Research on the method of active cancellation stealth with broadband and wide-angle

In this paper, a method for broadband and wideangle active cancellation stealth is proposed to address the issue of radar angle measurement errors. The method involves utilizing a phase shifter and an amplifier connected to the antenna in order to control the re-radiation field of the antenna and cancel out the scattering field of the target. Particle swarm optimization (PSO) is employed to calculate the values of phase shifters and amplifiers. The effectiveness of this method in achieving broadband and wide-angle active cancellation is confirmed through two monostatic simulation cases. Specifically, when using a flat plate as a case, it is demonstrated that the reduction in radar cross section (RCS) exceeds 10dB with a frequency width greater than 35MHz and an angle width greater than 15°. In the case of a missile, similar results are achieved with RCS reducing by 10dB when the frequency width exceeds 32MHz and the angle width exceeds 5°.