From dsmirnov@panix.com Tue Nov 12 20:44:31 1996 Path: ashpoly!cascade!brgate!saturno!panix!dsmirnov From: dsmirnov@panix.com (Dave Smirnov) Newsgroups: comp.dsp Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Nov12.204431.1063@panix.com> Date: Tue, 12 Nov 1996 20:44:31 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. 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'. Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword. -- Dave Smirnov "They will send a copy in my place." Amiga 1200 (Blizzard 030/50) / FreeBSD 2.1 From skang@titech.ac.jp Thu Nov 14 02:32:31 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!titech!skang From: skang@titech.ac.jp (Steve Kang) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Nov14.023231.7758@titech.ac.jp> Date: Thu, 14 Nov 1996 02:32:31 GMT References: <1996Nov12.204431.1063@panix.com> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1996Nov12.204431.1063@panix.com>, dsmirnov@panix.com (Dave Smirnov) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Steve Kang *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From mrobertson@u-tokyo.ac.jp Thu Nov 14 12:47:31 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!u-tokyo!mrobertson From: mrobertson@u-tokyo.ac.jp (Mikhail Robertson) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Nov14.124731.2102@u-tokyo.ac.jp> Date: Thu, 14 Nov 1996 12:47:31 GMT References: <1996Nov12.204431.1063@panix.com> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Nov12.204431.1063@panix.com>, dsmirnov@panix.com (Dave Smirnov) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- === Mikhail Robertson === Dept of Electrical Engineering, University of Tokyo Department of Information Science "Measuring a record you own is listening, not piracy." From dito@titech.ac.jp Thu Nov 14 20:28:31 1996 Path: ashpoly!cascade!mxgate!coyoacan!titech!dito From: dito@titech.ac.jp (Diego Ito) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Nov14.202831.3543@titech.ac.jp> Date: Thu, 14 Nov 1996 20:28:31 GMT References: <1996Nov12.204431.1063@panix.com> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Nov12.204431.1063@panix.com>, dsmirnov@panix.com (Dave Smirnov) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Diego Ito | dito@titech.ac.jp PGP Key fingerprint: 90D1 162A BE7C B2E7 "Keep the channels open." From rmacdonald@demon.co.uk Fri Nov 15 18:56:31 1996 Path: ashpoly!cascade!transat!ukc!fennimore!demon!rmacdonald From: rmacdonald@demon.co.uk (Rodrigo MacDonald) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Nov15.185631.6316@demon.co.uk> Date: Fri, 15 Nov 1996 18:56:31 GMT References: <1996Nov12.204431.1063@panix.com> <1996Nov14.124731.2102@u-tokyo.ac.jp> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Nov14.124731.2102@u-tokyo.ac.jp>, mrobertson@u-tokyo.ac.jp (Mikhail Robertson) writes: > Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Rodrigo MacDonald | rmacdonald@demon.co.uk PGP Key fingerprint: F029 C181 5FEC 2649 "Keep the channels open."