Study on Cylinder´s Surface Current Density and Radar Cross Section (RCS) Resonance

Perfect electric conductive cylinder´s scattering is a typical 2-dimensional scattering and has accurate solution which is very helpful in study of conductor´s surface wave, crawling wave and is often used for validation of computational algorithm. The surface currency density´s magnitude and phase´s distribution over the profile are studied and the incident polarization and frequency´s influence on the surface currency are analyzed. The bi-static radar cross section (RCS) is calculated based on the far field approximation of Hankel´s function and the RCS´s resonant characteristics over the frequency and bi-static angle are studied. Analysis results show that RCS´s variations with frequency and bi-static angle are similar and the resonant peaks numbers are the same. This result has important reference meaning to study of RCS´s frequency and multi-static features.