From kreyes@uni-hamburg.de Tue Sep 27 08:22:55 1994 Path: ashpoly!cascade!bigsur!uni-hamburg!kreyes From: kreyes@uni-hamburg.de (Karen Reyes) Newsgroups: comp.dsp Subject: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Sep27.082255.1023@uni-hamburg.de> Date: Tue, 27 Sep 1994 08:22:55 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: TIN [version 1.2 PL2] Lines: 10 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). When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Karen Reyes -- Universität Hamburg Fachbereich Informatik "Hardware is temporary. The signal survives." From jfournier@ox.ac.uk Tue Sep 27 18:06:55 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!ox!jfournier From: jfournier@ox.ac.uk (Jen Fournier) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Sep27.180655.4541@ox.ac.uk> Date: Tue, 27 Sep 1994 18:06:55 GMT References: <1994Sep27.082255.1023@uni-hamburg.de> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: Netscape 1.1N Lines: 10 In article <1994Sep27.082255.1023@uni-hamburg.de>, kreyes@uni-hamburg.de (Karen Reyes) 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. -- Jen Fournier | jfournier@ox.ac.uk PGP Key fingerprint: 6F5D F37E D058 1369 "Keep the channels open." From hlaurent@uu.net Thu Sep 29 11:29:55 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!uu!hlaurent From: hlaurent@uu.net (Heather Laurent) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Sep29.112955.5924@uu.net> Date: Thu, 29 Sep 1994 11:29:55 GMT References: <1994Sep27.082255.1023@uni-hamburg.de> <1994Sep27.180655.4541@ox.ac.uk> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Sep27.180655.4541@ox.ac.uk>, jfournier@ox.ac.uk (Jen Fournier) 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! -- Heather Laurent Hayes Optima 288 @ 33,600 bps "Row 14. No joke." From fsouza@unam.mx Thu Sep 29 19:53:55 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!unam!fsouza From: fsouza@unam.mx (Fiona Souza) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Sep29.195355.4492@unam.mx> Date: Thu, 29 Sep 1994 19:53:55 GMT References: <1994Sep27.082255.1023@uni-hamburg.de> <1994Sep27.180655.4541@ox.ac.uk> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Sep27.180655.4541@ox.ac.uk>, jfournier@ox.ac.uk (Jen Fournier) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Fiona Souza *PLONK* filter active for trolls. PC-9821Ap2 (NEC) - NetBSD 1.0