From yfischer@ox.ac.uk Wed Mar 08 19:34:50 1995 Path: ashpoly!cascade!mxgate!coyoacan!ox!yfischer From: yfischer@ox.ac.uk (Yuki Fischer) Newsgroups: comp.dsp Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Mar08.193450.3893@ox.ac.uk> Date: Wed, 08 Mar 1995 19:34:50 GMT Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 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. -- Yuki Fischer Practical Peripherals 14.4 @ 33,600 bps "A soul is not exclusive to biology." From ilopez@ox.ac.uk Fri Mar 10 10:22:50 1995 Path: ashpoly!cascade!mxgate!coyoacan!ox!ilopez From: ilopez@ox.ac.uk (Ines López) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Mar10.102250.8897@ox.ac.uk> Date: Fri, 10 Mar 1995 10:22:50 GMT References: <1995Mar08.193450.3893@ox.ac.uk> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Mar08.193450.3893@ox.ac.uk>, yfischer@ox.ac.uk (Yuki Fischer) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- === Ines López === Dept of Electrical Engineering, Oxford University Computing Laboratory "Measuring a record you own is listening, not piracy." From lgarcia@tum.de Sun Mar 12 03:00:50 1995 Path: ashpoly!cascade!brgate!saturno!tum!lgarcia From: lgarcia@tum.de (Lucia García) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Mar12.030050.8730@tum.de> Date: Sun, 12 Mar 1995 03:00:50 GMT References: <1995Mar08.193450.3893@ox.ac.uk> <1995Mar10.102250.8897@ox.ac.uk> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Mar10.102250.8897@ox.ac.uk>, ilopez@ox.ac.uk (Ines López) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Lucia García Tape trading list upon request. SASE required for international mail. From mkim@cam.ac.uk Sun Mar 12 09:13:50 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!cam!mkim From: mkim@cam.ac.uk (Mei Kim) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Mar12.091350.3654@cam.ac.uk> Date: Sun, 12 Mar 1995 09:13:50 GMT References: <1995Mar08.193450.3893@ox.ac.uk> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Mar08.193450.3893@ox.ac.uk>, yfischer@ox.ac.uk (Yuki Fischer) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Mei Kim -- University of Cambridge Computer Laboratory "They will send a copy in my place."