Abstract
To improve the radar scattering characteristics of the target in the head direction, a narrow surface element (NSE) method based on physical optics (PO) and physical theory of diffraction (PTD) is presented. When solving the radar cross section (RCS) of the surface to be optimized, the surface needs to be decomposed into a number of narrow surfaces, each of which has a single column of interlaced triangular face element. Within a given range of variation, the mesh information of the surface could be determined by the NSE method to obtain the required RCS distribution. Taking an asymmetric surface as an example, the NSE method is used to determine the minimum RCS of the surface, thereby improving the head-to-stealth performance of the target. The proposed NSE method is effective and efficient for the fast optimization of the surface RCS.
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