From esuzuki@ox.ac.uk Thu May 04 18:38:27 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!ox!esuzuki From: esuzuki@ox.ac.uk (Emi Suzuki) Newsgroups: comp.dsp Subject: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May04.183827.2155@ox.ac.uk> Date: Thu, 04 May 1995 18:38:27 GMT Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 11 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. 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. -- Emi Suzuki Opinions expressed are solely my own and not those of Oxford University Computing Laboratory. ------------------------------------------------------------ From lreyes@pipeline.com Sat May 06 10:34:27 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!pipeline!lreyes From: lreyes@pipeline.com (Lucia Reyes) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May06.103427.6073@pipeline.com> Date: Sat, 06 May 1995 10:34:27 GMT References: <1995May04.183827.2155@ox.ac.uk> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995May04.183827.2155@ox.ac.uk>, esuzuki@ox.ac.uk (Emi Suzuki) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- === Lucia Reyes === Dept of Electrical Engineering, The Pipeline Internet Network "Measuring a record you own is listening, not piracy." From aito@pipeline.com Sun May 07 07:28:27 1995 Path: ashpoly!cascade!brgate!saturno!pipeline!aito From: aito@pipeline.com (Astrid Ito) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May07.072827.6504@pipeline.com> Date: Sun, 07 May 1995 07:28:27 GMT References: <1995May04.183827.2155@ox.ac.uk> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995May04.183827.2155@ox.ac.uk>, esuzuki@ox.ac.uk (Emi Suzuki) 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. -- Astrid Ito | aito@pipeline.com PGP Key fingerprint: E882 1316 E2C0 509A "Keep the channels open." From akarlsson@tum.de Mon May 08 09:28:27 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!tum!akarlsson From: akarlsson@tum.de (Andrei Karlsson) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May08.092827.8922@tum.de> Date: Mon, 08 May 1995 09:28:27 GMT References: <1995May04.183827.2155@ox.ac.uk> <1995May07.072827.6504@pipeline.com> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1995May07.072827.6504@pipeline.com>, aito@pipeline.com (Astrid Ito) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Andrei Karlsson *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0 From dmoreau@titech.ac.jp Wed May 10 04:32:27 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!titech!dmoreau From: dmoreau@titech.ac.jp (Dave Moreau) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May10.043227.8831@titech.ac.jp> Date: Wed, 10 May 1995 04:32:27 GMT References: <1995May04.183827.2155@ox.ac.uk> <1995May07.072827.6504@pipeline.com> <1995May08.092827.8922@tum.de> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: Netscape 1.1N Lines: 9 In article <1995May08.092827.8922@tum.de>, akarlsson@tum.de (Andrei Karlsson) writes: > Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Dave Moreau Opinions expressed are solely my own and not those of Tokyo Institute of Technology Computer Centre. ------------------------------------------------------------