METHOD OF RADIO-FREQUENCY SOURCE POSITION DETERMINATION USING AIRCRAFT Russian patent published in 2018 - IPC G01S5/00 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to the methods of determining the location of the radio-frequency source (RFS), and can be used in navigation, direction-finding, location means for locating RFS from an aircraft, in particular an unmanned aircraft. The points of the arrangement of the aircraft in three-dimensional space at different instants of time act as focuses of the circles of Apollonius. The method is based on the reception of radio signals of the RFS in a given frequency band ΔF by a moving meter placed on the aircraft, measurement and memorizing primary coordinate-informative parameters used as electric field strengths amplitudes (AFSA), with simultaneous measurement and storage of secondary parameters (SP) - the space coordinates of the aircraft. The aggregates of the AFSA and the SP are measured and stored N≥5 times in the process of moving the aircraft along an arbitrary trajectory, N-1 coefficients of Apollonius circles are calculated, N-1 spherical surface (SS) of the RFS is formed, and coordinates of the RFS in space are the coordinates of the intersection point of the N-1 of the indicated SS of the RFS.

EFFECT: improvement of positioning accuracy source in space through the use of spherical surfaces of the position of the source of radio emissions generated by rotating the circles of Apollonius around axes connecting relevant magic tricks.

2 cl, 3 dwg