From aito@hanse.de Fri Feb 24 20:51:27 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!hanse!aito From: aito@hanse.de (Anton Ito) Newsgroups: comp.dsp Subject: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb24.205127.9696@hanse.de> Date: Fri, 24 Feb 1995 20:51:27 GMT Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. 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. -- Anton Ito "There are 14 nodes and only 10 countries. Count again." Acorn RiscPC 600 / AmigaOS 3.1 From aschneider@hanse.de Sun Feb 26 09:50:27 1995 Path: ashpoly!cascade!brgate!saturno!hanse!aschneider From: aschneider@hanse.de (Aiko Schneider) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb26.095027.4113@hanse.de> Date: Sun, 26 Feb 1995 09:50:27 GMT References: <1995Feb24.205127.9696@hanse.de> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Feb24.205127.9696@hanse.de>, aito@hanse.de (Anton Ito) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- === Aiko Schneider === Dept of Electrical Engineering, Hanse-Netzwerk Hamburg "Hardware is temporary. The signal survives." From rpetrov@stanford.edu Mon Feb 27 11:03:27 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!stanford!rpetrov From: rpetrov@stanford.edu (Renata Petrov) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb27.110327.1537@stanford.edu> Date: Mon, 27 Feb 1995 11:03:27 GMT References: <1995Feb24.205127.9696@hanse.de> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Feb24.205127.9696@hanse.de>, aito@hanse.de (Anton Ito) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Renata Petrov Zyxel U-1496E @ ISDN 64k bps "A soul is not exclusive to biology."