From atakahashi@demon.co.uk Sun Jan 15 16:17:49 1995 Path: ashpoly!cascade!bigsur!demon!atakahashi From: atakahashi@demon.co.uk (Anja Takahashi) Newsgroups: comp.dsp Subject: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jan15.161749.2570@demon.co.uk> Date: Sun, 15 Jan 1995 16:17:49 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 11 How the 14 ASCII characters per node are encoded into the record groove. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code. Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword. -- Anja Takahashi Zyxel U-1496E @ ISDN 64k bps "Extraordinary claims require extraordinary spectra." From mduarte@kiae.su Tue Jan 17 12:25:49 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!kiae!mduarte From: mduarte@kiae.su (Mathieu Duarte) Newsgroups: comp.dsp Subject: Re: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jan17.122549.5183@kiae.su> Date: Tue, 17 Jan 1995 12:25:49 GMT References: <1995Jan15.161749.2570@demon.co.uk> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jan15.161749.2570@demon.co.uk>, atakahashi@demon.co.uk (Anja Takahashi) writes: > How the 14 ASCII characters per node are encoded into the record groove. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Mathieu Duarte Zyxel U-1496E @ 14,400 bps "Hardware is temporary. The signal survives." From jsilva@unam.mx Wed Jan 18 08:23:49 1995 Path: ashpoly!cascade!mxgate!coyoacan!unam!jsilva From: jsilva@unam.mx (Jens Silva) Newsgroups: comp.dsp Subject: Re: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jan18.082349.7311@unam.mx> Date: Wed, 18 Jan 1995 08:23:49 GMT References: <1995Jan15.161749.2570@demon.co.uk> <1995Jan17.122549.5183@kiae.su> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Jan17.122549.5183@kiae.su>, mduarte@kiae.su (Mathieu Duarte) writes: > Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Jens Silva Tape trading list upon request. SASE required for international mail.