DIFFERENCE-RANGING METHOD OF DETERMINING COORDINATES OF A RADIO-FREQUENCY SOURCE Russian patent published in 2020 - IPC G01S3/46 G01S3/72 G01S5/06 

FIELD: radio equipment.

SUBSTANCE: invention relates to radio engineering and can be used in multi-position radio systems for determining coordinates of a given source of radio emission source (RES) with code and time division of channels. Technical result in range-difference (RD) method is achieved due to determining at preparatory stage centers of elementary volumes of controlled area (X_i, Y_j, Z_k), on which is formed a matrix of coordinates for each item (X_i, Y_j, Z_k) of N measurement bases "peripheral receiving station (PRS), – a central point for receiving and processing (CPRP)" is defined reference values of the signal difference reception time τ_i,j,k,n, forming N reference matrices, elements of each of which is corresponding to coordinates (X_i, Y_j, Z_k) reference value τ_i,j,k,n, and in the process of operation based on the considered set of operations for memorizing and analyzing the received signals, only the given RES radiation is selected, calculating N cross-correlation functions (CCF) for corresponding measurement bases, forming N correlation matrices by replacing elements τ_i,j,k,n of reference matrices with corresponding measured CCF values, summing the obtained correlation matrices, and for most probable location of preset RES, coordinates of point (X_i, Y_j, Z_k) corresponding to maximum value of element of total correlation matrix are received.

EFFECT: technical result is the development of difference-range-finding (RD) method of determining the location of a given RES in space with time or code division of channels, providing high accuracy of their location.

3 cl, 18 dwg, 2 tbl