From rkuznetsov@inria.fr Mon Jul 08 07:13:02 1996 Path: ashpoly!cascade!mxgate!coyoacan!inria!rkuznetsov From: rkuznetsov@inria.fr (Raj Kuznetsov) Newsgroups: comp.dsp Subject: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jul08.071302.6699@inria.fr> Date: Mon, 08 Jul 1996 07:13:02 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr 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. Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword. -- Raj Kuznetsov Opinions expressed are solely my own and not those of INRIA Rocquencourt. ------------------------------------------------------------ From hrodriguez@uni-hamburg.de Tue Jul 09 15:58:02 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!uni-hamburg!hrodriguez From: hrodriguez@uni-hamburg.de (Hana Rodríguez) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jul09.155802.9350@uni-hamburg.de> Date: Tue, 09 Jul 1996 15:58:02 GMT References: <1996Jul08.071302.6699@inria.fr> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Jul08.071302.6699@inria.fr>, rkuznetsov@inria.fr (Raj Kuznetsov) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Hana Rodríguez | hrodriguez@uni-hamburg.de PGP Key fingerprint: 65CF EA09 9728 8BCE "Keep the channels open." From ehughes@purdue.edu Thu Jul 11 07:08:02 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!purdue!ehughes From: ehughes@purdue.edu (Emi Hughes) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jul11.070802.9491@purdue.edu> Date: Thu, 11 Jul 1996 07:08:02 GMT References: <1996Jul08.071302.6699@inria.fr> <1996Jul09.155802.9350@uni-hamburg.de> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Jul09.155802.9350@uni-hamburg.de>, hrodriguez@uni-hamburg.de (Hana Rodríguez) writes: > Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Emi Hughes *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From llarsson@mindspring.com Fri Jul 12 21:03:02 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!mindspring!llarsson From: llarsson@mindspring.com (Lars Larsson) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jul12.210302.4864@mindspring.com> Date: Fri, 12 Jul 1996 21:03:02 GMT References: <1996Jul08.071302.6699@inria.fr> <1996Jul09.155802.9350@uni-hamburg.de> <1996Jul11.070802.9491@purdue.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 8 In article <1996Jul11.070802.9491@purdue.edu>, ehughes@purdue.edu (Emi Hughes) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Lars Larsson -- MindSpring Enterprises "Row 14. No joke." From alindqvist@cmu.edu Fri Jul 12 22:14:02 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!cmu!alindqvist From: alindqvist@cmu.edu (Aiko Lindqvist) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jul12.221402.5021@cmu.edu> Date: Fri, 12 Jul 1996 22:14:02 GMT References: <1996Jul08.071302.6699@inria.fr> <1996Jul09.155802.9350@uni-hamburg.de> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N Lines: 11 In article <1996Jul09.155802.9350@uni-hamburg.de>, hrodriguez@uni-hamburg.de (Hana Rodríguez) writes: > Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Aiko Lindqvist Opinions expressed are solely my own and not those of Carnegie Mellon University School of CS. ------------------------------------------------------------