From ekarlsson@cmu.edu Wed Aug 28 04:54:37 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!cmu!ekarlsson From: ekarlsson@cmu.edu (Élodie Karlsson) Newsgroups: comp.dsp Subject: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Aug28.045437.2556@cmu.edu> Date: Wed, 28 Aug 1996 04:54:37 GMT Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: WinVN 0.99.5 Lines: 11 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. -- Élodie Karlsson SupraFAXModem 28.8 @ ISDN 64k bps "We don't sign stars. We build them." From esantos@pipeline.com Wed Aug 28 22:02:37 1996 Path: ashpoly!cascade!bigsur!pipeline!esantos From: esantos@pipeline.com (Emi Santos) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Aug28.220237.6419@pipeline.com> Date: Wed, 28 Aug 1996 22:02:37 GMT References: <1996Aug28.045437.2556@cmu.edu> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1996Aug28.045437.2556@cmu.edu>, ekarlsson@cmu.edu (Élodie Karlsson) 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! If you are posting from AOL, please read RFC 1036 before posting again. -- Emi Santos Opinions expressed are solely my own and not those of The Pipeline Internet Network. ------------------------------------------------------------ From givanov@purdue.edu Fri Aug 30 21:13:37 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!purdue!givanov From: givanov@purdue.edu (Graham Ivanov) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Aug30.211337.1377@purdue.edu> Date: Fri, 30 Aug 1996 21:13:37 GMT References: <1996Aug28.045437.2556@cmu.edu> <1996Aug28.220237.6419@pipeline.com> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1996Aug28.220237.6419@pipeline.com>, esantos@pipeline.com (Emi Santos) writes: > A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! > If you are posting from AOL, please read RFC 1036 before posting again. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Graham Ivanov *PLONK* filter active for trolls. Acorn RiscPC 600 - NetBSD 1.0 From heriksson@cam.ac.uk Sat Aug 31 15:52:37 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cam!heriksson From: heriksson@cam.ac.uk (Hana Eriksson) Newsgroups: comp.dsp Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Aug31.155237.2831@cam.ac.uk> Date: Sat, 31 Aug 1996 15:52:37 GMT References: <1996Aug28.045437.2556@cmu.edu> <1996Aug28.220237.6419@pipeline.com> <1996Aug30.211337.1377@purdue.edu> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Aug30.211337.1377@purdue.edu>, givanov@purdue.edu (Graham Ivanov) writes: > The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Hana Eriksson | heriksson@cam.ac.uk PGP Key fingerprint: 7120 BABA 0803 C092 "Keep the channels open."