假设一物体围绕一圆周运动，角加速度是白噪声，观测噪声也是零均值的白噪声；编程使用卡尔曼滤波器实现运动物体的跟踪。-Suppose an object around a circular motion, the angular acceleration is white noise, observation noise is zero mean white noise　programming using a Kalman filter implementation to track moving objects.