A Novel Wavelet Packet-based Jamming Mitigation Technique for Vector Tracking-based GPS Software Receiver

Haidy Y. Elghamrawy, Mohamed Youssef and Aboelmagd M. Noureldin

Abstract:	The mitigation of radio frequency interference (RFI) has been always one of the major concerns for the global navigation satellite system (GNSS) community. Despite the narrowband jamming immunity gained by spreading and despreading processes in direct sequence spread spectrum employed in global positioning system (GPS). The fact that GPS signals travel a very long distance and reach the receiver with a very low power makes it vulnerable to intentional and non-intentional interference. The presence of a jamming signal affects the acquisition, tracking and navigation modules inside the receiver leading to loss-of-lock of the signals. Consequently, GPS receivers fail to provide reliable position, velocity, and timing solutions. The paper focuses on an innovative narrowband jamming mitigation technique based on the wavelet packet transform (WPT). The proposed technique is implemented in a vector tracking-based software GNSS receiver, and test trajectories are generated using Spirent GSS6700 GNSS Simulation System. Simulation results showing the benefits of the proposed wavelet-based mitigation technique on the acquisition and navigation stages are presented.
Published in:	Proceedings of the 31st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2018) September 24 - 28, 2018 Hyatt Regency Miami Miami, Florida
Pages:	3623 - 3631
Cite this article:	Elghamrawy, Haidy Y., Youssef, Mohamed, Noureldin, Aboelmagd M., "A Novel Wavelet Packet-based Jamming Mitigation Technique for Vector Tracking-based GPS Software Receiver," Proceedings of the 31st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2018), Miami, Florida, September 2018, pp. 3623-3631. https://doi.org/10.33012/2018.15915
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