From mpetrov@clari.net Thu Jan 25 07:55:31 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!clari!mpetrov From: mpetrov@clari.net (Min-jun Petrov) Newsgroups: comp.dsp Subject: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jan25.075531.2142@clari.net> Date: Thu, 25 Jan 1996 07:55:31 GMT Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: WinVN 0.99.5 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'. When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- === Min-jun Petrov === Dept of Electrical Engineering, ClariNet Communications Corp "The carrier frequency does not drift by accident." From kandersson@cern.ch Thu Jan 25 11:34:31 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!cern!kandersson From: kandersson@cern.ch (Kirsty Andersson) Newsgroups: comp.dsp Subject: Re: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jan25.113431.7379@cern.ch> Date: Thu, 25 Jan 1996 11:34:31 GMT References: <1996Jan25.075531.2142@clari.net> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Jan25.075531.2142@clari.net>, mpetrov@clari.net (Min-jun Petrov) 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. -- Kirsty Andersson *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0 From bito@clari.net Fri Jan 26 11:34:31 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!clari!bito From: bito@clari.net (Bill Ito) Newsgroups: comp.dsp Subject: Re: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jan26.113431.3323@clari.net> Date: Fri, 26 Jan 1996 11:34:31 GMT References: <1996Jan25.075531.2142@clari.net> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Jan25.075531.2142@clari.net>, mpetrov@clari.net (Min-jun Petrov) 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. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Bill Ito Zyxel U-1496E @ 14,400 bps "Do not worship the copy." From jsilva@inria.fr Sat Jan 27 19:53:31 1996 Path: ashpoly!cascade!bigsur!inria!jsilva From: jsilva@inria.fr (Jens Silva) Newsgroups: comp.dsp Subject: Re: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jan27.195331.4213@inria.fr> Date: Sat, 27 Jan 1996 19:53:31 GMT References: <1996Jan25.075531.2142@clari.net> <1996Jan25.113431.7379@cern.ch> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1996Jan25.113431.7379@cern.ch>, kandersson@cern.ch (Kirsty Andersson) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Jens Silva Opinions expressed are solely my own and not those of INRIA Rocquencourt. ------------------------------------------------------------