From hgirard@uni-hamburg.de Fri Nov 01 12:42:37 1996 Path: ashpoly!cascade!transat!ukc!fennimore!uni-hamburg!hgirard From: hgirard@uni-hamburg.de (Hana Girard) Newsgroups: comp.dsp Subject: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Nov01.124237.6819@uni-hamburg.de> Date: Fri, 01 Nov 1996 12:42:37 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 11 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- Hana Girard Practical Peripherals 14.4 @ 28,800 bps "There are 14 nodes and only 10 countries. Count again." From kcampbell@delphi.com Fri Nov 01 13:52:37 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!delphi!kcampbell From: kcampbell@delphi.com (Karen Campbell) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Nov01.135237.2610@delphi.com> Date: Fri, 01 Nov 1996 13:52:37 GMT References: <1996Nov01.124237.6819@uni-hamburg.de> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Nov01.124237.6819@uni-hamburg.de>, hgirard@uni-hamburg.de (Hana Girard) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. > The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Karen Campbell Tape trading list upon request. SASE required for international mail. From jpopov@panix.com Sat Nov 02 01:24:37 1996 Path: ashpoly!cascade!mxgate!coyoacan!panix!jpopov From: jpopov@panix.com (Ji-woo Popov) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Nov02.012437.2013@panix.com> Date: Sat, 02 Nov 1996 01:24:37 GMT References: <1996Nov01.124237.6819@uni-hamburg.de> <1996Nov01.135237.2610@delphi.com> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1996Nov01.135237.2610@delphi.com>, kcampbell@delphi.com (Karen Campbell) 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! Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Ji-woo Popov Zyxel U-1496E @ 9600 Telebit bps "They will send a copy in my place." From akang@tum.de Sat Nov 02 17:46:37 1996 Path: ashpoly!cascade!transat!ukc!fennimore!tum!akang From: akang@tum.de (Amy Kang) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Nov02.174637.1869@tum.de> Date: Sat, 02 Nov 1996 17:46:37 GMT References: <1996Nov01.124237.6819@uni-hamburg.de> <1996Nov01.135237.2610@delphi.com> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Nov01.135237.2610@delphi.com>, kcampbell@delphi.com (Karen Campbell) writes: > Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. The Golay code confirms Marcus Hale's military background. The Voyager spacecraft and NATO satcom systems use the exact same code. -- Amy Kang US Robotics Courier V.34 @ 9600 Telebit bps "Measuring a record you own is listening, not piracy."