地声监测及识别

遥远战场地声信号监测识别系统是国外正在兴起的一种无人自动侦察系统。本文通过对大地传输特性的分析,得出了轮式车辆、履带式车辆和人运动时地声信号的特征。基于此特性,设计出目标分类的特征提取方法,选择了合适的信号处理方法和识别算法。研制了以主从式计算机系统为核心的交互式高速地声信号处理系统;以优化设计思想设计了特征提取算法和识别算法。最后以实验数据为基础提取出特征提取算法和识别算法中的一些参数,并对信号处理系统、特征提取算法和识别算法进行了检验,得到了很好的识别准确度,这表明该系统和各种算法的设计思想是正确可行的。

Monitoring and Identifying the Sound Signal Caused by Ground Vibration

Abstract The system for monitoring and identifying the sound signal in remote battlefield is a kind of unmanned automatic reconnaissance system being developed at abroad. In this paper, the sound signal characteristic of moving wheel vehicle, track vehicle and mankind is obtained by analysing the propagation characteristics of the ground. Based upon the characteristics, a characteristic extract method of target classification is proposed. appropriate signal processing method and identification algorithm are selected. A interchangeable high-speed sound signal processing system which takes the master-slave computer system as kernal has been developed. The algorithms of characteristic extract and identification are put forward according to the idea of optimum design. At last, some parameters in the algorithms is drawn out on the basis of experiment data. Test for signal processing system and the algorithms is also made. The procision of identification is satis- factory. All these indicate the correctness and feasibility of the system and the algorithms.