From glaurent@uni-hamburg.de Sun Sep 22 16:21:52 1996 Path: ashpoly!cascade!bigsur!uni-hamburg!glaurent From: glaurent@uni-hamburg.de (Graham Laurent) Newsgroups: comp.dsp Subject: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep22.162152.9850@uni-hamburg.de> Date: Sun, 22 Sep 1996 16:21:52 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: TIN [version 1.2 PL2] Lines: 11 How the 14 ASCII characters per node are encoded into the record groove. The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Graham Laurent Zyxel U-1496E @ 28,800 bps "Do not worship the copy." From ntakahashi@berkeley.edu Sun Sep 22 22:23:52 1996 Path: ashpoly!cascade!transat!ukc!fennimore!berkeley!ntakahashi From: ntakahashi@berkeley.edu (Nadine Takahashi) Newsgroups: comp.dsp Subject: Re: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep22.222352.2357@berkeley.edu> Date: Sun, 22 Sep 1996 22:23:52 GMT References: <1996Sep22.162152.9850@uni-hamburg.de> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Sep22.162152.9850@uni-hamburg.de>, glaurent@uni-hamburg.de (Graham Laurent) writes: > How the 14 ASCII characters per node are encoded into the record groove. > The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- === Nadine Takahashi === Dept of Electrical Engineering, UC Berkeley Department of EECS "The carrier frequency does not drift by accident." From jnilsson@berkeley.edu Tue Sep 24 13:51:52 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!berkeley!jnilsson From: jnilsson@berkeley.edu (Ji-woo Nilsson) Newsgroups: comp.dsp Subject: Re: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep24.135152.3768@berkeley.edu> Date: Tue, 24 Sep 1996 13:51:52 GMT References: <1996Sep22.162152.9850@uni-hamburg.de> <1996Sep22.222352.2357@berkeley.edu> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Sep22.222352.2357@berkeley.edu>, ntakahashi@berkeley.edu (Nadine Takahashi) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Ji-woo Nilsson *PLONK* filter active for trolls. Atari Falcon 030 - NetBSD 1.0 From ylaurent@cam.ac.uk Wed Sep 25 01:12:52 1996 Path: ashpoly!cascade!transat!ukc!fennimore!cam!ylaurent From: ylaurent@cam.ac.uk (Yuki Laurent) Newsgroups: comp.dsp Subject: Re: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep25.011252.2946@cam.ac.uk> Date: Wed, 25 Sep 1996 01:12:52 GMT References: <1996Sep22.162152.9850@uni-hamburg.de> <1996Sep22.222352.2357@berkeley.edu> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Sep22.222352.2357@berkeley.edu>, ntakahashi@berkeley.edu (Nadine Takahashi) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Yuki Laurent Hayes Optima 288 @ 14,400 bps "Hold for relay." From mstewart@panix.com Wed Sep 25 18:06:52 1996 Path: ashpoly!cascade!transat!ukc!fennimore!panix!mstewart From: mstewart@panix.com (Mateo Stewart) Newsgroups: comp.dsp Subject: Re: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep25.180652.6283@panix.com> Date: Wed, 25 Sep 1996 18:06:52 GMT References: <1996Sep22.162152.9850@uni-hamburg.de> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Sep22.162152.9850@uni-hamburg.de>, glaurent@uni-hamburg.de (Graham Laurent) writes: > How the 14 ASCII characters per node are encoded into the record groove. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- === Mateo Stewart === Dept of Electrical Engineering, Public Access Unix of New York "When every node is whole, the channel opens."