Mie Scattering Properties of Simple RCS Objects and Applications

The requirement for advanced target recognition has facilitated the evolution of radar systems, enabling classification, recognition and identification of various types of objects. Numerous studies have focused on the accurate prediction of radar cross-section (RCS) for target identification. While the magnitude of the Mie scattering has been widely employed to enhance the likelihood for target detection, the proposed method based on the frequency spectrum of Mie scattering was presented for estimation of the size of the target. An accurate size of targets was quickly estimated using the frequency of the peak Mie scattering. The frequencies of Mie scattering are investigated using different radiuses of spheres and cylinders which directly indicate the size of objects. The peak magnitudes were acquired at 105∼485 MHz and 83∼398 MHz for spheres and cylinders, respectively, as the radiuses change from 0.1 m to 0.5 m. In addition, two aircraft-shaped models consisting of an ellipsoidal body, two wings and a stabilizer are used to obtain RCS scattering with various azimuth and elevation angles. Indoor RCS measurements with a metal sphere are presented in order to validate its effectiveness.