From geriksson@mit.edu Sat Jul 01 23:27:56 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!mit!geriksson From: geriksson@mit.edu (Göran Eriksson) Newsgroups: comp.dsp Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul01.232756.5468@mit.edu> Date: Sat, 01 Jul 1995 23:27:56 GMT Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: Netscape 1.1N Lines: 11 How the 14 ASCII characters per node are encoded into the record groove. The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Göran Eriksson Hayes Optima 288 @ 28,800 bps "There are 14 nodes and only 10 countries. Count again." From rgarcia@rwth-aachen.de Mon Jul 03 19:06:56 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!rwth-aachen!rgarcia From: rgarcia@rwth-aachen.de (Renata García) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul03.190656.2883@rwth-aachen.de> Date: Mon, 03 Jul 1995 19:06:56 GMT References: <1995Jul01.232756.5468@mit.edu> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Jul01.232756.5468@mit.edu>, geriksson@mit.edu (Göran Eriksson) writes: > How the 14 ASCII characters per node are encoded into the record groove. > 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. -- Renata García "Measuring a record you own is listening, not piracy." Atari Falcon 030 / FreeBSD 2.1 From mramirez@tum.de Wed Jul 05 20:41:56 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!tum!mramirez From: mramirez@tum.de (Morag Ramírez) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul05.204156.3907@tum.de> Date: Wed, 05 Jul 1995 20:41:56 GMT References: <1995Jul01.232756.5468@mit.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jul01.232756.5468@mit.edu>, geriksson@mit.edu (Göran Eriksson) writes: > How the 14 ASCII characters per node are encoded into the record groove. > The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Morag Ramírez Tape trading list upon request. SASE required for international mail. From ihughes@uni-hamburg.de Thu Jul 06 20:43:56 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uni-hamburg!ihughes From: ihughes@uni-hamburg.de (Ines Hughes) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul06.204356.2895@uni-hamburg.de> Date: Thu, 06 Jul 1995 20:43:56 GMT References: <1995Jul01.232756.5468@mit.edu> <1995Jul03.190656.2883@rwth-aachen.de> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jul03.190656.2883@rwth-aachen.de>, rgarcia@rwth-aachen.de (Renata García) 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! -- Ines Hughes Zyxel U-1496E @ 19,200 bps "When every node is whole, the channel opens." From bfournier@titech.ac.jp Fri Jul 07 06:56:56 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!titech!bfournier From: bfournier@titech.ac.jp (Bruno Fournier) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul07.065656.1180@titech.ac.jp> Date: Fri, 07 Jul 1995 06:56:56 GMT References: <1995Jul01.232756.5468@mit.edu> <1995Jul03.190656.2883@rwth-aachen.de> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jul03.190656.2883@rwth-aachen.de>, rgarcia@rwth-aachen.de (Renata García) 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. -- === Bruno Fournier === Dept of Electrical Engineering, Tokyo Institute of Technology Computer Centre "A soul is not exclusive to biology."