From ksouza@illinois.edu Mon Jan 16 07:34:14 1995 Path: ashpoly!cascade!transat!ukc!fennimore!illinois!ksouza From: ksouza@illinois.edu (Kenji Souza) Newsgroups: comp.dsp Subject: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jan16.073414.1044@illinois.edu> Date: Mon, 16 Jan 1995 07:34:14 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: NewsWatcher 2.0b24 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. 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. -- Kenji Souza | ksouza@illinois.edu PGP Key fingerprint: 62AE 81AB F9D7 F383 "Keep the channels open." From csokolov@clari.net Tue Jan 17 05:00:14 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!clari!csokolov From: csokolov@clari.net (Callum Sokolov) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jan17.050014.2375@clari.net> Date: Tue, 17 Jan 1995 05:00:14 GMT References: <1995Jan16.073414.1044@illinois.edu> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Jan16.073414.1044@illinois.edu>, ksouza@illinois.edu (Kenji Souza) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. > Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Callum Sokolov *PLONK* filter active for trolls. PC-9821Ap2 (NEC) - NetBSD 1.0 From twatanabe@illinois.edu Wed Jan 18 06:52:14 1995 Path: ashpoly!cascade!transat!ukc!fennimore!illinois!twatanabe From: twatanabe@illinois.edu (Thiago Watanabe) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jan18.065214.6222@illinois.edu> Date: Wed, 18 Jan 1995 06:52:14 GMT References: <1995Jan16.073414.1044@illinois.edu> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Jan16.073414.1044@illinois.edu>, ksouza@illinois.edu (Kenji Souza) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. > Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Thiago Watanabe Opinions expressed are solely my own and not those of University of Illinois Urbana-Champaign. ------------------------------------------------------------ From breyes@purdue.edu Thu Jan 19 12:50:14 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!purdue!breyes From: breyes@purdue.edu (Bruno Reyes) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jan19.125014.4609@purdue.edu> Date: Thu, 19 Jan 1995 12:50:14 GMT References: <1995Jan16.073414.1044@illinois.edu> <1995Jan17.050014.2375@clari.net> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1995Jan17.050014.2375@clari.net>, csokolov@clari.net (Callum Sokolov) writes: > Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Bruno Reyes Tape trading list upon request. SASE required for international mail. From cschneider@kth.se Fri Jan 20 05:25:14 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kth!cschneider From: cschneider@kth.se (Callum Schneider) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jan20.052514.2065@kth.se> Date: Fri, 20 Jan 1995 05:25:14 GMT References: <1995Jan16.073414.1044@illinois.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Jan16.073414.1044@illinois.edu>, ksouza@illinois.edu (Kenji Souza) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. PGP Public key available via finger or upon request. -- Callum Schneider Tape trading list upon request. SASE required for international mail.