匀加速转动目标转动参数联合估计  

Combined Rotating Parameters Estimation for Uniformly Accelerated Rotation Targets

作　　者：贺思三[1] 赵会宁[1] 张永顺[1] 

机构地区：[1]空军工程大学防空反导学院,西安710051

出　　处：《电子与信息学报》2014年第9期2187-2193,共7页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61372166)资助课题

摘　　要：匀加速转动目标运动参数估计是逆合成孔径雷达(ISAR)成像中的一类常见问题。该文在给出匀加速转动目标雷达回波信号模型的基础上,推导了利用线性调频信号对匀加速转动目标雷达回波进行拟合时所得参数与目标转动速度参数之间的关系。在此基础上,进一步提出一种匀加速转动目标转动参数联合估计方法,实现了转动参数的无偏估计。仿真结果验证了该算法的有效性。A common problem in Inverse Synthetic Aperture Radar （ISAR） imaging is to estimate the rotating parameters for uniformly accelerated rotation target. At first, the radar echo model for uniformly accelerated rotation target is introduced. Then, the relationship between the extracted polynomial phase parameters and rotation parameters is deduced when the Linear Frequency Modulation （LFM） model is utilized to extract the prominent scattering centers from profile sequences. An algorithm is proposed on this basis which can estimate the rotating parameters unbiased for uniformly accelerated rotation target. Simulation results verify the effectiveness of the proposed algorithm.

关 键 词：逆合成孔径雷达 非均匀转动 参数估计 无偏估计 

分 类 号：TN957.52[电子电信—信号与信息处理]