NDLI: A New Algorithm of Detecting and Correction Cycle Slips in Dual-Frequency GPS

Content Provider	IEEE Xplore Digital Library
Author	Gun, Li. Hu Yong-hui Zhou Wei
Copyright Year	2006
Description	Author affiliation: Nat. Time Service Center, Chinese Acad. of Sci., Xi'an (Gun, Li.; Hu Yong-hui)
Abstract	Detecting and reconstructing the cycle slip are very important in GPS carrier phase time transfer (GPS CPTT). Many kinds of algorithms have been developed in the past several years especially using GIPSY OASIS software developed by JPL (Jet Propulsion Laboratory) for estimating ambiguity resolution and solving cycle slip problem. NTSC has installed one geodetic like dual frequency Ashtech Z12T receiver for GPS CPTT investigation. The GPS carrier phase time transfer data have been obtained using this receiver at NTSC (National time service center, Chinese Academy of Sciences). In this paper, a new algorithm of TWO STEP method for detecting outliers and cycle slips in dual-frequency GPS is presented. Firstly, using Kalman filter in the model of the 3rd order polynomial for a larger cycle slips, such as larger than 2cycles. Secondly, estimating and reconstruction small cycle slips(less than 1) by using Daubechies wavelet. The details of algorithm are given. The processing result using the algorithm is presented. It is applicable to the carrier phase measurement with one sample per 30 second. The calculated results using data of GPS on NTSC show that the algorithm is so efficiency that it can accurately find the small cycle slip less than one cycle
Starting Page	622
Ending Page	627
File Size	255640
Page Count	6
File Format	PDF
ISBN	1424400740
DOI	10.1109/FREQ.2006.275459
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Global Positioning System Software algorithms Frequency Atmospheric modeling Phase measurement Data processing Satellites Delay effects Terrestrial atmosphere Solid modeling Wavelet Time transfer GPS carrier phase time transfer Cycle slip Kalman filter
Content Type	Text
Resource Type	Article

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