| Issue |
E3S Web Conf.
Volume 94, 2019
International Symposium on Global Navigation Satellite System 2018 (ISGNSS 2018)
|
|
|---|---|---|
| Article Number | 03004 | |
| Number of page(s) | 6 | |
| Section | GNSS Today and Future | |
| DOI | https://doi.org/10.1051/e3sconf/20199403004 | |
| Published online | 08 May 2019 | |
A Design of Anti-jamming Method Based on Spectrum Sensing and GNSS Software Defined Radio
1
Chungbuk National University, Dept. of Electronics Eng., 28644 Cheongju, Republic of Korea
2
Agency for Defense Development, 34186 Deajeon, Republic of Korea
* Corresponding author: chansp@cbnu.ac.kr
This paper presents result of new approach for anti-jamming using a method based on cognitive radio. To detect and get center frequency and bandwidth of jamming, a spectrum sensing based on multi-channel energy detector is implemented on the SDR. The SDR and a universal software radio peripheral is used to support real-time channel reconfiguration. And detected center frequency and bandwidth is used to select LO frequency to avoid jamming and receive GNSS signal. Then the receiver is reconfigured by the selected LO frequency. To verify the feasibility of the proposed anti-jamming process, position, carrier to noise ratio of each channel are measured using a test scenario that is consist of GPS and Beidou with a CW jamming. As a results, by switching of LO frequency, GNSS signal that is not affected by jamming can be received with the same performance as non-jamming.
© The Authors, published by EDP Sciences, 2019
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