No abstract

Abstract. The detection and identification of buried inhomogeneities using electromagnetic waves are of great importance for nondestructive testing in geophysical, civi'l engineering, military, or humanitarian applications. The approach described here uses a linear inversion algorithm based on diffraction tomography to process the backscattered field signal generated by the buried inhomogeneities, measured over a probing area, for computation of a tomographic image of the ground. The technique has been extended to cater for time pulse (synthetic pulse or real pulse) illumination and to incorporate the near-field

No abstract

It is shown that to obtain the complete radiation pattern of a transmission line antenna it is necessary to include the effects of radiation from the open end of the line. A theoretical expression for this additional term is presented and the result confirmed experimentally.