GNSS World of China

Volume 46 Issue 6
Dec.  2021
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REN Binbin, NI Shaojie, CHEN Feiqiang, WU Jian, GAO Lichao. Analysis of anti-spoofing performance of GNSS nulling anti-jamming antenna[J]. GNSS World of China, 2021, 46(6): 30-36. doi: 10.12265/j.gnss.2021070601
Citation: REN Binbin, NI Shaojie, CHEN Feiqiang, WU Jian, GAO Lichao. Analysis of anti-spoofing performance of GNSS nulling anti-jamming antenna[J]. GNSS World of China, 2021, 46(6): 30-36. doi: 10.12265/j.gnss.2021070601

Analysis of anti-spoofing performance of GNSS nulling anti-jamming antenna

doi: 10.12265/j.gnss.2021070601
  • Received Date: 2021-07-06
  • Accepted Date: 2021-07-06
  • Available Online: 2021-12-31
  • In order to analyze the anti-spoofing performance of the nulling anti-jamming antenna for Global Navigation Satellite Systems (GNSS) in the spoofing interference scenario, the theoretical formula for the power of authentic and spoofing signal is derived which are processed by the nulling antenna using power inversion algorithm with limited snapshots. The influence of the power of the spoofing signal arriving at the antenna array interface on the output power of the authentic and spoofing signal is analyzed in detail. And the spoofing suppression ratio is used to measure the anti-spoofing performance of the adaptive nulling antenna using power inversion algorithm. The analysis shows that even if the power of the spoofing signal is below the noise level, the adaptive nulling anti-jamming receiver using power inversion algorithm can still suppress the spoofing. And when the spoofing signal-to-noise ratio is high, the suppression effect is more obvious. Finally, the conclusion is verified by simulation and hardware platform test.

     

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