Simulation of radar cross sections for metallic objects used to evaluate the performance of a runway foreign object debris detection system

A runway foreign object debris detection system using millimeter waves in the 90 GHz band is being considered. The radar cross section of M-10 Bolt & Nut, which is important for performance evaluation, was performed by electromagnetic field analysis. The degree of influence of the microstructure of the model was investigated. The polarization dependence of horizontal and vertical polarization was also studied. In order to investigate the size dependence of RCS, EM Simulation were performed for a simple shaped cylinder. The relationship between polarization dependence of RCS and cylinder size is discussed by analyzing a simple cylinder.