From tduarte@uu.net Fri Nov 08 23:32:51 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uu!tduarte From: tduarte@uu.net (Takeshi Duarte) Newsgroups: comp.dsp Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Nov08.233251.8059@uu.net> Date: Fri, 08 Nov 1996 23:32:51 GMT Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: Netscape 1.1N Lines: 11 Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. 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. -- === Takeshi Duarte === Dept of Electrical Engineering, UUNET Technologies, Falls Church VA "The carrier frequency does not drift by accident." From tsokolov@delphi.com Sat Nov 09 09:45:51 1996 Path: ashpoly!cascade!brgate!saturno!delphi!tsokolov From: tsokolov@delphi.com (Takeshi Sokolov) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Nov09.094551.9191@delphi.com> Date: Sat, 09 Nov 1996 09:45:51 GMT References: <1996Nov08.233251.8059@uu.net> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Nov08.233251.8059@uu.net>, tduarte@uu.net (Takeshi Duarte) 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. -- Takeshi Sokolov Hayes Optima 288 @ 9600 Telebit bps "There are 14 nodes and only 10 countries. Count again." From rlindqvist@illinois.edu Sun Nov 10 20:59:51 1996 Path: ashpoly!cascade!bigsur!illinois!rlindqvist From: rlindqvist@illinois.edu (Renata Lindqvist) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Nov10.205951.9367@illinois.edu> Date: Sun, 10 Nov 1996 20:59:51 GMT References: <1996Nov08.233251.8059@uu.net> <1996Nov09.094551.9191@delphi.com> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Nov09.094551.9191@delphi.com>, tsokolov@delphi.com (Takeshi Sokolov) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Renata Lindqvist Opinions expressed are solely my own and not those of University of Illinois Urbana-Champaign. ------------------------------------------------------------