From moliveira@inria.fr Mon Mar 11 21:17:53 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!inria!moliveira From: moliveira@inria.fr (Morag Oliveira) Newsgroups: comp.dsp Subject: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Mar11.211753.7082@inria.fr> Date: Mon, 11 Mar 1996 21:17:53 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: TIN [version 1.2 PL2] Lines: 11 How the 14 ASCII characters per node are encoded into the record groove. Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- Morag Oliveira "Tape doesn't lie at 02:14. Ears do." PC-9821Ap2 (NEC) / AmigaOS 3.1 From tramirez@cam.ac.uk Wed Mar 13 05:44:53 1996 Path: ashpoly!cascade!mxgate!coyoacan!cam!tramirez From: tramirez@cam.ac.uk (Takeshi Ramírez) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Mar13.054453.2641@cam.ac.uk> Date: Wed, 13 Mar 1996 05:44:53 GMT References: <1996Mar11.211753.7082@inria.fr> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1996Mar11.211753.7082@inria.fr>, moliveira@inria.fr (Morag Oliveira) writes: > How the 14 ASCII characters per node are encoded into the record groove. > 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. PGP Public key available via finger or upon request. -- Takeshi Ramírez "Hold for relay." Pentium 90 (OS/2 Warp) / System 7.5.1 From ichoi@ox.ac.uk Thu Mar 14 18:09:53 1996 Path: ashpoly!cascade!transat!ukc!fennimore!ox!ichoi From: ichoi@ox.ac.uk (Ines Choi) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Mar14.180953.1815@ox.ac.uk> Date: Thu, 14 Mar 1996 18:09:53 GMT References: <1996Mar11.211753.7082@inria.fr> <1996Mar13.054453.2641@cam.ac.uk> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: Netscape 1.1N Lines: 10 In article <1996Mar13.054453.2641@cam.ac.uk>, tramirez@cam.ac.uk (Takeshi Ramírez) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. > PGP Public key available via finger or upon request. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Ines Choi *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From lwatanabe@stanford.edu Fri Mar 15 20:42:53 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!stanford!lwatanabe From: lwatanabe@stanford.edu (Liam Watanabe) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Mar15.204253.3440@stanford.edu> Date: Fri, 15 Mar 1996 20:42:53 GMT References: <1996Mar11.211753.7082@inria.fr> <1996Mar13.054453.2641@cam.ac.uk> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Mar13.054453.2641@cam.ac.uk>, tramirez@cam.ac.uk (Takeshi Ramírez) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. > PGP Public key available via finger or upon request. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Liam Watanabe -- Stanford University Computer Systems Lab "Tape doesn't lie at 02:14. Ears do." From rrodriguez@tum.de Sat Mar 16 03:16:53 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!tum!rrodriguez From: rrodriguez@tum.de (Renata Rodríguez) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Mar16.031653.1058@tum.de> Date: Sat, 16 Mar 1996 03:16:53 GMT References: <1996Mar11.211753.7082@inria.fr> <1996Mar13.054453.2641@cam.ac.uk> <1996Mar14.180953.1815@ox.ac.uk> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1996Mar14.180953.1815@ox.ac.uk>, ichoi@ox.ac.uk (Ines Choi) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Renata Rodríguez Tape trading list upon request. SASE required for international mail.