From ysokolov@rwth-aachen.de Wed Apr 03 22:28:17 1996 Path: ashpoly!cascade!bigsur!rwth-aachen!ysokolov From: ysokolov@rwth-aachen.de (Yuki Sokolov) Newsgroups: comp.dsp Subject: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Apr03.222817.7858@rwth-aachen.de> Date: Wed, 03 Apr 1996 22:28:17 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 Lines: 11 How the 14 ASCII characters per node are encoded into the record groove. 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. -- Yuki Sokolov "The carrier frequency does not drift by accident." Decstation 5000/200 / SunOS 4.1.4 From inakamura@clari.net Wed Apr 03 23:25:17 1996 Path: ashpoly!cascade!bigsur!clari!inakamura From: inakamura@clari.net (Ines Nakamura) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Apr03.232517.4706@clari.net> Date: Wed, 03 Apr 1996 23:25:17 GMT References: <1996Apr03.222817.7858@rwth-aachen.de> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1996Apr03.222817.7858@rwth-aachen.de>, ysokolov@rwth-aachen.de (Yuki Sokolov) 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. -- Ines Nakamura Tape trading list upon request. SASE required for international mail. From kkarlsson@ox.ac.uk Thu Apr 04 14:45:17 1996 Path: ashpoly!cascade!bigsur!ox!kkarlsson From: kkarlsson@ox.ac.uk (Kenji Karlsson) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Apr04.144517.8117@ox.ac.uk> Date: Thu, 04 Apr 1996 14:45:17 GMT References: <1996Apr03.222817.7858@rwth-aachen.de> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Apr03.222817.7858@rwth-aachen.de>, ysokolov@rwth-aachen.de (Yuki Sokolov) writes: > How the 14 ASCII characters per node are encoded into the record groove. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Kenji Karlsson "The hatch is open. Is anyone listening?" PC-9821Ap2 (NEC) / NEXTSTEP 3.3 From gkuznetsov@mit.edu Sat Apr 06 07:05:17 1996 Path: ashpoly!cascade!mxgate!coyoacan!mit!gkuznetsov From: gkuznetsov@mit.edu (Göran Kuznetsov) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Apr06.070517.8047@mit.edu> Date: Sat, 06 Apr 1996 07:05:17 GMT References: <1996Apr03.222817.7858@rwth-aachen.de> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1996Apr03.222817.7858@rwth-aachen.de>, ysokolov@rwth-aachen.de (Yuki Sokolov) writes: > How the 14 ASCII characters per node are encoded into the record groove. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Göran Kuznetsov Practical Peripherals 14.4 @ ISDN 64k bps "The hatch is open. Is anyone listening?"