波动方程递推求解后得到的去运动模糊图像，复原结果比较自然，没有振铃效应和畸变，但是会出现明显的累积噪声。
An image restored by a recursive solution of traveling wave equation is natural to visual interpretation, without ringing effect and distortion emerging, but accumulated noise appears on it obviously.
采用线性畸变模型，由最小二乘法解线性方程组得到摄像系统畸变模型的畸变系数。
Linear distortion model is used and distortion coefficients are obtained by resolving over-determined linear equations and least square method.
结合实际重力仪的系统状态方程和系统量测方程，提出了级联卡尔曼滤波方法，并将其应用于重力异常畸变信号的校正处理中。
Combined with the system state equation and the measurement equation, a new method of the cascade Kalman filter is proposed and applied to the correction of gravity anomaly distortion.
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