双基地MIMO雷达目标参数估计及动态跟踪新算法  

A novel Algorithm for Target Parameter Estimation and Dynamic Tracking in Bistatic MIMO Radar system

作　　者：李丽[1,2] 邱天爽[1] 

机构地区：[1]大连理工大学电子信息与电气工程学部,辽宁大连116024 [2]大连大学信息工程学院,辽宁大连116622

出　　处：《信号处理》2014年第2期155-162,共8页Journal of Signal Processing

基　　金：国家自然科学基金资助项目(61172108;61139001;81241059);国家科技支撑计划项目(2012BAJ8B06)

摘　　要：民航地空通信受到无线电干扰会严重危机民航飞机的正常飞行。本文在深入研究地面干扰源定位问题的背景下,提出基于分数阶模糊函数的飞机动态跟踪算法。首先提出一个新的回波信号模型,通过搜索分数阶模糊函数的峰值点,实现了对多普勒频率的瞬时估计,并提出基于分数阶模糊函数的投影近似子空间角度跟踪算法(FAF-PAST),实现了2维发射角和2维接收角的联合动态递推估计。接下来根据阵列模型图中的几何关系,推导出了飞机的运动速度及三维位置坐标,从而实现飞机目标的动态跟踪,为后续地面干扰源定位打下良好的基础。仿真结果表明了该文提出的模型和算法的正确性和可行性。The ground-air communication of civil aviation is interfered by radios,which has seriously endangered the normal flight of civil airplanes.This paper proposes an airplane dynamic tracking algorithm based on the study of the interference localization.Firstly,a novel signal model to accurately estimate parameters of the airplane is proposed.A method for instantaneous Doppler frequency estimation based on peak searching of the fractional ambiguity function （FAF） is proposed,and a method of projection approximation subspace tracking based on the fractional ambiguity function （FAF-PAST） is proposed to estimate the azimuth angle and elevation angle.Furthermore,the velocity and location of the airplane are estimated by employing array geometry.As a result,the airplane tracking is achieved in bistatic radar,laying the foundations for interference localization.The correctness and effectiveness of the orooosed method are verified with the computer simulation.

关 键 词：干扰源定位 多普勒频率 分数阶模糊函数 投影近似子空间角度跟踪 动态跟踪 

分 类 号：TN911.7[电子电信—通信与信息系统]