Filtering GPS time-series using a Vondrak filter and cross-validation

	Filtering GPS time-series using a Vondrak filter and cross-validation
	Zheng, DW ; Zhong, P ; Ding, XL ; Chen, W
刊名	JOURNAL OF GEODESY
	2005-08-01
卷号	79 期号:6-7 页码:363-369
关键词	cross-validation Vondrak filtering GPS multipath signals
英文摘要	Multipath disturbance is one of the most important error sources in high-accuracy global positioning system (GPS) positioning and navigation. A new data filtering method, based on the Vondrak filter and the technique of cross-validation, is developed for separating signals from noise in data series, and applied to mitigate GPS multipath effects in applications such as deformation monitoring. Both simulated data series and real GPS observations are used to test the proposed method. It is shown that the method can be used to successfully separate signals from noise at different noise levels, and for varying signal frequencies as long as the noise level is lower than the magnitude of the signals. A multipath model can be derived, based on the current-day GPS observations, with the proposed method and used to remove multipath errors in subsequent days of GPS observations when taking advantage of the sidereal day-to-day repeating characteristics of GPS multipath signals. Tests have shown that the reduction in the root mean square (RMS) values of the GPS errors ranges from 20% to 40% when the method is applied.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Geochemistry & Geophysics ; Remote Sensing
研究领域[WOS]	Geochemistry & Geophysics ; Remote Sensing
收录类别	SCI
语种	英语
WOS记录号	WOS:000232016000006
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/19475]
专题	上海天文台_天文地球动力学研究中心
作者单位	1.Hong Kong Polytech Univ, Dept Land Surveying & Geoinformat, Kowloon, Hong Kong, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Ctr Astrogeodynam Res, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Zheng, DW,Zhong, P,Ding, XL,et al. Filtering GPS time-series using a Vondrak filter and cross-validation[J]. JOURNAL OF GEODESY,2005,79(6-7):363-369.
APA	Zheng, DW,Zhong, P,Ding, XL,&Chen, W.(2005).Filtering GPS time-series using a Vondrak filter and cross-validation.JOURNAL OF GEODESY,79(6-7),363-369.
MLA	Zheng, DW,et al."Filtering GPS time-series using a Vondrak filter and cross-validation".JOURNAL OF GEODESY 79.6-7(2005):363-369.