Interference Suppression in a GPS Receiver with 4 Element Array Design and Implementation of Beamforming Algorithms

Date

2016-04-14

Author

Dabak, Omer Can
Erdem, Fatih
Sonmez, Tolga
Alatan, Lale
Koç, Seyit Sencer

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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Global Positioning System (GPS) jammers add excessive noise to the received low power GPS signals and have capability to either weaken or completely destroy the positioning performance of GPS receivers for both civilian and military users. Researchers are actively working to develop GPS receiver systems resistant to interference sources. Our aim is to develop a system based on spatial filtering of jamming signals through the use of an active antenna array which is capable to control its radiation pattern by utilizing signal processing techniques. Array radiation pattern is controlled to maximize gain in satellite directions and to create null regions toward jammers. Adaptive beamforming methods provide necessary weighting coefficients to form desired radiation patterns using received data. In this paper, design, production and tests of an active antenna array is presented with implementation of adaptive beamforming algorithms using commercially available development boards.

Subject Keywords

GPS, Patch antenna, CRPA, Antijamming, Beamforming, Nullsteering

URI

https://hdl.handle.net/11511/52951

Conference Name

IEEE/ION Position, Location and Navigation Symposium (PLANS)

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

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Interference Supression in GPS Receivers using Spatial Filtering Erdem, Fatih; Dabak, Omer Can; Sonmez, Tolga; Alatan, Lale; Koç, Seyit Sencer (2016-05-19) GPS receiver operation can be interrupted by intentional/unintentional jammers even with low power levels. As the jammers become more abundant, protection of critical systems gains importance. In this work, it is aimed to suppress the GPS L1 band jammers using spatial filtering with antenna arrays. After experimental studies, it is achieved to suppress the jammers and to recover the GPS operation in real environment.
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Citation Formats

O. C. Dabak, F. Erdem, T. Sonmez, L. Alatan, and S. S. Koç, “Interference Suppression in a GPS Receiver with 4 Element Array Design and Implementation of Beamforming Algorithms,” presented at the IEEE/ION Position, Location and Navigation Symposium (PLANS), Savannah, GA, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/52951.