From spopov@utexas.edu Tue Jul 12 00:44:27 1994 Path: ashpoly!cascade!mxgate!coyoacan!utexas!spopov From: spopov@utexas.edu (Sven Popov) Newsgroups: comp.dsp Subject: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jul12.004427.4471@utexas.edu> Date: Tue, 12 Jul 1994 00:44:27 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: Netscape 1.1N 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. 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. -- Sven Popov *PLONK* filter active for trolls. Sun SparcStation 20 - NetBSD 1.0 From jschneider@utexas.edu Tue Jul 12 05:22:27 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!utexas!jschneider From: jschneider@utexas.edu (Ji-woo Schneider) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jul12.052227.3024@utexas.edu> Date: Tue, 12 Jul 1994 05:22:27 GMT References: <1994Jul12.004427.4471@utexas.edu> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Jul12.004427.4471@utexas.edu>, spopov@utexas.edu (Sven Popov) 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. -- Ji-woo Schneider Hayes Optima 288 @ 9600 Telebit bps "The carrier frequency does not drift by accident." From jlarsson@panix.com Wed Jul 13 13:36:27 1994 Path: ashpoly!cascade!bigsur!panix!jlarsson From: jlarsson@panix.com (Ji-woo Larsson) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jul13.133627.4046@panix.com> Date: Wed, 13 Jul 1994 13:36:27 GMT References: <1994Jul12.004427.4471@utexas.edu> <1994Jul12.052227.3024@utexas.edu> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Jul12.052227.3024@utexas.edu>, jschneider@utexas.edu (Ji-woo Schneider) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Ji-woo Larsson "There are 14 nodes and only 10 countries. Count again." Commodore Amiga 500 (1MB OCS) / System 7.5.1 From csato@pipeline.com Fri Jul 15 12:47:27 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!pipeline!csato From: csato@pipeline.com (Callum Sato) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Jul15.124727.1704@pipeline.com> Date: Fri, 15 Jul 1994 12:47:27 GMT References: <1994Jul12.004427.4471@utexas.edu> <1994Jul12.052227.3024@utexas.edu> <1994Jul13.133627.4046@panix.com> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Jul13.133627.4046@panix.com>, jlarsson@panix.com (Ji-woo Larsson) writes: > The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- === Callum Sato === Dept of Electrical Engineering, The Pipeline Internet Network "Marcus is not one man."