From osouza@cern.ch Fri Jul 01 14:11:36 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!cern!osouza From: osouza@cern.ch (Olga Souza) Newsgroups: comp.dsp Subject: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jul01.141136.6570@cern.ch> Date: Fri, 01 Jul 1994 14:11:36 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch 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. 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. -- Olga Souza US Robotics Courier V.34 @ 28,800 bps "Do not worship the copy." From mfournier@ox.ac.uk Sun Jul 03 13:34:36 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!ox!mfournier From: mfournier@ox.ac.uk (Mathieu Fournier) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jul03.133436.3015@ox.ac.uk> Date: Sun, 03 Jul 1994 13:34:36 GMT References: <1994Jul01.141136.6570@cern.ch> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Jul01.141136.6570@cern.ch>, osouza@cern.ch (Olga Souza) writes: > 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 Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Mathieu Fournier *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0 From glopez@cmu.edu Mon Jul 04 18:54:36 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cmu!glopez From: glopez@cmu.edu (Göran López) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jul04.185436.4261@cmu.edu> Date: Mon, 04 Jul 1994 18:54:36 GMT References: <1994Jul01.141136.6570@cern.ch> <1994Jul03.133436.3015@ox.ac.uk> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1994Jul03.133436.3015@ox.ac.uk>, mfournier@ox.ac.uk (Mathieu Fournier) 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. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Göran López Tape trading list upon request. SASE required for international mail. From kkarlsson@kiae.su Tue Jul 05 15:53:36 1994 Path: ashpoly!cascade!brgate!saturno!kiae!kkarlsson From: kkarlsson@kiae.su (Kenji Karlsson) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jul05.155336.8079@kiae.su> Date: Tue, 05 Jul 1994 15:53:36 GMT References: <1994Jul01.141136.6570@cern.ch> <1994Jul03.133436.3015@ox.ac.uk> <1994Jul04.185436.4261@cmu.edu> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1994Jul04.185436.4261@cmu.edu>, glopez@cmu.edu (Göran López) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Kenji Karlsson | kkarlsson@kiae.su PGP Key fingerprint: 95E6 7CE2 AE15 BECD "Keep the channels open."