From erobertson@berkeley.edu Tue May 16 04:41:35 1995 Path: ashpoly!cascade!bigsur!berkeley!erobertson From: erobertson@berkeley.edu (Élodie Robertson) Newsgroups: comp.dsp Subject: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May16.044135.4928@berkeley.edu> Date: Tue, 16 May 1995 04:41:35 GMT Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 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). Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- Élodie Robertson Tape trading list upon request. SASE required for international mail. From ahernandez@cam.ac.uk Wed May 17 03:42:35 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cam!ahernandez From: ahernandez@cam.ac.uk (Andrei Hernández) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May17.034235.3528@cam.ac.uk> Date: Wed, 17 May 1995 03:42:35 GMT References: <1995May16.044135.4928@berkeley.edu> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995May16.044135.4928@berkeley.edu>, erobertson@berkeley.edu (Élodie Robertson) 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). The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Andrei Hernández -- University of Cambridge Computer Laboratory "There are 14 nodes and only 10 countries. Count again." From tpopov@netcom.com Thu May 18 18:49:35 1995 Path: ashpoly!cascade!bigsur!netcom!tpopov From: tpopov@netcom.com (Tyler Popov) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May18.184935.4280@netcom.com> Date: Thu, 18 May 1995 18:49:35 GMT References: <1995May16.044135.4928@berkeley.edu> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995May16.044135.4928@berkeley.edu>, erobertson@berkeley.edu (Élodie Robertson) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Tyler Popov *PLONK* filter active for trolls. PC-9821Ap2 (NEC) - NetBSD 1.0 From vkowalski@cern.ch Sat May 20 10:55:35 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cern!vkowalski From: vkowalski@cern.ch (Valeria Kowalski) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May20.105535.3074@cern.ch> Date: Sat, 20 May 1995 10:55:35 GMT References: <1995May16.044135.4928@berkeley.edu> <1995May18.184935.4280@netcom.com> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: Netscape 1.1N Lines: 9 In article <1995May18.184935.4280@netcom.com>, tpopov@netcom.com (Tyler Popov) writes: > The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Valeria Kowalski *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0 From epark@netcom.com Sun May 21 13:29:35 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!netcom!epark From: epark@netcom.com (Elaine Park) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995May21.132935.7390@netcom.com> Date: Sun, 21 May 1995 13:29:35 GMT References: <1995May16.044135.4928@berkeley.edu> <1995May17.034235.3528@cam.ac.uk> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995May17.034235.3528@cam.ac.uk>, ahernandez@cam.ac.uk (Andrei Hernández) writes: > The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Elaine Park SupraFAXModem 28.8 @ ISDN 64k bps "Marcus is not one man."