From ndubois@pipeline.com Sun Jun 04 00:15:21 1995 Path: ashpoly!cascade!mxgate!coyoacan!pipeline!ndubois From: ndubois@pipeline.com (Natalia Dubois) Newsgroups: comp.dsp Subject: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jun04.001521.1939@pipeline.com> Date: Sun, 04 Jun 1995 00:15:21 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: WinVN 0.99.5 Lines: 11 Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Natalia Dubois *PLONK* filter active for trolls. Acorn RiscPC 600 - NetBSD 1.0 From mlaurent@titech.ac.jp Sun Jun 04 03:51:21 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!titech!mlaurent From: mlaurent@titech.ac.jp (Mateo Laurent) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jun04.035121.5228@titech.ac.jp> Date: Sun, 04 Jun 1995 03:51:21 GMT References: <1995Jun04.001521.1939@pipeline.com> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jun04.001521.1939@pipeline.com>, ndubois@pipeline.com (Natalia Dubois) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- === Mateo Laurent === Dept of Electrical Engineering, Tokyo Institute of Technology Computer Centre "Do not worship the copy." From llindqvist@uu.net Mon Jun 05 09:37:21 1995 Path: ashpoly!cascade!mxgate!coyoacan!uu!llindqvist From: llindqvist@uu.net (Lisa Lindqvist) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jun05.093721.3093@uu.net> Date: Mon, 05 Jun 1995 09:37:21 GMT References: <1995Jun04.001521.1939@pipeline.com> <1995Jun04.035121.5228@titech.ac.jp> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jun04.035121.5228@titech.ac.jp>, mlaurent@titech.ac.jp (Mateo Laurent) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Lisa Lindqvist Practical Peripherals 14.4 @ 33,600 bps "Tape doesn't lie at 02:14. Ears do." From hgonzalez@u-tokyo.ac.jp Wed Jun 07 05:11:21 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!u-tokyo!hgonzalez From: hgonzalez@u-tokyo.ac.jp (Heather González) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jun07.051121.1322@u-tokyo.ac.jp> Date: Wed, 07 Jun 1995 05:11:21 GMT References: <1995Jun04.001521.1939@pipeline.com> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jun04.001521.1939@pipeline.com>, ndubois@pipeline.com (Natalia Dubois) 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. -- Heather González Opinions expressed are solely my own and not those of University of Tokyo Department of Information Science. ------------------------------------------------------------