- 期刊
- OpenAccess
GPS Jamming: Strengthening Anti Jam GPS System with Adaptive Phase Only Nulling Using Cuckoo Search
並列摘要
Global Positioning System (GPS) signals are spread spectrum, modulated with very low average power caused by background noise. Signal received is mostly 165 dB down than thermal noise level. Such signals are easily jammed either through intentional noise sources (jammer) or unintentionally from broadcasting stations harmonics or other out of band sources. This study proposes to reveal how a nulling antenna with adaptive spatial filtering technique can efficiently mitigate intentional and non-intentional interference. A beam forming antenna array is an antennas set whose outputs are weighted by complex values and combined form array output. The complex valued weights effect is to steer the array pattern's main lobes to desired directions which may be unknown and hence antenna weights are adjusted adaptively till some array performance measure is improved, revealing proper lobe or null placement. This study proposes a Cuckoo Search (CS) algorithm based new optimization method for multiple interference cancellation design that increases gain to desired signal and improves jamming rejection performance.
延伸閱讀
- Wang, C., Bo, Y., Tao, W., & Shen, T. (2017). Research on the Barometric Altimeter / Vector-Tracking Based on GPS Receiver Integrated Navigation System. Journal of Aeronautics, Astronautics and Aviation, 49(3), 203-211. https://doi.org/10.6125/16-1216-917
- Sun, D., Petovello, M. G., & Cannon, M. E. (2008). GPS/Reduced IMU with a Local Terrain Predictor in Land Vehicle Navigation. International Journal of Navigation and Observation, 2008(), 307-321. https://doi.org/10.1155/2008/813821
- Ryu, J. H., Gankhuyag, G., & Chong, K. T. (2016). Navigation System Heading and Position Accuracy Improvement through GPS and INS Data Fusion. Journal of Sensors, 2016(), 120-125-309. https://doi.org/10.1155/2016/7942963
- Ji, K., Zhou, H., & Fan, Y. (2019). GPS Vector Tracking Loop Enhancement Using a Robust Cubature Kalman Filter. Journal of Aeronautics, Astronautics and Aviation, 51(4), 345-353. https://doi.org/10.6125/JoAAA.201912_51(4).01
- 林君明、林鴻志（1996）。GPS Navigation Data Signal Processing。中國航空太空學會學刊，28(2)，153-161。https://doi.org/10.6124/TAASRC.199606_28(2).09