CALCULATION OF OBJECT RADAR CHARACTERISTICS TAKING INTO ACCOUNT THE INFLUENCE OF SURFACE-WAVES AND SLOTS

Radar characteristics of objects in the HF-scattering region are calcu lated after facet representation of their surfaces by summing up refle ctions from the main elements of the object-plates, edges, and slots-a nd taking into account surface waves produced by these elements. Echo- area patterns calculated by the proposed method are compared with the experimental results obtained for rectangular and triangular plates, s lotted objects, and a cone-sphere. The method enables one to obtain ra dar characteristics of an object, taking into consideration polarizati on of the sounding signal and radiophysical properties of the material s and coatings. As an example, numerical results for the cone-sphere a re presented for the case of parallel and orthogonal reception at line ar and circular polarization of the electric field and for a dihedral corner reflector with coating.