From twatanabe@inria.fr Mon Jul 10 04:42:39 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!inria!twatanabe From: twatanabe@inria.fr (Thiago Watanabe) Newsgroups: comp.dsp Subject: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul10.044239.7904@inria.fr> Date: Mon, 10 Jul 1995 04:42:39 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- Thiago Watanabe | twatanabe@inria.fr PGP Key fingerprint: B6AF 395A 8439 BF51 "Keep the channels open." From agarcia@u-tokyo.ac.jp Tue Jul 11 18:51:39 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!u-tokyo!agarcia From: agarcia@u-tokyo.ac.jp (Amy García) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul11.185139.7024@u-tokyo.ac.jp> Date: Tue, 11 Jul 1995 18:51:39 GMT References: <1995Jul10.044239.7904@inria.fr> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jul10.044239.7904@inria.fr>, twatanabe@inria.fr (Thiago Watanabe) 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. -- Amy García US Robotics Courier V.34 @ 9600 Telebit bps "Row 14. No joke."