Title :
Rapid acquisition of low signal-to-noise carriers
Author :
Luttrell, S.P. ; Pritchard, J.A.S.
Author_Institution :
R. Signals & Radar Esabl., Malvern, UK
Abstract :
A parallel bank of 1-bit digital filters is proposed as a solution to the rapid carrier acquisition problem in satellite communications. The hardware is compact and cheap, and using a crude threshold detection criterion, it can localise a 30 dBHz carrier to within 100 Hz in a total bandwidth of 12 kHz in about 60 ms. A theoretical analysis of the system performance is also presented together with predictions of its statistical behaviour, which will assist in the design of more sophisticated signal detection algorithms.<>
Keywords :
digital filters; ferromagnetic-paramagnetic transitions; satellite relay systems; signal detection; 1 bit; 12 kHz; 60 ms; SNR; digital filters; low signal-to-noise carriers; rapid carrier acquisition; satellite communications; signal detection algorithms; statistical behaviour predictions; system performance; theoretical analysis; Digital filters; Satellite communication; Signal detection;
Journal_Title :
Communications, Speech and Vision, IEE Proceedings I
