From blaurent@kiae.su Sun Feb 19 09:37:11 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kiae!blaurent From: blaurent@kiae.su (Bill Laurent) Newsgroups: comp.dsp Subject: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb19.093711.6723@kiae.su> Date: Sun, 19 Feb 1995 09:37:11 GMT Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: Netscape 1.1N Lines: 11 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- Bill Laurent US Robotics Courier V.34 @ 28,800 bps "They will send a copy in my place." From ggirard@pipeline.com Tue Feb 21 06:14:11 1995 Path: ashpoly!cascade!brgate!saturno!pipeline!ggirard From: ggirard@pipeline.com (Göran Girard) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb21.061411.3235@pipeline.com> Date: Tue, 21 Feb 1995 06:14:11 GMT References: <1995Feb19.093711.6723@kiae.su> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Feb19.093711.6723@kiae.su>, blaurent@kiae.su (Bill Laurent) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Göran Girard "There are 14 nodes and only 10 countries. Count again." Commodore Amiga 500 (1MB OCS) / TOS 4.04 From gfournier@utexas.edu Tue Feb 21 10:37:11 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!utexas!gfournier From: gfournier@utexas.edu (Graham Fournier) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb21.103711.4774@utexas.edu> Date: Tue, 21 Feb 1995 10:37:11 GMT References: <1995Feb19.093711.6723@kiae.su> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Feb19.093711.6723@kiae.su>, blaurent@kiae.su (Bill Laurent) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. > The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Graham Fournier | gfournier@utexas.edu PGP Key fingerprint: 0362 EDA8 5A6B 69E2 "Keep the channels open."