DIFFERENCE-RANGE METHOD FOR DETERMINING THE LOCATION OF OBJECTS Russian patent published in 2023 - IPC G01S3/46 

FIELD: radio engineering.

SUBSTANCE: invention relates to radio engineering and can be used in multi-position systems for determining the location of objects using radio emission sources (RES) with code and time division channels. In the claimed method, at the preparatory stage, a video camera (VK) is installed, the location of which ensures the receipt of video information from all places of the controlled area (CA), its coordinates (x, y, z)_VC are determined, the maximum viewing angles of the VC vertically and horizontally the focal length ƒ, z coefficient, frame resolution of the video stream (W, H)_fr, sizes of the VC sensor (W, H)_sen and controlled object (W, H)_ob are set, the initial orientation of the VC is determined: A_VC azimuth and E_VC elevation angle, and in the process the distance ℓ between VC and RES, the optimal level of magnification z_op are calculated, the width FOV_θ and the height FOV_h of the area of space falling into the frame, the azimuth of the A_RES and the elevation angle of the A_RES of the RES relative to the position of the VC, the difference in azimuth ΔA and the elevation angle ΔЕ between the point of guidance of the VC and the position of the RES are determined, the horizontal distance ΔW and vertical ΔH between the position of the RES and the guidance point of the VC is determined, the width W_pr and the height H_pr of the projection of the object with RES on the video frame is detrmined, the offset of the projection of the object with RES ΔW_pr and ΔH_pr is calculated, the location of the object with RES (xpr, control) on the video frame is determined, based on the parameters ΔA, ΔЕ and z_op the video camera is set up, and using the video image of the object with RES based on (W_pr, N_pr) and (x_pr, y_pr), its location is identified and specified with reference to the CO fragment.

EFFECT: development of a difference-ranging (DR) method for determining the location of a given object due to its visual selection from a set of objects with reference to a fragment of a controlled area.

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