr13.094322.6107@stanford.edu> Date: Sat, 13 Apr 1996 09:43:22 GMT References: <1996Apr10.164122.2481@cam.ac.uk> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Apr10.164122.2481@cam.ac.uk>, lokonkwo@cam.ac.uk (Liam Okonkwo) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Graham González Hayes Optima 288 @ 19,200 bps "There are 14 nodes and only 10 countries. Count again." From lbrennan@earthlink.net Sat Apr 13 20:48:22 1996 Path: ashpoly!cascade!transat!ukc!fennimore!earthlink!lbrennan From: lbrennan@earthlink.net (Lisa Brennan) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Apr13.204822.7463@earthlink.net> Date: Sat, 13 Apr 1996 20:48:22 GMT References: <1996Apr10.164122.2481@cam.ac.uk> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1996Apr10.164122.2481@cam.ac.uk>, lokonkwo@cam.ac.uk (Liam Okonkwo) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Lisa Brennan -- EarthLink Network "5 sigma is a discovery. 7 is a question." From jjohansson@kth.se Sun Apr 14 04:08:22 1996 Path: ashpoly!cascade!bigsur!kth!jjohansson From: jjohansson@kth.se (Ji-woo Johansson) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Apr14.040822.9335@kth.se> Date: Sun, 14 Apr 1996 04:08:22 GMT References: <1996Apr10.164122.2481@cam.ac.uk> <1996Apr13.094322.6107@stanford.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Apr13.094322.6107@stanford.edu>, ggonzalez@stanford.edu (Graham González) 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. -- Ji-woo Johansson Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm. ------------------------------------------------------------