Estimating Phase Difference and Lead of Discrete Cosine Ultrasonic Wave Signals Based on Hilbert Transform and Lissajous Figure Features


It is required to measure the phase difference and lead of two trains of cosine ultrasonic wave (CSUW) in underwater positioning with a super short base line (SSBL) based on a sound beacon. This paper presents an improved method to estimate the phase difference based on Hilbert transform, and does an effective one to identify their phase lead based on… (More)

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