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Based on the above improved wavelet threshold denoising algorithm, for simulated or measured drone signal data, the improved wavelet threshold denoising algorithm is processed, and then the generalized cross-correlation delay estimation algorithm is adopted for delay estimation. The algorithm processing flow is shown in the figure below:
Here, we adopt a method to determine the wavelet decomposition series algorithm of the signal by analyzing the energy proportion of the wavelet coefficients. The energy cumulative value of each coefficient vector is expressed as E sum (n), where N is the number of coefficient vectors., the smallest n value when E sum is greater than or equal to 85% is selected as the decomposition series of the wavelet denoising
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IEEE/ICACT20250181 Slide.10
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