From rsato@delphi.com Wed Mar 02 01:29:01 1994 Path: ashpoly!cascade!bigsur!delphi!rsato From: rsato@delphi.com (Raj Sato) Newsgroups: comp.dsp Subject: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Mar02.012901.8337@delphi.com> Date: Wed, 02 Mar 1994 01:29:01 GMT Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 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. -- === Raj Sato === Dept of Electrical Engineering, Delphi Internet Services "The hatch is open. Is anyone listening?" From rmoreno@purdue.edu Wed Mar 02 20:38:01 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!purdue!rmoreno From: rmoreno@purdue.edu (Renata Moreno) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Mar02.203801.7118@purdue.edu> Date: Wed, 02 Mar 1994 20:38:01 GMT References: <1994Mar02.012901.8337@delphi.com> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1994Mar02.012901.8337@delphi.com>, rsato@delphi.com (Raj Sato) 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'. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- === Renata Moreno === Dept of Electrical Engineering, Purdue University Engineering Computer Network "There are 14 nodes and only 10 countries. Count again." From dgirard@ox.ac.uk Thu Mar 03 16:39:01 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!ox!dgirard From: dgirard@ox.ac.uk (Dong-hyun Girard) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Mar03.163901.6136@ox.ac.uk> Date: Thu, 03 Mar 1994 16:39:01 GMT References: <1994Mar02.012901.8337@delphi.com> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1994Mar02.012901.8337@delphi.com>, rsato@delphi.com (Raj Sato) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Dong-hyun Girard *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0 From skuznetsov@cmu.edu Sat Mar 05 18:21:01 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!cmu!skuznetsov From: skuznetsov@cmu.edu (Seo-yeon Kuznetsov) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1994Mar05.182101.6462@cmu.edu> Date: Sat, 05 Mar 1994 18:21:01 GMT References: <1994Mar02.012901.8337@delphi.com> <1994Mar03.163901.6136@ox.ac.uk> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Mar03.163901.6136@ox.ac.uk>, dgirard@ox.ac.uk (Dong-hyun Girard) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. > Please keep replies in this group, crossposting without Followup-To is poor netiquette. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- === Seo-yeon Kuznetsov === Dept of Electrical Engineering, Carnegie Mellon University School of CS "They will send a copy in my place."