作者: John Kilvington
DOI:
关键词: Signal 、 Electronic engineering 、 Fast Fourier transform 、 Baseband 、 Satellite system 、 Multiplier (Fourier analysis) 、 Antenna (radio) 、 Spread spectrum 、 Global Positioning System 、 Engineering
摘要: A receiver for a navigation satellite system such as NAVSTAR, including an antenna receiving incoming coded, time-based, spread spectrum signal which includes navigational data from plurality, P, of satellites, circuit deriving baseband I and Q components each the signals, circuitry digitizing components, Fast Fourier Transform (FFT) processor transforming digitized their respective codes, multiplier multiplying together transformed codes derived P signals to inverse transform then determine correlation peaks in signals.