V.A. Ufaev – Dr.Sc.(Eng.), Senior Research Scientist, Leading Research Scientist, 

MESC «Zhukovsky–Gagarin Air Force Academy» (Voronezh)

E-mail: andreyuff@mail.ru

D.V. Ufaev – Ph.D.(Eng.), Senior Research Scientist, Research Institute of Railway Troops № 61

M.P. Belyaev – Ph.D.(Eng.), Deputy Head of 23d Department, MESC «Zhukovsky–Gagarin Air Force Academy» (Voronezh) E-mail: belyaev_mp@mail.ru

The paper presents the likelihood functionals of components of the bearing vector taking into account the terrain function, the maximum likelihood estimation of horizontal coordinates and the height of the radiation location based on the results of one-dimensional and two-dimensional multi-position swaddling with the help of antenna arrays of the aircraft. The formulas for calculating the potential accuracy are obtained by Kramer and linearization methods, and their adequacy is confirmed by modeling. The influence of terrain parameters on the accuracy of coordinates is estimated.

1. Pat. RF № 2432580. Method of determining coordinates of radio emission source using amplitude-phase direction finding of the aircraft / Vasenkov A.V., Guzenko O.B., Dikarev A.S., Skobelkin V.A. 2011.
2. Pat. RF № 2610150. Method of definition of coordinates of ground source of radio emissions, prirodopolzovaniya the aircraft / Berezin A.V., Bogdanov Yu.N., Vasenkov A.V., Vinogradov A.D., Dmitriev I.S., Popov S.A. 2017.
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4. Melnikov Yu.P. Aerial electronic reconnaissance (methods of efficiency assessment). M.: Radio Engineering. 2005.
5. Pat. RF № 2275746. Radar / Vishnyakov C.M., Kulikov M.V., Mitanin A.G., Smirnov P.L., Tsarik D.V., Tsarik O.V., Shepilov A.M., Shishkov A.I. 2012.
6. Rabson A.V. Maximum likelihood estimation of the coordinates is-source signals in multi-position direction finding // Radio engineering. 1987. № 9. P. 9−10.
7. Ufaev V.A., Ufaev D.V. Algorithms for high-speed calculation of coordinate azimuth systems // Antennas. 2013. № 6(193). P. 31−38.
8. Ufaev V.A. Determination of the location of ground targets based on the results of two-dimensional direction finding from flight-lifting equipment // Antennas. 2015. № 5(216). P. 58−64.
9. Ufaev A.V., Ufaev V.A. Synthesis and investigation of two-dimensional direction finding algorithms using a volumetric antenna array // Antennas. 2013. № 5(192). P. 53−58.
10. Kozmin V.A., Ufaev V.A., Ufaev A.V. Methods of amplitude two-dimensional direction finding // Antennas. 2017. № 6(238). P. 38−44.
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12. Wentzel E.S. Probability theory. M.: Vysshaya shkola. 2002.