Research on Anti-jamming Simulation based on Circular Array Antenna

In the complex environment of space electromagnetic countermeasures, the received navigation signals are easily interfered. Because the navigation satellites are far away from the ground, their strength is relatively weak when they reach the ground, and they can easily fail to work due to interference. In view of the above situation, this paper has carried out relevant anti-jamming research and simulation. This paper designs a 4-element uniform circular array antenna, and conducts research on the performance of anti-jamming based on the power inversion algorithm. This paper analyzes the null depth under different interference-to-noise ratio conditions and the interference suppression effect of interference signals from different directions. The experimental results show that the method proposed in this paper can produce deeper nulls and effectively suppress different interferences. Noise ratio interference, and can accurately locate and suppress the interference from different directions, and the antiinterference effect is better.