【作者】 刘艺欣； 王俊； 陈鹏辉； 陈轩；

【Author】 LIU Yixin;WANG Jun;CHEN Penghui;CHEN Xuan;School of Electronic and Information Engineering, Beihang University;Science and Technology on Electromagnetic Scattering Laboratory;

【机构】 北京航空航天大学电子信息工程学院； 电磁散射重点实验室；

【摘要】 动态目标具有周期性强、姿态灵活多变等特点,其复杂性给雷达探测带来极大挑战。对于微运动特征呈现周期性变化的快速运动目标,本文提出了一种基于稀疏性思想的电磁散射特性快速仿真方法。首先,本文验证了目标RCS序列在短观测时间内具有随姿态角周期性变化的规律。其次,基于雷达视线角随目标运动缓慢变化的特点,本文提出一种稀疏观测策略,利用隔段观测得到的RCS序列,通过RCS序列周期性填充和幅度变化曲线拟合,恢复出全航迹完整RCS序列。最后,通过统计各窄带特征的误差验证了该方法的有效性。更多还原

【Abstract】 Dynamic targets are characterized by obvious periodicity and flexible attitude, their complexity brings great challenges to radar detection. For the fast-moving targets whose micro-motion characteristic shows periodic change, a rapid simulation method of electromagnetic scattering characteristics based on sparsity is proposed. First, it is verified that the RCS sequence of the target changes periodically with the attitude angle in a short observation time. Secondly, based on the characteristics of the radar sight slowly changing with the movement of the target, a sparsity observation strategy is proposed. Using the sparse RCS sequence obtained by the interval observation, the complete RCS sequence of the whole track is restored by filling the RCS sequence periodically and fitting the amplitude change curve. Finally, the error of each narrowband feature is used to verify the effectiveness of the sparsity method.更多还原