From jdubois@demon.co.uk Sat May 20 07:37:11 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!demon!jdubois From: jdubois@demon.co.uk (Jen Dubois) Newsgroups: comp.dsp Subject: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May20.073711.3706@demon.co.uk> Date: Sat, 20 May 1995 07:37:11 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword. -- Jen Dubois | jdubois@demon.co.uk PGP Key fingerprint: 09E0 C047 907C 6B7D "Keep the channels open." From sivanov@purdue.edu Mon May 22 02:15:11 1995 Path: ashpoly!cascade!transat!ukc!fennimore!purdue!sivanov From: sivanov@purdue.edu (Steve Ivanov) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May22.021511.8573@purdue.edu> Date: Mon, 22 May 1995 02:15:11 GMT References: <1995May20.073711.3706@demon.co.uk> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995May20.073711.3706@demon.co.uk>, jdubois@demon.co.uk (Jen Dubois) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Steve Ivanov Tape trading list upon request. SASE required for international mail. From tnilsson@clari.net Wed May 24 05:52:11 1995 Path: ashpoly!cascade!bigsur!clari!tnilsson From: tnilsson@clari.net (Thiago Nilsson) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May24.055211.6988@clari.net> Date: Wed, 24 May 1995 05:52:11 GMT References: <1995May20.073711.3706@demon.co.uk> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N Lines: 10 In article <1995May20.073711.3706@demon.co.uk>, jdubois@demon.co.uk (Jen Dubois) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. > The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Thiago Nilsson "Do not worship the copy." 486DX2/66 (Linux 1.2.13) / AmigaOS 3.1 From asilva@illinois.edu Wed May 24 19:12:11 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!illinois!asilva From: asilva@illinois.edu (Anja Silva) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May24.191211.3674@illinois.edu> Date: Wed, 24 May 1995 19:12:11 GMT References: <1995May20.073711.3706@demon.co.uk> <1995May24.055211.6988@clari.net> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995May24.055211.6988@clari.net>, tnilsson@clari.net (Thiago Nilsson) writes: > A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Anja Silva Tape trading list upon request. SASE required for international mail. From mgonzalez@purdue.edu Fri May 26 00:57:11 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!purdue!mgonzalez From: mgonzalez@purdue.edu (Marisol González) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May26.005711.1985@purdue.edu> Date: Fri, 26 May 1995 00:57:11 GMT References: <1995May20.073711.3706@demon.co.uk> <1995May24.055211.6988@clari.net> <1995May24.191211.3674@illinois.edu> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995May24.191211.3674@illinois.edu>, asilva@illinois.edu (Anja Silva) writes: > A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Marisol González *PLONK* filter active for trolls. 486DX4/100 (FreeBSD 2.0.5) - NetBSD 1.0