Research on Radar Cross Section Measurement Based on Near-field Imaging of Cylindrical Scanning
Xing Shu-guang①② Lü Xiao-de①② Ding Chi-biao①
①(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) ②(Science and Technology on Microwave Imaging Laboratory, Beijing 100190, China)
A new method of Radar Cross Section (RCS) measurement based on near-field imaging of cylindrical scanning surface is proposed. The method is based on the core assumption that the target consists of ideal isotropic scattered centers. Three-dimensional radar scattered images are obtained by using the proposed method, and then to obtain the RCS of the target, the scattered far field is calculated by summing the fields generated by the equivalent scattered centers. Not only three dimensional radar reflectivity images but also the RCS of targets in certain three dimensional angle areas can be obtained. Compared with circular scanning that can only obtain twodimensional radar reflectivity images and RCS results in two-dimensional angle areas, cylindrical scanning can provide more information about the scattering properties of the targets. The method has strong practicability and its validity is verified by simulations.
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2015, Vol. 4 
