SAR对地面车辆目标探测能力仿真系统研究

为了更有效评估合成孔径雷达(SAR)系统对地面目标的检测、识别性能,分析、衡量地面目标生存能力,根据SAR对地面目标探测的基本原理,结合计算机仿真技术,设计并开发了机载/星载SAR对地面车辆目标探测能力仿真系统。该系统通过对多种杂波背景下车辆目标原始回波的模拟,实现了多种算法的目标成像、双参数CFAR检测以及目标识别处理,进而实现对场坪/公路上固定或慢速运动车辆目标的检测及识别概率计算,由此进行车辆目标生存能力的评估。给出了仿真系统的总体架构和各模块的功能原理,并用仿真实例进行验证。

Study on SAR ground vehicle detection simulation system

Based on SAR ground detection principles and computer simulation technology,an airborne/spaceborne synthetic aperture radar(SAR) ground detection simulation system is designed and developed to better evaluate the ground detection ability of SAR.The system realizes multi-algorithm target imaging,dual-parameter CFAR(constant false-alarm rate) detecting and target recognition by simulating the raw signals of static/slowly-moving vehicles under various clutters;therefore the survivability of the vehicles is evaluated.The architecture of the system,the functions and principles of each module,as well as a demonstrating example are given.