基于互相关平动补偿的外辐射源成像技术  

External illuminator imaging based on correlation motion compensation

作　　者：魏鹏[1] 王俊[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《系统工程与电子技术》2007年第9期1448-1452,共5页Systems Engineering and Electronics

基　　金：国家自然科学基金(60472087);国防科技预研基金(9140A07040707DZ0132)资助课题

摘　　要：基于已有的无源雷达成像算法均未考虑目标的平动补偿问题,利用短时间内两次回波的强相关性,通过估计两次回波相关函数的最大值来估计补偿因子,进行平动补偿,然后利用直接FFT成像方法来对运动目标进行成像。仿真实验表明提出的互相关平动补偿算法在考虑了目标实际运动情况下,可以获得良好的成像质量。The passive radar imaging algorithms available do not take the motion compensation of target into account. Since there exists a best correlation between two adjacent echoes in shot time,a motion compensationbased passive radar imaging algorithm is presented. The algorithm uses the maximal value of the correlation function between two adjacent echoes to estimate the compensation factor, and then reconstructs target image using direct FFT algorithm. Simulation test results show that the presented algorithm can achieve a better performance for an actual target moving model.

关 键 词：无源雷达成像 外辐射源 回波相关 平动补偿 

分 类 号：TN958.97[电子电信—信号与信息处理]