From ssilva@rwth-aachen.de Fri Feb 24 20:47:52 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!rwth-aachen!ssilva From: ssilva@rwth-aachen.de (Steve Silva) Newsgroups: comp.dsp Subject: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb24.204752.7562@rwth-aachen.de> Date: Fri, 24 Feb 1995 20:47:52 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 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 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. -- Steve Silva Hayes Optima 288 @ 9600 Telebit bps "There are 14 nodes and only 10 countries. Count again." From sweber@uu.net Sun Feb 26 10:27:52 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uu!sweber From: sweber@uu.net (Sergei Weber) Newsgroups: comp.dsp Subject: Re: [SPECULATION] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb26.102752.2322@uu.net> Date: Sun, 26 Feb 1995 10:27:52 GMT References: <1995Feb24.204752.7562@rwth-aachen.de> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1995Feb24.204752.7562@rwth-aachen.de>, ssilva@rwth-aachen.de (Steve Silva) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. > Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. PGP Public key available via finger or upon request. -- === Sergei Weber === Dept of Electrical Engineering, UUNET Technologies, Falls Church VA "Marcus is not one man."