From mgonzalez@cam.ac.uk Tue Oct 17 03:27:00 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cam!mgonzalez From: mgonzalez@cam.ac.uk (Mathieu González) Newsgroups: comp.dsp Subject: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Oct17.032700.2545@cam.ac.uk> Date: Tue, 17 Oct 1995 03:27:00 GMT Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk 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). When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Mathieu González Practical Peripherals 14.4 @ 9600 Telebit bps "Row 14. No joke." From rrodriguez@cmu.edu Tue Oct 17 04:36:00 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!cmu!rrodriguez From: rrodriguez@cmu.edu (Renata Rodríguez) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Oct17.043600.9153@cmu.edu> Date: Tue, 17 Oct 1995 04:36:00 GMT References: <1995Oct17.032700.2545@cam.ac.uk> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Oct17.032700.2545@cam.ac.uk>, mgonzalez@cam.ac.uk (Mathieu González) writes: > 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 Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- === Renata Rodríguez === Dept of Electrical Engineering, Carnegie Mellon University School of CS "Do not worship the copy."