变形监测数据降噪方法分析

Analysis on Noise Reduction Method for Deformation Monitoring Data

对于变形较小的变形监测,由于监测数据受到噪声干扰,导致变形趋势不显著、产生的震荡不符合实际、对数据分析和趋势预报造成较大困难。在某水电站滑坡体监测中,采用小波去噪方法对监测数据进行预处理,并基于该数据进行拟合和变形趋势预报,与实测数据对比结果良好。

Regarding the deformation monitoring for slight deformation, the deformation tendency produced is not outstanding and concus- sion is not in compliance with actuality because the monitoring data is interfered by noise. This causes difficulty in analyzing the monito- ring data and predicating the deformation tendency. In the monitoring of a landslide mass of one hydropower station, the monitoring data is pre-proccssed by application of small wave to eliminate noise. And based on the processed data, the fitting and the defoormation tenden- cy predication are performed. Compared with the measured data, the processed data is excellent.