基于Daubechies小波分析的单频大采样率GPS周跳探测  

Single Frequency Long Sampling Rate GPS Carrier Phase Circle-slip Detection Based on Daubechies Wavelets Analysis

作　　者：蒋俊华[1] 蒋代杨 汪闽[1] 汪伟[1] 

机构地区：[1]天津市测绘院,天津300381 [2]天津市勘察院,天津300191

出　　处：《城市勘测》2012年第4期112-114,共3页Urban Geotechnical Investigation & Surveying

摘　　要：提出了用星间-历元间双差观测值结合多尺度小波分析的方法来探测大采样率单频GPS数据周跳。并利用相邻两个细尺度层的小波变换构成空间屏蔽滤波器对小波探测结果去噪。经单频实测载波相位数据的周跳探测结果表明:该方法对2周以上的周跳可以很明显的检测出来。The method of detecting single frequency long sampling rage GPS carrier phase circle slip with satelliteepoch deference observation based on muhi resolution daubechies wavelet theory is presented in this article. The detection results are denoise by spatial filter which makes up of border wavelet transformation of detail level results. And this method is proved effective to detect larger than 2 circles slip certificated by real sampling data.

关 键 词：小波分析 单频GPS 大采样率 周跳 空间屏蔽滤波器 

分 类 号：P228.43[天文地球—大地测量学与测量工程]