A Novel Wireless Network-Based Carrier-Aided DGPS Algorithm Design and Implementation

H.W. Chen, Y.T. Chiang, F.R. Chang, H.S. Wang

Abstract:	In this paper, we designed a novel Carrier-Aided DGPS algorithm and implemented the service via Wi-Fi and/or mobile network. The main concept of Differential GPS (DGPS) is that there are some common errors between the receiver in the reference station, which we shall call “reference receiver”, and the receiver at the user side, which we shall call “client receiver”. The reference station is able to calculate the common errors and then send the correction messages to the user. In this paper, we have implemented DGPS service via Wi-Fi instead of radio signals to send the DGPS corrections. Furthermore, with the help of the carrier information, we also realize a novel differential Carrier Smoothed Code (CSC) method which is different and possesses many advantages in compared with traditional CSC algorithm. The algorithm is named Carrier-Aided DGPS (CADGPS). While the traditional CSC method is often used in a standalone receiver, the proposed differential CSC algorithm, as suggested by the name itself, is able to be used in the DGPS positioning mode. The experimental results will be presented in the paper. Consequently, the proposed CADGPS algorithm indeed performed well in the results.
Published in:	Proceedings of the 2009 International Technical Meeting of The Institute of Navigation January 26 - 28, 2009 Disney's Paradise Pier Hotel Anaheim, CA
Pages:	442 - 446
Cite this article:	Chen, H.W., Chiang, Y.T., Chang, F.R., Wang, H.S., "A Novel Wireless Network-Based Carrier-Aided DGPS Algorithm Design and Implementation," Proceedings of the 2009 International Technical Meeting of The Institute of Navigation, Anaheim, CA, January 2009, pp. 442-446.
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