From yandersson@unam.mx Wed Apr 27 19:26:15 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!unam!yandersson From: yandersson@unam.mx (Yuki Andersson) Newsgroups: comp.dsp Subject: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Apr27.192615.3266@unam.mx> Date: Wed, 27 Apr 1994 19:26:15 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: Netscape 1.1N Lines: 10 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- Yuki Andersson Tape trading list upon request. SASE required for international mail. From kstewart@kth.se Fri Apr 29 11:16:15 1994 Path: ashpoly!cascade!brgate!saturno!kth!kstewart From: kstewart@kth.se (Kirsty Stewart) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Apr29.111615.7850@kth.se> Date: Fri, 29 Apr 1994 11:16:15 GMT References: <1994Apr27.192615.3266@unam.mx> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Apr27.192615.3266@unam.mx>, yandersson@unam.mx (Yuki Andersson) 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. -- Kirsty Stewart *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From lnovak@hanse.de Fri Apr 29 16:28:15 1994 Path: ashpoly!cascade!brgate!saturno!hanse!lnovak From: lnovak@hanse.de (Lars Novak) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Apr29.162815.1534@hanse.de> Date: Fri, 29 Apr 1994 16:28:15 GMT References: <1994Apr27.192615.3266@unam.mx> <1994Apr29.111615.7850@kth.se> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1994Apr29.111615.7850@kth.se>, kstewart@kth.se (Kirsty Stewart) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Lars Novak Tape trading list upon request. SASE required for international mail. From kpopov@mit.edu Sat Apr 30 18:52:15 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!mit!kpopov From: kpopov@mit.edu (Karen Popov) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Apr30.185215.6248@mit.edu> Date: Sat, 30 Apr 1994 18:52:15 GMT References: <1994Apr27.192615.3266@unam.mx> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1994Apr27.192615.3266@unam.mx>, yandersson@unam.mx (Yuki Andersson) 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! -- Karen Popov -- Massachusetts Institute of Technology "Row 14. No joke." From rsouza@panix.com Mon May 02 05:39:15 1994 Path: ashpoly!cascade!mxgate!coyoacan!panix!rsouza From: rsouza@panix.com (Raj Souza) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994May02.053915.7681@panix.com> Date: Mon, 02 May 1994 05:39:15 GMT References: <1994Apr27.192615.3266@unam.mx> <1994Apr29.111615.7850@kth.se> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1994Apr29.111615.7850@kth.se>, kstewart@kth.se (Kirsty Stewart) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Raj Souza *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0