针对斜坡道工程，提出平面图形梯度差值生长构建算法；
As for the ramp engineering, the author put forward the difference incremental algorithms for the planar graph gradients.
提出了一种根据滤波器系数梯度差值的自相关来计算步长的新的变步长自适应LMS算法。
This paper presented a new adaptive variable step size LMS algorithm, which controls step size according to the correlation of the gradient change of filter coefficients.
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