Title :
Computation of RCS of targets modelled with trimmed NURBS surfaces
Author :
Guan, Y. ; Gong, Shuxi ; Xu, Yan ; Zha, F. ; Jiang, Wei
Author_Institution :
Nat. Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´an, China
Abstract :
A novel technique for the monostatic radar cross-section (RCS) computation of complex targets modelled with trimmed nonuniform rational B-spline (NURBS) surfaces is proposed using physical optics (PO). The stationary phase method (SPM) is demonstrated to be invalid in evaluation of the PO integral over trimmed surfaces. Thus a new method, which combines SPM with the Gordon method (namely SPM-Gordon) is presented as a substitute and good candidate. Examples show that excellent accuracy is obtained.
Keywords :
physical optics; radar cross-sections; splines (mathematics); RCS computation; SPM-Gordon method; monostatic radar cross-section; physical optics; stationary phase method; target modelling; trimmed nonuniform rational B-spline;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.1449
