Volume 14, Issue 3 (September 2018)                   IJEEE 2018, 14(3): 222-235 | Back to browse issues page

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Teymouri P, Mosavi M R, Moazedi M. Delay Spoofing Reduction in GPS Navigation System based on Time and Transform Domain Adaptive Filtering. IJEEE 2018; 14 (3) :222-235
URL: http://ijeee.iust.ac.ir/article-1-1202-en.html
Delay Spoofing Reduction in GPS Navigation System based on Time and Transform Domain Adaptive Filtering
P. Teymouri , M. R. Mosavi , M. Moazedi
Abstract:   (4068 Views)
Due to widespread use of Global Positioning System (GPS) in different applications, the issue of GPS signal interference cancelation is becoming an increasing concern. One of the most important intentional interferences is spoofing signals. An effective interference (delay spoof) reduction method based on adaptive filtering is developed in this paper. The principle of method is using adaptive filters to eliminate interference, obtain an estimate of interfering signal and subtract that from the corrupted signal. So, what remains in the output is the desired signal. Here, for updating the filter coefficients adaptive algorithms in both time (statistical and deterministic) and transform domain will be studied. The proposed adaptive filter is applied to a batch of spoofing GPS data in pseudo-range level. The results indicate that all investigated algorithms are able to reduce positioning steady-state miss-adjustment up to 70 percent. In this context, the variable step-size least mean square algorithm performs better than others do.
Keywords: Adaptive Filter , GPS , Pseudo-Range , Spoofing , Step-Size
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Type of Study: Research Paper | Subject: Satellite Communications
Received: 2017/12/06 | Revised: 2018/10/19 | Accepted: 2018/02/04
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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
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© 2022 by the authors. Licensee IUST, Tehran, Iran. This is an open access journal distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license.