一种频率快速搜索方法的研究

A study of a fast frequency searching method

本文讨论了窄带信号瞬时频率的一维搜索方法,在梯度下降搜索算法的基础上,提出了一种改进的 Powell 法,这种方法使用增阶的 AR 模型,利用FFT 算法的快速形式,提高了计算速度。模拟结果证明,所提出的方法具有更高的精度和搜索速度。

One dimension-searching method for the narrow-band signal instantaneous frequen- cies is discussed.Based on the gradient searching algorithm,a new improved Powell meth- od,which uses increased orders AR models to improve computation speed by the FFT algorithm,is presented.The computer simulation results show that the method presented has better accuracy and faster searching speed.