From bkang@delphi.com Mon Mar 11 02:02:50 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!delphi!bkang From: bkang@delphi.com (Bill Kang) Newsgroups: comp.dsp Subject: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Mar11.020250.6119@delphi.com> Date: Mon, 11 Mar 1996 02:02:50 GMT Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 How the 14 ASCII characters per node are encoded into the record groove. Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword. -- Bill Kang "They will send a copy in my place." Atari TT030 / TOS 4.04 From hsantos@purdue.edu Tue Mar 12 21:45:50 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!purdue!hsantos From: hsantos@purdue.edu (Hugo Santos) Newsgroups: comp.dsp Subject: Re: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Mar12.214550.9430@purdue.edu> Date: Tue, 12 Mar 1996 21:45:50 GMT References: <1996Mar11.020250.6119@delphi.com> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1996Mar11.020250.6119@delphi.com>, bkang@delphi.com (Bill Kang) writes: > How the 14 ASCII characters per node are encoded into the record groove. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Hugo Santos *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From skuznetsov@pacbell.net Thu Mar 14 09:45:50 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!pacbell!skuznetsov From: skuznetsov@pacbell.net (Seo-yeon Kuznetsov) Newsgroups: comp.dsp Subject: Re: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Mar14.094550.6961@pacbell.net> Date: Thu, 14 Mar 1996 09:45:50 GMT References: <1996Mar11.020250.6119@delphi.com> <1996Mar12.214550.9430@purdue.edu> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Mar12.214550.9430@purdue.edu>, hsantos@purdue.edu (Hugo Santos) 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. -- Seo-yeon Kuznetsov | skuznetsov@pacbell.net PGP Key fingerprint: 77F8 24B4 9EDD A0B7 "Keep the channels open."