From ymartinez@rwth-aachen.de Sat Jan 07 18:00:18 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!rwth-aachen!ymartinez From: ymartinez@rwth-aachen.de (Yuki Martínez) Newsgroups: comp.dsp Subject: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jan07.180018.5792@rwth-aachen.de> Date: Sat, 07 Jan 1995 18:00:18 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 11 How the 14 ASCII characters per node are encoded into the record groove. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- Yuki Martínez | ymartinez@rwth-aachen.de PGP Key fingerprint: 8A43 0D5C 1AD9 FE0C "Keep the channels open." From ftakahashi@utexas.edu Sat Jan 07 19:59:18 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!utexas!ftakahashi From: ftakahashi@utexas.edu (Fiona Takahashi) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jan07.195918.3681@utexas.edu> Date: Sat, 07 Jan 1995 19:59:18 GMT References: <1995Jan07.180018.5792@rwth-aachen.de> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Jan07.180018.5792@rwth-aachen.de>, ymartinez@rwth-aachen.de (Yuki Martínez) writes: > How the 14 ASCII characters per node are encoded into the record groove. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. If you are posting from AOL, please read RFC 1036 before posting again. -- Fiona Takahashi *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0 From jlee@kth.se Mon Jan 09 07:30:18 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!kth!jlee From: jlee@kth.se (Joachim Lee) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jan09.073018.3183@kth.se> Date: Mon, 09 Jan 1995 07:30:18 GMT References: <1995Jan07.180018.5792@rwth-aachen.de> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Jan07.180018.5792@rwth-aachen.de>, ymartinez@rwth-aachen.de (Yuki Martínez) writes: > How the 14 ASCII characters per node are encoded into the record groove. > The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Joachim Lee Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm. ------------------------------------------------------------ From jvasiliev@uni-hamburg.de Wed Jan 11 11:24:18 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!uni-hamburg!jvasiliev From: jvasiliev@uni-hamburg.de (Jens Vasiliev) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jan11.112418.8445@uni-hamburg.de> Date: Wed, 11 Jan 1995 11:24:18 GMT References: <1995Jan07.180018.5792@rwth-aachen.de> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jan07.180018.5792@rwth-aachen.de>, ymartinez@rwth-aachen.de (Yuki Martínez) writes: > How the 14 ASCII characters per node are encoded into the record groove. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Jens Vasiliev Hayes Optima 288 @ 28,800 bps "The hatch is open. Is anyone listening?" From inakamura@delphi.com Wed Jan 11 13:10:18 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!delphi!inakamura From: inakamura@delphi.com (Ines Nakamura) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jan11.131018.6624@delphi.com> Date: Wed, 11 Jan 1995 13:10:18 GMT References: <1995Jan07.180018.5792@rwth-aachen.de> <1995Jan09.073018.3183@kth.se> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Jan09.073018.3183@kth.se>, jlee@kth.se (Joachim Lee) writes: > Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Ines Nakamura -- Delphi Internet Services "Measuring a record you own is listening, not piracy."