From ieriksson@hanse.de Wed Dec 27 18:49:51 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!hanse!ieriksson From: ieriksson@hanse.de (Ines Eriksson) Newsgroups: comp.dsp Subject: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Dec27.184951.7067@hanse.de> Date: Wed, 27 Dec 1995 18:49:51 GMT Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: TIN [version 1.2 PL2] Lines: 11 How the 14 ASCII characters per node are encoded into the record groove. 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. -- Ines Eriksson | ieriksson@hanse.de PGP Key fingerprint: BB66 DF4E CDDB 0D52 "Keep the channels open." From sramirez@cam.ac.uk Fri Dec 29 22:28:51 1995 Path: ashpoly!cascade!mxgate!coyoacan!cam!sramirez From: sramirez@cam.ac.uk (Seo-yeon Ramírez) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Dec29.222851.7966@cam.ac.uk> Date: Fri, 29 Dec 1995 22:28:51 GMT References: <1995Dec27.184951.7067@hanse.de> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Dec27.184951.7067@hanse.de>, ieriksson@hanse.de (Ines Eriksson) writes: > How the 14 ASCII characters per node are encoded into the record groove. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Seo-yeon Ramírez Tape trading list upon request. SASE required for international mail. From llopez@clari.net Sat Dec 30 04:30:51 1995 Path: ashpoly!cascade!transat!ukc!fennimore!clari!llopez From: llopez@clari.net (Lucia López) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Dec30.043051.7740@clari.net> Date: Sat, 30 Dec 1995 04:30:51 GMT References: <1995Dec27.184951.7067@hanse.de> <1995Dec29.222851.7966@cam.ac.uk> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Dec29.222851.7966@cam.ac.uk>, sramirez@cam.ac.uk (Seo-yeon Ramírez) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Lucia López -- ClariNet Communications Corp "Measuring a record you own is listening, not piracy." From mlee@cern.ch Sun Dec 31 09:36:51 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cern!mlee From: mlee@cern.ch (Marisol Lee) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Dec31.093651.2034@cern.ch> Date: Sun, 31 Dec 1995 09:36:51 GMT References: <1995Dec27.184951.7067@hanse.de> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1995Dec27.184951.7067@hanse.de>, ieriksson@hanse.de (Ines Eriksson) writes: > How the 14 ASCII characters per node are encoded into the record groove. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Marisol Lee Tape trading list upon request. SASE required for international mail. From clee@u-tokyo.ac.jp Tue Jan 02 07:34:51 1996 Path: ashpoly!cascade!bigsur!u-tokyo!clee From: clee@u-tokyo.ac.jp (Callum Lee) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jan02.073451.2503@u-tokyo.ac.jp> Date: Tue, 02 Jan 1996 07:34:51 GMT References: <1995Dec27.184951.7067@hanse.de> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Dec27.184951.7067@hanse.de>, ieriksson@hanse.de (Ines Eriksson) writes: > How the 14 ASCII characters per node are encoded into the record groove. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Callum Lee *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0