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, 

3 CRI of DoD RF (Moscow)

M.F. Volobuev – Ph.D.(Eng.), Dr.Sc.Candidate, Associate Professor, 

MESC «Zhukovsky–Gagarin Air Force Academy» (Voronezh) E-mail: volmf81@mail.ru

Investigated method of homing in azimuth in the horizontal plane and on the altitude in vertical plane. Investigated method of homing on a source of radiation according to the results of a two-dimensional direction finding. The formulas for calculating the parameters investigated glide paths. The formulas for estimates of the current direction. To determine the coordinates used criteria are maximum credibility and minimum distance to the lines of bearing. The simulation investigated the dependence of the probability of guidance from the range to the source rate, the errors of direction finding and the speed of maneuver of the aircraft.

Annotation

To ensure automatic landing, the methods of homing an unmanned aerial vehicle on a target-a radiation source located in the center of the trapping network are considered. The first method, according to the results of two-dimensional bearing of the radiation source with a dive on it. The second method, guidance in the horizontal plane by the results of one-dimensional bearing in this plane, and in the vertical plane homing altitude with a smooth decrease in the level of the target and horizontal flight to meet her. Under the condition of flight with a constant speed, restrictions on the angle of inclination of the trajectory and the speed of its change, based on geometric constructions, formulas for calculating the parameters of the corresponding glide path are obtained. The formulas for estimates of two-dimensional and one-dimensional bearing direction finding results of the current using the volume of an antenna array of estimated coordinates according to the criteria of maximum likelihood and minimum distance to the lines of bearing, based on the results of previous cycles of direction finding. Examples of the field of dispersion of coordinate serifs are given when evaluating them according to the specified criteria. Using simulation statistical modeling, the dependences of bearing errors in azimuth and elevation, based on the current estimates of the coordinates of the flight time when moving on both types of glides. The dependences of the probability of guidance in the trapping network from the range to it with the restriction and in the absence of restrictions on the angle of the trajectory, the bearing period, the maneuver speed of the aircraft, the mean square error of bearing for each of the methods of homing and methods of bearing are obtained. A comparative analysis of the effectiveness of homing methods in various combinations with the methods of bearing is carried out, the regularities affecting the efficiency of homing are determined.

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