说明：  给定α、β系数条件下，验证常增益α-β滤波效果与观测信号噪声的关系 输入真实数据（位置+速度）和观测数据（位置）可以输出估计数据（位置+速度）和校正输出值（位置+速度）
(Under the condition of given alpha and beta coefficients, the relationship between the constant gain alpha filtering effect and the observed signal noise is verified. Input of real data (position + velocity) and observation data (position) yields estimated data (position + velocity) and corrected output values (position + velocity))