中文说明：利用matlab，仿真了二维匀速运动的雷达目标轨迹，基于距离观测量利用扩展卡尔曼滤波器进行跟踪，跟踪结果良好，本程序是初学卡尔曼滤波的很好例子，在此基础上可以进行修改，
English Description：
Using MATLAB, the simulation of the two-dimensional motion of the radar target track, based on distance measurements using extended Kalman filter for tracking, the tracking results are good, the program is Kalman filter is a good example of beginners, on this basis can be modified.