A.D. Vinogradov – Honored Inventor of RF, Dr. Sc. (Eng.), Professor, Main Research Scientist, MESC «Zhukovsky–Gagarin Air Force Academy» (Voronezh)
E-mail: mvvad@mail.ru
V.V. Gribanov – Ph. D. (Phys.-Math.), Research Scientist, MESC «Zhukovsky–Gagarin Air Force Academy» (Voronezh) E-mail: vgribanov@yandex.ru
A.Yu. Mikhin – Head of Sector, JSC «Concern «Sozvezdie» (Voronez)
E-mail: alemih@mail.ru
E.P. Nikitenko – Designer, JSC «Concern «Sozvezdie» (Voronez); Post-graduate Student, Voronezh State University E-mail: nikitenko.ekaterina@gmail.com
G.V. Podshivalova – Ph. D. (Eng.), Head of Department, JSC «Concern «Sozvezdie» (Voronez) E-mail: Galinawrn@mail.ru
The article analyzes the method of formation of the direction-finding characteristics in the elevation plane using an equidistant threeelement antenna array consisting of vertical vibrators, placed above the actual earth's surface. The results of calculation of methodical and random errors of radio direction finding in elevation plane, caused by the electrodynamic interaction of antenna elements, the frequency dependence of the antenna radiation patterns, the influence of the internal noise of the DF meter and the influence of the underlying surface are given. It is shown that in the conditions of a priori uncertainty of electrical parameters of the Earth’s surface in the reflection region, parameters of the underlying surface and the influence of the internal noise of radio DF meter to improve the accuracy of radio direction finding in the elevation plane it's appropriate to use the values of the electromagnetic field of the direction-finding source of the radio signal measured at three reception points spaced by a previously known equal value. The article contains 4 figures and 4 references to sources of information.
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