Research the Ameliorative Method of Wavelet Ridgeline Based Direct Wavelet Transform

In this paper, we had advanced the ameliorative method of wavelet ridgeline based direct wavelet transform, in research based on the intra-pulse characteristic analysis method based on wavelet transform theory. It can effective estimate the phase mutations of the phase-coded signals, reduce the date of the initial frequency estimation error because of interruption and boundary effect, obtain accurate intra-pulse modulation parameters, improve anti-noise ability. The method can solve the complex electromagnetic environment, aviation electronic reconnaissance system for phase-coded signal edc, special system radar signal of reconnaissance.