Unambiguous acquisition method and device for BOC(n,n) signals

The invention provides an unambiguous acquisition method and device for BOC (n, n) signals and comprises the steps: - acquire the digital intermediate frequency signal; - mix the signal With the local carrier wave to get a carrier cancellation signal; - put the carrier cancellation signal in a low-p...

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Bibliographische Detailangaben
Hauptverfasser:	FANG HAO, XINGLI GAN, XIYAN SUN, SHOUGANG ZHANG, YANGSHAN OU, GUISHENG LIAO, YUANFA JI, WELMIN ZHEN, BAOGUO WEI, LIANGFU PENG
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	The invention provides an unambiguous acquisition method and device for BOC (n, n) signals and comprises the steps: - acquire the digital intermediate frequency signal; - mix the signal With the local carrier wave to get a carrier cancellation signal; - put the carrier cancellation signal in a low-pass filter and put the signal sample into a partial matched filter, wherein the local code and the carrier cancellation signal are divided into several segments, and the two segments are multiplied accordingly to get several points, - put the accumulated value of the points cached under FFT to obtain the results to be calculated via the modulo operation to get the maximum value - compare to the threshold; - If smaller, indicate that the signal is not successfully acquired. At this time, move the code phase and repeat the steps above till the signal is captured.