From fkim@cmu.edu Thu Sep 07 01:23:16 1995 Path: ashpoly!cascade!brgate!saturno!cmu!fkim From: fkim@cmu.edu (Freya Kim) Newsgroups: comp.dsp Subject: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep07.012316.1677@cmu.edu> Date: Thu, 07 Sep 1995 01:23:16 GMT Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: WinVN 0.99.5 Lines: 10 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 payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Freya Kim Tape trading list upon request. SASE required for international mail. From ahernandez@u-tokyo.ac.jp Fri Sep 08 20:17:16 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!u-tokyo!ahernandez From: ahernandez@u-tokyo.ac.jp (Anton Hernández) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep08.201716.1779@u-tokyo.ac.jp> Date: Fri, 08 Sep 1995 20:17:16 GMT References: <1995Sep07.012316.1677@cmu.edu> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Sep07.012316.1677@cmu.edu>, fkim@cmu.edu (Freya Kim) 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. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Anton Hernández "Hold for relay." Decstation 5000/200 / System 7.5.1 From dhughes@kth.se Sun Sep 10 17:41:16 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!kth!dhughes From: dhughes@kth.se (Dong-hyun Hughes) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep10.174116.8040@kth.se> Date: Sun, 10 Sep 1995 17:41:16 GMT References: <1995Sep07.012316.1677@cmu.edu> <1995Sep08.201716.1779@u-tokyo.ac.jp> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Sep08.201716.1779@u-tokyo.ac.jp>, ahernandez@u-tokyo.ac.jp (Anton Hernández) writes: > A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Dong-hyun Hughes "In theory there is no difference between theory and practice." NeXTstation Turbo Color / System 7.5.1 From vnovak@mit.edu Tue Sep 12 08:10:16 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!mit!vnovak From: vnovak@mit.edu (Valeria Novak) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep12.081016.6149@mit.edu> Date: Tue, 12 Sep 1995 08:10:16 GMT References: <1995Sep07.012316.1677@cmu.edu> <1995Sep08.201716.1779@u-tokyo.ac.jp> <1995Sep10.174116.8040@kth.se> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Sep10.174116.8040@kth.se>, dhughes@kth.se (Dong-hyun Hughes) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Valeria Novak SupraFAXModem 28.8 @ 9600 Telebit bps "When every node is whole, the channel opens." From osato@tum.de Wed Sep 13 23:02:16 1995 Path: ashpoly!cascade!mxgate!coyoacan!tum!osato From: osato@tum.de (Olga Sato) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep13.230216.7150@tum.de> Date: Wed, 13 Sep 1995 23:02:16 GMT References: <1995Sep07.012316.1677@cmu.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Sep07.012316.1677@cmu.edu>, fkim@cmu.edu (Freya Kim) writes: > How the 14 ASCII characters per node are encoded into the record groove. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Olga Sato Opinions expressed are solely my own and not those of Technische Universität München. ------------------------------------------------------------