Analysis And Design Of Anti-jamming Receiver Antenna Based On The Power Inversion Algorithm For GPS

GPS will become the key strength equipment of precision command and control, precision strike and accurate delivery, which has an important impact on the effectiveness of war in various stages, during joint operations based on the advantages of information in the future. Due to the poor GPS signal power being vulnerable to interference, GPS jamming is actually a modern war offensive measure, which can reduce the use of other modern weapons performance. Therefore, the GPS in the war, not only can be a powerful weapon, but also can be a potential stricken target. So research on GPS anti-jamming technology like that on GPS jamming technology is of great significance.Using GPS receiver antenna in our paper, we systematically analyze technology of GPS jamming and anti-jamming, mainly study spatial filtering technology and use adaptive nulling antenna to implement GPS anti-jamming based on the current GPS anti-jamming technology. Meanwhile, we discuss power inversion algorithm model, infer and improve the algorithm. The improved algorithm makes the zero in antenna pattern deeper and widener. It is simulated by Matlab tool in order to conform feasibility and effectiveness of the algorithm.Ultimately, we design the anti-jamming GPS receiver antenna based on power inversion algorithm systems, structure the experimental platform, use RF signal jamming to interfere GPS receiver antenna and eventually receive effective signals form anti-jamming antenna output. It confirms this conclusion that GPS receiver anti-jamming antenna has a good anti-jamming role.Simulations and experimental results in our text show that the anti-jamming GPS receiver antenna based on the power inversion algorithm manifests the better anti-jamming effect on repressive strong interference.