基于三站一维距离像融合的弹道目标特征提取方法研究

一维距离像是超宽带雷达目标识别的重要特征之一,基于多站一维距离像的目标特征提取技术是近来的研究方向。依据弹道目标的微动特性,推导了微动弹道目标的时间-距离像模型,然后通过比较各散射点时间-距离像正弦曲线参数之间的关系,实现了多个雷达观测视角下弹头目标距离像的匹配,在此基础上,利用三站一维距离像重构了锥体弹头上各散射点的三维空间相对位置,最后对锥体弹头的各个参数进行了估计。仿真结果表明了本文方法的正确性和有效性。

Study on Feature Extraction Method of Ballistic Target Based on Three-Station Range Profiles

Range profile is one of the most important features in UWB radar target recognition,and the technique for target feature extraction based on Multi-station becomes a research direction recently.The mathematical model of ballistic target micro-motion time-profile is derived.Then the range profiles obtained from different radar stations are matched according to the sinusoidal parameter in time-profile image.Based on these data,spatial relative position of scatters on cone-shaped warhead is rebuilt by using the range profiles obtained from three stations.Finally,parameters of cone-shaped warhead are estimated.Simulation results show that the presented method is effective and applicable.