水声定位中高分辨时延估计算法研究

High Resolution Time Delay Estimation Algorithm in Underwater Acoustic Localization

本文采用MUSIC算法解决水声定位中的多径信号分辨问题,给出了MUSIC时延估计算法的推导过程,并通过仿真对比了不同时延间隔和不同信噪比时采用MUSIC算法和传统的脉冲压缩算法的分辨能力,结果表明高分辨时延估计算法能够有效地分辨小于分辨单元的信号。

In this paper, the MUSIC algorithm is used to solve the multipath signal resolution problem in underwater acoustic localization. The derivation process of MUSIC delay estimation algorithm is given. The MUSIC algorithm and traditional pulse compress method are compared by different simulations for different delay intervals and different signal-to-noise ratios. The result shows that the high-resolution time delay estimation algorithm can effectively resolve signals smaller than the resolution unit.