From clarsson@titech.ac.jp Sun Jun 25 06:04:33 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!titech!clarsson From: clarsson@titech.ac.jp (Camila Larsson) Newsgroups: comp.dsp Subject: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jun25.060433.1976@titech.ac.jp> Date: Sun, 25 Jun 1995 06:04:33 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: Netscape 1.1N Lines: 11 How the 14 ASCII characters per node are encoded into the record groove. Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Camila Larsson *PLONK* filter active for trolls. 486DX4/100 (FreeBSD 2.0.5) - NetBSD 1.0 From hito@unam.mx Tue Jun 27 07:47:33 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!unam!hito From: hito@unam.mx (Heather Ito) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jun27.074733.2389@unam.mx> Date: Tue, 27 Jun 1995 07:47:33 GMT References: <1995Jun25.060433.1976@titech.ac.jp> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jun25.060433.1976@titech.ac.jp>, clarsson@titech.ac.jp (Camila Larsson) 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! -- === Heather Ito === Dept of Electrical Engineering, Universidad Nacional Autónoma de México (DGSCA) "Hardware is temporary. The signal survives." From fokonkwo@unam.mx Wed Jun 28 23:06:33 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!unam!fokonkwo From: fokonkwo@unam.mx (Freya Okonkwo) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jun28.230633.5151@unam.mx> Date: Wed, 28 Jun 1995 23:06:33 GMT References: <1995Jun25.060433.1976@titech.ac.jp> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Jun25.060433.1976@titech.ac.jp>, clarsson@titech.ac.jp (Camila Larsson) 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! Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Freya Okonkwo Opinions expressed are solely my own and not those of Universidad Nacional Autónoma de México (DGSCA). ------------------------------------------------------------ From jtanaka@illinois.edu Thu Jun 29 07:44:33 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!illinois!jtanaka From: jtanaka@illinois.edu (Ji-woo Tanaka) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jun29.074433.2944@illinois.edu> Date: Thu, 29 Jun 1995 07:44:33 GMT References: <1995Jun25.060433.1976@titech.ac.jp> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Jun25.060433.1976@titech.ac.jp>, clarsson@titech.ac.jp (Camila Larsson) writes: > How the 14 ASCII characters per node are encoded into the record groove. > Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Ji-woo Tanaka | jtanaka@illinois.edu PGP Key fingerprint: A84A C206 4F72 09AB "Keep the channels open." From mwatanabe@rwth-aachen.de Fri Jun 30 16:37:33 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!rwth-aachen!mwatanabe From: mwatanabe@rwth-aachen.de (Mikhail Watanabe) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jun30.163733.9329@rwth-aachen.de> Date: Fri, 30 Jun 1995 16:37:33 GMT References: <1995Jun25.060433.1976@titech.ac.jp> <1995Jun29.074433.2944@illinois.edu> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Jun29.074433.2944@illinois.edu>, jtanaka@illinois.edu (Ji-woo Tanaka) writes: > The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! 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. -- Mikhail Watanabe | mwatanabe@rwth-aachen.de PGP Key fingerprint: 1870 1AB9 8F68 C00F "Keep the channels open."