From alee@delphi.com Fri Jul 26 23:49:16 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!delphi!alee From: alee@delphi.com (Anton Lee) Newsgroups: comp.dsp Subject: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jul26.234916.9207@delphi.com> Date: Fri, 26 Jul 1996 23:49:16 GMT Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. 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. -- Anton Lee | alee@delphi.com PGP Key fingerprint: 7911 8365 0375 ED82 "Keep the channels open." From deriksson@pacbell.net Sun Jul 28 01:20:16 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!pacbell!deriksson From: deriksson@pacbell.net (Dave Eriksson) Newsgroups: comp.dsp Subject: Re: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jul28.012016.9384@pacbell.net> Date: Sun, 28 Jul 1996 01:20:16 GMT References: <1996Jul26.234916.9207@delphi.com> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Jul26.234916.9207@delphi.com>, alee@delphi.com (Anton Lee) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Dave Eriksson Opinions expressed are solely my own and not those of Pacific Bell Internet Services. ------------------------------------------------------------ From jmoreno@clari.net Mon Jul 29 23:51:16 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!clari!jmoreno From: jmoreno@clari.net (Jen Moreno) Newsgroups: comp.dsp Subject: Re: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jul29.235116.2836@clari.net> Date: Mon, 29 Jul 1996 23:51:16 GMT References: <1996Jul26.234916.9207@delphi.com> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Jul26.234916.9207@delphi.com>, alee@delphi.com (Anton Lee) 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. -- Jen Moreno "Hardware is temporary. The signal survives." Sun 3/60 (SunOS 4.1.1) / System 7.5.1 From prodriguez@tum.de Wed Jul 31 18:33:16 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!tum!prodriguez From: prodriguez@tum.de (Pavel Rodríguez) Newsgroups: comp.dsp Subject: Re: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Jul31.183316.8361@tum.de> Date: Wed, 31 Jul 1996 18:33:16 GMT References: <1996Jul26.234916.9207@delphi.com> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 11 In article <1996Jul26.234916.9207@delphi.com>, alee@delphi.com (Anton Lee) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Pavel Rodríguez | prodriguez@tum.de PGP Key fingerprint: 260B 3D55 2459 C45F "Keep the channels open."