假设用一观测器从t=1秒开始对一个运动目标的距离进行连续地跟踪测量，假设观测的间隔为一秒钟，雷达到运动目标之间的距离为 常数

分析上述对象，建立系统模型，构造卡尔曼滤波器，编程计算，求：

距离S(t-5)的最佳平滑及估计误差，

-Suppose observer with a t = 1 seconds starting from a continuously moving target tracking distance measurement, assuming a second interval of observation, radar, the distance between the moving target is a constant analysis of the object, create a system model, Kalman filter structure, programming, computing, requirements: from the S (t-5) and estimate the optimal smoothing error,