From emoreno@illinois.edu Fri Jun 21 04:02:02 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!illinois!emoreno From: emoreno@illinois.edu (Elaine Moreno) Newsgroups: comp.dsp Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jun21.040202.9634@illinois.edu> Date: Fri, 21 Jun 1996 04:02:02 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 11 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. 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. Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword. -- Elaine Moreno *PLONK* filter active for trolls. Atari Falcon 030 - NetBSD 1.0 From sgarcia@kth.se Fri Jun 21 21:31:02 1996 Path: ashpoly!cascade!transat!ukc!fennimore!kth!sgarcia From: sgarcia@kth.se (Sun-mi García) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jun21.213102.4719@kth.se> Date: Fri, 21 Jun 1996 21:31:02 GMT References: <1996Jun21.040202.9634@illinois.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Jun21.040202.9634@illinois.edu>, emoreno@illinois.edu (Elaine Moreno) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. > 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. -- Sun-mi García Practical Peripherals 14.4 @ 33,600 bps "Hold for relay." From sivanov@cmu.edu Sun Jun 23 14:17:02 1996 Path: ashpoly!cascade!transat!ukc!fennimore!cmu!sivanov From: sivanov@cmu.edu (Sun-mi Ivanov) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jun23.141702.9490@cmu.edu> Date: Sun, 23 Jun 1996 14:17:02 GMT References: <1996Jun21.040202.9634@illinois.edu> <1996Jun21.213102.4719@kth.se> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Jun21.213102.4719@kth.se>, sgarcia@kth.se (Sun-mi García) 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. -- === Sun-mi Ivanov === Dept of Electrical Engineering, Carnegie Mellon University School of CS "Row 14. No joke." From lbrennan@rwth-aachen.de Mon Jun 24 04:13:02 1996 Path: ashpoly!cascade!transat!ukc!fennimore!rwth-aachen!lbrennan From: lbrennan@rwth-aachen.de (Lucia Brennan) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jun24.041302.8823@rwth-aachen.de> Date: Mon, 24 Jun 1996 04:13:02 GMT References: <1996Jun21.040202.9634@illinois.edu> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Jun21.040202.9634@illinois.edu>, emoreno@illinois.edu (Elaine Moreno) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. > Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Lucia Brennan Opinions expressed are solely my own and not those of RWTH Aachen Informatik. ------------------------------------------------------------ From ischneider@uni-hamburg.de Wed Jun 26 02:59:02 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uni-hamburg!ischneider From: ischneider@uni-hamburg.de (Ines Schneider) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jun26.025902.3753@uni-hamburg.de> Date: Wed, 26 Jun 1996 02:59:02 GMT References: <1996Jun21.040202.9634@illinois.edu> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1996Jun21.040202.9634@illinois.edu>, emoreno@illinois.edu (Elaine Moreno) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. > 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! Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- === Ines Schneider === Dept of Electrical Engineering, Universität Hamburg Fachbereich Informatik "There are 14 nodes and only 10 countries. Count again."