2023
DOI: 10.1117/1.oe.62.2.028102
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Beat frequency extraction method of high speed and high noise Doppler signal based on double correction

Abstract: When detecting ultrahigh speed micro targets, because the photon Doppler signal will be seriously interfered with by high-frequency noise, it is difficult to accurately extract the beat frequency information, resulting in serious speed demodulation error. Therefore, we propose a beat frequency extraction method for high-speed and high-noise Doppler signals based on double correction, which can accurately correct the beat frequency signals of high-frequency noise interference. First, the ratio correction method… Show more

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