Improved method of instantaneous frequency estimation based on wavelet ridge
基于改进小波脊提取算法的数字信号瞬时频率估计方法

In order to meet the precision requirement of digital signal instantaneous frequency estimation, an improved algorithm is proposed based on deep analyses of the principle of wavelet ridge. The major improvements of the algorithm include the arrangements on initial values, analytical wavelet's parameter and estimation precision of iterative process. Experimental signal results show that the improved algorithm is more robust and practical.