E-pulse Discrimination Technique for Radar Targets of the Same Model But Different Versions

Radar target scattering characteristic in resonance region which takes the shape and size principle information of target is one of the most efficient spectrum characteristic for radar target discrimination. The late-time responses of the targets are usually obvious in the electromagnetic resonance region against those in Rayleigh region and optical region. The E-pulse is designed from the natural modes in the electromagnetic resonance region of the target, and it will eliminate only the late-time response of these specified natural modes. In practical military scenarios, due to various tasks, targets of the same model but different versions with similar appearances but slight differences in certain parts are usually derived. For example, the model of F35 fighter jet has different versions, such as F35A, F35B, F35C. Traditional E-pulse discrimination technique extracts natural modes and constructs E-pulses for every target, which requires a huge amount of calculation and discrimination work and is too time-consuming. In this report, we propose to construct a common E-pulse for the targets belongs to the same model but different versions, provide a specific implementation process, and discuss the impact of method parameters on efficiency. Numerical results validate the effectiveness of the method, ensuring recognition accuracy while reducing discrimination time.