NDLI: Wavelet Neural Network for Corrections Prediction in Single-Frequency GPS Users

Content Provider	Springer Nature Link
Author	Mosavi, M. R.
Copyright Year	2011
Abstract	Accurate and reliable position determination is a vital component in Global Positioning System (GPS). GPS positioning errors occur from the cumulative effects of receiver, satellite and atmosphere, and also due to the U.S. military intentionally such as Selective Availability (SA). In order to improve the accuracy of positions provided by GPS additional correction information may be used, such as Differential GPS (DGPS) or other sensors to enhance position reliability. The DGPS has the problem of slow updates. To overcome this limitation, DGPS corrections prediction has been proposed. The ability of Neural Networks (NNs) to discover nonlinear relationships in input data makes them ideal for modeling nonlinear dynamic systems. The Wavelet Neural Network (WNN) employing nonlinear wavelet basis function, which are localized in both the time and frequency space, has been developed as an alternative approach to nonlinear fitting problem. Particle Swarm Optimization (PSO), a global optimization method, is used to train the WNN. In this paper, a WNN trained by a PSO algorithm is proposed for DGPS corrections prediction in single-frequency GPS receivers. Experimental results show the feasibility and effectiveness of the proposed method. The results are analyzed and compared with WNN trained by Back Propagation (BP) algorithm. The experimental results show that WNN, trained by the PSO algorithm, is able to reduce RMS errors to less than 1 m with SA on and 0.6 m with SA off.
Starting Page	137
Ending Page	150
Page Count	14
File Format	PDF
ISSN	13704621
Journal	Neural Processing Letters
Volume Number	33
Issue Number	2
e-ISSN	1573773X
Language	English
Publisher	Springer US
Publisher Date	2011-01-15
Publisher Place	Boston
Access Restriction	Subscribed
Subject Keyword	DGPS corrections prediction Wavelet neural network Back propagation Particle swarm optimization Computational Intelligence Artificial Intelligence (incl. Robotics) Statistical Physics, Dynamical Systems and Complexity
Content Type	Text
Resource Type	Article
Subject	Neuroscience Artificial Intelligence Computer Networks and Communications Software

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