Study on the methods of GPS double-difference observation digital de-noising based on wavelet analysis
Xiangyang Chen · Engineering of Surveying and Mapping · 2011
The non-modeled errors,such as multi-path errors that cannot be removed by using double-difference method and the noise caused by receivers while observing,will greatly affect the accuracy of GPS.The article deals with the de-noising of GPS double-differenced observation series based on the theory of wavelet analysis.The results show that wavelet de-noising principle can effectively help extracting deformation features from GPS observation series polluted by strong noise,improve the validity of baseline processing,enhance the accuracy of GPS,and solve the limitation of GPS dynamic monitoring caused by traditional technology.