线性调频信号高耦合系数条件下的目标跟踪  

Target Tracking on Linear Frequency Modulation Signal and High Coupling Coefficient

作　　者：黄强[1] 王建卫[1] 

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《现代雷达》2014年第8期22-25,共4页Modern Radar

摘　　要：分析了常规线性调频信号距离走动的补偿方法,该方法在低耦合系数和低速目标情况下是适用的,但对于高耦合系数和高速目标已经不再适用。为此,提出了一种卡尔曼滤波器内部自适应补偿距离走动的方法,该方法保持了距离量测方程的可观测性,距离精度有较大改善。最后给出了相应的三维解耦滤波、直角坐标系扩展卡尔曼滤波扩展卡尔曼滤波和直角坐标系不敏卡尔曼滤波不敏卡尔波滤波算法,并通过仿真验证了文中方法的有效性以及3种滤波方法的精度。The conventional method of linear frequency modulation signal＇s distance error compensation is introduced. It is effective on the condition of low speed and low coupling coefficient. But the method is not fit for high coupling coefficient and high speed targets. So the new method is presented. The distance error compensation is adaptively accomplished in Kalman filter. The observ- ability of distance measurement function is kept. So the distance precision is approved evidently. At last, the methods of polar coordinates Kalman filter, extend Kalman filter（EKF） and unsented transformation Kalman filter（UKF） are presented. At the same time, the efficiency and precision of the new methods are verified by simulation.

关 键 词：线性调频 高耦合系数 距离走动 卡尔曼滤波 

分 类 号：TN953[电子电信—信号与信息处理]