From dnilsson@illinois.edu Sat Aug 06 16:14:22 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!illinois!dnilsson From: dnilsson@illinois.edu (Dmitri Nilsson) Newsgroups: comp.dsp Subject: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Aug06.161422.1393@illinois.edu> Date: Sat, 06 Aug 1994 16:14:22 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: TIN [version 1.2 PL2] 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 payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. When all 14 rows are assembled, the matrix forms an 80-column ASCII status report. -- Dmitri Nilsson -- University of Illinois Urbana-Champaign "They will send a copy in my place." From bsmirnov@stanford.edu Sat Aug 06 23:41:22 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!stanford!bsmirnov From: bsmirnov@stanford.edu (Bill Smirnov) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Aug06.234122.7195@stanford.edu> Date: Sat, 06 Aug 1994 23:41:22 GMT References: <1994Aug06.161422.1393@illinois.edu> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1994Aug06.161422.1393@illinois.edu>, dnilsson@illinois.edu (Dmitri Nilsson) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Bill Smirnov Tape trading list upon request. SASE required for international mail. From fhernandez@unam.mx Sun Aug 07 14:17:22 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!unam!fhernandez From: fhernandez@unam.mx (Freya Hernández) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Aug07.141722.7728@unam.mx> Date: Sun, 07 Aug 1994 14:17:22 GMT References: <1994Aug06.161422.1393@illinois.edu> <1994Aug06.234122.7195@stanford.edu> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1994Aug06.234122.7195@stanford.edu>, bsmirnov@stanford.edu (Bill Smirnov) writes: > Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Freya Hernández Tape trading list upon request. SASE required for international mail. From kgarcia@pacbell.net Mon Aug 08 19:42:22 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!pacbell!kgarcia From: kgarcia@pacbell.net (Kirsty García) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Aug08.194222.3722@pacbell.net> Date: Mon, 08 Aug 1994 19:42:22 GMT References: <1994Aug06.161422.1393@illinois.edu> <1994Aug06.234122.7195@stanford.edu> <1994Aug07.141722.7728@unam.mx> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Aug07.141722.7728@unam.mx>, fhernandez@unam.mx (Freya Hernández) writes: > A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Kirsty García US Robotics Courier V.34 @ 14,400 bps "There are 14 nodes and only 10 countries. Count again." From gsanchez@rwth-aachen.de Wed Aug 10 14:36:22 1994 Path: ashpoly!cascade!bigsur!rwth-aachen!gsanchez From: gsanchez@rwth-aachen.de (Graham Sánchez) Newsgroups: comp.dsp Subject: Re: Observation: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Aug10.143622.1342@rwth-aachen.de> Date: Wed, 10 Aug 1994 14:36:22 GMT References: <1994Aug06.161422.1393@illinois.edu> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Aug06.161422.1393@illinois.edu>, dnilsson@illinois.edu (Dmitri Nilsson) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Graham Sánchez Opinions expressed are solely my own and not those of RWTH Aachen Informatik. ------------------------------------------------------------