From lkarlsson@kth.se Sun Sep 10 11:08:45 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kth!lkarlsson From: lkarlsson@kth.se (Lisa Karlsson) Newsgroups: comp.dsp Subject: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep10.110845.3227@kth.se> Date: Sun, 10 Sep 1995 11:08:45 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: Netscape 1.1N Lines: 11 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. 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. -- Lisa Karlsson "They will send a copy in my place." 486DX4/100 (FreeBSD 2.0.5) / SunOS 4.1.4 From fhernandez@cam.ac.uk Tue Sep 12 07:14:45 1995 Path: ashpoly!cascade!transat!ukc!fennimore!cam!fhernandez From: fhernandez@cam.ac.uk (Fiona Hernández) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep12.071445.4453@cam.ac.uk> Date: Tue, 12 Sep 1995 07:14:45 GMT References: <1995Sep10.110845.3227@kth.se> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Sep10.110845.3227@kth.se>, lkarlsson@kth.se (Lisa Karlsson) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- === Fiona Hernández === Dept of Electrical Engineering, University of Cambridge Computer Laboratory "Hold for relay." From mgonzalez@kth.se Thu Sep 14 10:09:45 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!kth!mgonzalez From: mgonzalez@kth.se (Mike González) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep14.100945.2382@kth.se> Date: Thu, 14 Sep 1995 10:09:45 GMT References: <1995Sep10.110845.3227@kth.se> <1995Sep12.071445.4453@cam.ac.uk> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Sep12.071445.4453@cam.ac.uk>, fhernandez@cam.ac.uk (Fiona 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. -- Mike González *PLONK* filter active for trolls. Sun SparcStation 20 - NetBSD 1.0 From snakamura@illinois.edu Fri Sep 15 08:36:45 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!illinois!snakamura From: snakamura@illinois.edu (Seo-yeon Nakamura) Newsgroups: comp.dsp Subject: Re: Question: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Sep15.083645.9395@illinois.edu> Date: Fri, 15 Sep 1995 08:36:45 GMT References: <1995Sep10.110845.3227@kth.se> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Sep10.110845.3227@kth.se>, lkarlsson@kth.se (Lisa Karlsson) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Seo-yeon Nakamura *PLONK* filter active for trolls. Commodore Amiga 500 (1MB OCS) - NetBSD 1.0