RCS Calculation from Near- Field ISAR Imaging Techniques in Terahertz Band

摘要

Inverse synthetic aperture radar imaging is a useful tool that characterizes the scattering characteristics of radar targets. In particular, the near-field images can be used to extract the far-field radar cross section of the target overcoming the need for long-range measurement setups. This paper eliminates the error effects in near-field images using technology of the spherical wave-front correction and extracts the radar cross section of the target from the processed images in Terahertz band. Experimental results show that the target RCS obtained by this method has higher accuracy.