Doppler speed the sonar output signal processing based on translation invariant wavelet transform. Integrated navigation system for underwater vehicle using the Doppler-velocity sonar output signal using translation invariant wavelet transform multiresolution analysis method using Daubechies wavelet function, using a semi-soft threshold denoising method to accurately estimate the Doppler sonar frequency shift in the case of low signal-to-noise ratio output signal with noise from the Doppler extract the original signal. Simulation results show that: 4 layer wavelet decomposition algorithm to calculate the amount decreases, effectively eliminate the Doppler noise, thereby improving the accuracy of the underwater integrated navigation system.

基于平移不变小波变换的多普勒速度声纳输出信号处理.pdf

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