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An algorithm is considered for calculating the EM field of dipole in case of arbitrary spacing between the point of dipole location and the point of its field observation, as well as arbitrary distance of points from the boundary of dielectric half-spaces. The algorithm is adapted to the height of mentioned points above the boundary and allows to reduce significantly calculation time while providing given accuracy of the dipole EM field component calculation. Results of calculation of radar scattering characteristics are demonstrated for low-altitude and ground objects obtained using the developed calculation technique based on integral equation solution, and using proposed algorithm for dipole EM field calculation.

dipole; ground target; integral equation; low-altitude target; scattering characteristics