Baesd on the theory that moving target detectability can be enhanced by joint space - time processing with the application of frequency features and targets " characteristics , we focus our attention on particularies of sonars " target detection using underwater acoustic techniques and vehicle detection using computer vision techniques 本文注重在理论指导下的特殊性研究，即在联合利用时间信息、空间信息、频率信息以及目标特征能够提高运动目标检测能力的思想指导下，分别研究了声纳的运动目标检测和基于计算机视觉的交通车辆检测。
Sponsored by dmc - radar applied in a navy range , this dissertation focus on the low - altitude / low - angle radar target detection & tracking techniques . it contains four parts : in the first part , the models of sea - clutter and multipath propagation are studied , which affect the radar ' s detectability and tracking ability of low - altitude target seriously 结合海军某靶场dmc相控阵雷达的研制，着重研究了海面上低空目标雷达探测和跟踪测量的有关技术，论文分为四个部分：第一部分系统分析了海杂波与多径传播的建模与仿真问题。
