Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/7236
Title: 一种基于交叉证认技术的自适应小波变换及其在削减GPS多路径误差中的应用
Other Titles: An adaptive wavelet transform based on cross-validation and its application to mitigate GPS multipath effects
Authors: Zhong, P
Ding, XL 
Zheng, DW
Chen, W 
Huang, DF
Keywords: Cross-validation
Wavelet transform
GPS
Multipath effects
Issue Date: 2007
Publisher: 科学出版社
Source: 測繪学报 (Acta geodetica et cartographica sinica), Aug. 2007, v. 36, no. 3, p. 279-285 How to cite?
Journal: 測繪学报 (Acta geodetica et cartographica sinica) 
Abstract: 多路径效应影响是目前限制GPS定位精度进一步提高的瓶颈。提出用交叉证认技术自动识别小波分解的信号层,再通过小波重构实现降噪和信号提取,并将该方法应用于GPS多路径误差的削减中。对模拟数据和实际GPS观测资料的分析表明,该方法能合理分离不同噪声水平下资料序列中的信号和噪声;当噪声水平小于信号振幅的一半时,能成功分离资料序列中的高频信号。同时,运用该方法得到的多路径改正模型和GPS多路径效应的重复性,可有效地削弱多路径效应的影响,提高GPS定位精度。
GPS multipath disturbance is a bottleneck problem that limits accuracy of Global Positioning System(GPS) positioning.A method based on the technique of cross-validation to automatically identify wavelet signal layers is developed for separating noise from signals in data series,and applied to mitigate GPS multipath effects.Experiments with both simulated data series and real GPS observations show that the method is a powerful signal decomposer,which can successfully separate noise from signals as long as the noise level is lower than about half of the magnitude of the signals.A multipath correction model can be derived with the proposed method and the sidereal day-to-day repeating property of GPS multipath signals can be used to remove multipath effects in subsequent days of GPS observations,and therefore improve the quality of the GPS results.
URI: http://hdl.handle.net/10397/7236
ISSN: 1001-1595
Rights: © 2007 中国学术期刊电子杂志出版社。本内容的使用仅限于教育、科研之目的。
© 2007 China Academic Journal Electronic Publishing House. It is to be used strictly for educational and research use.
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Zhong_Adaptive_Wavelet_Transformation.pdf1.61 MBAdobe PDFView/Open
Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

2
Last Week
0
Last month
Citations as of Apr 10, 2016

Page view(s)

143
Last Week
5
Last month
Checked on Jun 26, 2017

Download(s)

43
Checked on Jun 26, 2017

Google ScholarTM

Check



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.