说明：  目标运动和卡尔曼跟踪的仿真程序，给出了系统状态转移矩阵和测量过程，以及协方差和增益。通过绘图得出仿真轨迹和真实轨迹的平均误差。有助于研究目标航迹跟踪
(Target motion and Kalman tracking simulation program, the system state transition matrix and measurement process, as well as the covariance and gain. Obtained by drawing the average error of the simulation trajectory and real trajectory. Help researchers target trajectory tracking)