摘要
提出了一种新的高精度时差估计算法。传统的直接互相关测时差法,在低信噪比时的测量精度较差,不能满足高精度估计的要求。这种基于互模糊函数的算法与传统的直接互相关法相比,更适用于低信噪比情况下的时差估计。
A new approach is proposed for high resolution estimation of non-stationary time delay. Traditional direct cross-correlation for time delay estimation has a poor performance when SNR is low, and doesn't satisfy the demand of high resolution estimation. The method, based on cross-ambiguity function, is more suitable for time delay estimation in low SNR.
