说明：  使用VB语言实现的卡尔曼滤波源程序， 其基本思想是：采用信号与噪声的状态空间模型，利用前一时刻地估计值和现时刻的观测值来更新对状态变量的估计，求出现时刻的估计值。它适合于实时处理和计算机运算。
(The use of VB language source realize the Kalman filter, the basic idea is: the use of signal-to-noise state-space model, one time use of the former and current estimated value of the observed values at all times to update the estimate of state variables, and emerged moments estimated value. It is suitable for real-time processing and computing.)