As the wavelet coefficient is affected by threshold during wavelet decomposition, that is, noise is restrained, the model is closed to the deformation rule and prediction is more exact.

• 由于在小波分解过程中对小波系数作用于阈值，即对监测过程受到的干扰进行了消除或降低，从而使建立的预测模型更接近于变形体规律，预测更准确。