主要研究反直升机被动声定位的精度问题．建立了定位的计算模型，重点分析了影响定位精度的因素，论证了保证定位精度所需要的采样率和采样分辨率，论证了采用高频窄带信号来提高时延估计计算精度的可行性，使得定位精度可以达到５％ 以上．还分析了一种压缩信号频谱方法来提高相关分析的分辨率，从而提高雷弹的定位精度．并在此基础上设计了实现目标识别和定位的系统结构原理框图． The main research anti-helicopter passive sound localization accuracy problem. The calculation model of positioning is established. The factors influencing the positioning accuracy are analyzed emphatically. The sampling rate and sampling resolution required to ensure the positioning accuracy are demonstrated. The feasibility of using high-frequency narrow-band signal to improve the accuracy of time-delay estimation is demonstrated. Positioning accuracy can reach 5% or more. A method of compressing the signal spectrum is also analyzed to improve the resolution of the correlation analysis, thereby improving the positioning accuracy of the leapfrog. On the basis of this, a system block diagram is designed to realize the target identification and positioning.