摘要
基于小波的多分辨率功能,对苏通大桥索塔高频度监测数据序列进行多层分解,将不同频级的噪声序列分离出来。然后借助噪声分析方法,估算每层噪声序列的谱指数,进而对噪声进行判别,结果表明GPS动态监测数据主要含有白噪声与闪烁噪声,而随机漫步噪声不明显,为后续大桥监测数据处理、信号降噪、误差分析提供参考。
Based on wavelet multi-resolution function, it presents the multilayer decomposition of Sutong Bridge pylon high frequency monitoring data sequence, and levels the noise sequences of different frequency. Then it estimates the spectral index of each noise sequence by using noise analysis method, thereby discriminating against noise. The result shows that the GPS dynamic monitoring data contains mainly white noise and flicker noise,while random walk noise is not obvious. It can provide a reference for the subsequent processing, noise reduction and error analysis of the bridge monitoring data.
出处
《黑龙江工程学院学报》
CAS
2014年第1期30-33,共4页
Journal of Heilongjiang Institute of Technology
关键词
GPS监测序列
多分辨率
小波分解
噪声
谱指数
GPS monitoring sequence
multi-resolution
wavelet decomposition
noise
spectral index
