Radar cross-section (RCS) analysis of high frequency surface wave radar targets

摘要

Realistic high frequency surface wave radar (HFSWR) targetsare investigated numerically in terms of electromagnetic wave --target interactions. Radar cross sections (RCS) of these targets aresimulated via both the finite-difference time-domain (FDTD) method andthe Method of Moments (MoM). The virtual RCS prediction tool that wasintroduced in previous work is used for these investigations. Thevirtual tool automatically creates the discrete FDTD model of thetarget under investigation and performs the FDTD RCS analysis. Italso automatically constructs a MoM wire grid model of the target;therefore, it is also possible to compare FDTD results against theMoM-based NEC (Numerical Electromagnetic Code) data. Bi-static RCSpatterns under a variety of illuminations over the whole HF band (3-30MHz) are presented. The mono-static RCS vs. frequency of thesetargets is also given.