基于ISAR像序列的锥体目标进动及结构参数估计

发布时间：2018-05-20 00:12

本文选题：信号处理 + 进动锥体目标　；参考：《电子与信息学报》2015年05期

【摘要】：弹道目标进动及结构参数的提取是弹道导弹目标识别的关键。该文提出一种基于逆合成孔径雷达(ISAR)像序列实现锥体目标进动及结构参数估计的方法。基于电磁仿真数据及锥体目标的微动特性,忽略旋转对称锥体目标的自旋运动,采用距离-瞬时多普勒算法生成目标的ISAR像序列,之后采用CLEAN算法将ISAR像序列中的强散射源坐标信息提取出来;推导了锥体滑动型强散射源在成像平面上的投影轨迹公式,该公式可为进动锥体目标成像特性模拟及参数估计提供数学参考。分析观察视角对锥体目标ISAR像可观测强散射源的影响,给出了估计进动及结构参数的具体方法;最后仿真验证了成像算法及投影轨迹公式的正确性,并依据提取的坐标信息估计目标的进动及结构参数信息。
[Abstract]:The key to ballistic missile target recognition is the extraction of ballistic target precession and structural parameters. A method based on the inverse synthetic aperture radar (ISAR) image sequence is proposed to estimate the pyramidal target precession and structural parameters. The distance instantaneous Doppler algorithm is used to generate the ISAR image sequence of the target, then the CLEAN algorithm is used to extract the coordinate information of the strong scattering source in the ISAR image sequence, and the projection trajectory formula of the cone sliding strong scattering source on the imaging plane is derived. The formula can provide mathematical reference for the imaging characteristics simulation and parameter estimation of the precession cone target. The effect of the observation angle on the observable strong scattering source of the cone target ISAR is analyzed. The concrete methods for estimating the precession and structure parameters are given. Finally, the correctness of the imaging algorithm and the projection trajectory formula are verified, and the input and structural parameters of the target are estimated based on the extracted coordinate information.
【作者单位】：北京航空航天大学航空科学与工程学院;
【基金】：国家自然科学基金青年基金(51307004)资助课题
【分类号】：TN957.52

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