Volume 11, Issue 3 (Sep. 2015 2015)                   IJEEE 2015, 11(3): 184-194 | Back to browse issues page

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Mosavi M R, Shokhmzan Z. Spoofing Mitigation of GPS Receiver using Least Mean Squares-Based Adaptive Filter. IJEEE. 2015; 11 (3) :184-194
URL: http://ijeee.iust.ac.ir/article-1-764-en.html
Abstract:   (2689 Views)

The Global Positioning System (GPS) signals are very weak signal over wireless channels, so they are vulnerable to in-band interferences. Therefore, even a low-power interference can easily spoof GPS receivers. Among the variety of GPS signal interference, spoofing is considered as the most dangerous intentional interference. The spoofing effects can mitigate with an appropriate strategy in the receiver. In this paper, we use methods of adaptive filter based on Least Mean Squares (LMS) and Normalized Least Mean Squares (NLMS) algorithms in-order to defense against spoofing. The proposed techniques are applied in the acquisition stage of the receiver. The proposed methods have been implemented on real dataset. The results explain that the suggested algorithms significantly decrease spoofing. Also, they improve Position Dilution of Precision (PDOP) parameter. Based on the results, NLMS algorithm has better performance than LMS algorithm.


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Type of Study: Research Paper | Subject: Satellite Communications
Received: 2015/02/23 | Accepted: 2015/10/20 | Published: 2015/10/20