From aschneider@utexas.edu Thu Nov 17 23:19:05 1994 Path: ashpoly!cascade!transat!ukc!fennimore!utexas!aschneider From: aschneider@utexas.edu (Anton Schneider) Newsgroups: comp.dsp Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Nov17.231905.2749@utexas.edu> Date: Thu, 17 Nov 1994 23:19:05 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] 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 payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- === Anton Schneider === Dept of Electrical Engineering, University of Texas at Austin "In theory there is no difference between theory and practice." From lhernandez@cern.ch Fri Nov 18 02:06:05 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!cern!lhernandez From: lhernandez@cern.ch (Lucia Hernández) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Nov18.020605.8121@cern.ch> Date: Fri, 18 Nov 1994 02:06:05 GMT References: <1994Nov17.231905.2749@utexas.edu> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Nov17.231905.2749@utexas.edu>, aschneider@utexas.edu (Anton Schneider) 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. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Lucia Hernández -- European Laboratory for Particle Physics, Geneva "In theory there is no difference between theory and practice." From msuzuki@ox.ac.uk Sat Nov 19 19:12:05 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!ox!msuzuki From: msuzuki@ox.ac.uk (Morag Suzuki) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Nov19.191205.2759@ox.ac.uk> Date: Sat, 19 Nov 1994 19:12:05 GMT References: <1994Nov17.231905.2749@utexas.edu> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Nov17.231905.2749@utexas.edu>, aschneider@utexas.edu (Anton Schneider) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Morag Suzuki *PLONK* filter active for trolls. Atari Falcon 030 - NetBSD 1.0 From mkuznetsov@inria.fr Mon Nov 21 01:18:05 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!inria!mkuznetsov From: mkuznetsov@inria.fr (Matthias Kuznetsov) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Nov21.011805.2485@inria.fr> Date: Mon, 21 Nov 1994 01:18:05 GMT References: <1994Nov17.231905.2749@utexas.edu> <1994Nov18.020605.8121@cern.ch> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Nov18.020605.8121@cern.ch>, lhernandez@cern.ch (Lucia Hernández) writes: > A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Matthias Kuznetsov "In theory there is no difference between theory and practice." 486DX4/100 (FreeBSD 2.0.5) / TOS 4.04