METHOD FOR GATE IDENTIFICATION OF SIGNALS WITH RADIO-FREQUENCY SOURCES IN MULTI-TARGET ENVIRONMENT Russian patent published in 2015 - IPC G01S5/06 

FIELD: radio engineering, communication.

SUBSTANCE: electronic surveillance system calculates estimates $${\widehat{X}}_{j,i}\left(k\right)$$ of status coordinates of detected and tracked radio-frequency sources, based on which results of measuring coordinates X_in,i(k), obtained at the k-th moment in time, are identified with the corresponding radio-frequency sources, wherein for each status coordinate of each detected and tracked radio-frequency source, the method includes determining an interval of values which depends on variance of measurement of X_in,i(k), the variance of the rate of measuring status coordinates $${\dot{X}}_{j,i}\left(k\right),$$ as well as the coefficient of proportionality K, the value of which is selected in the range of 1 to 2. The set of intervals on all status coordinates of each radio-frequency source forms a multidimensional gate, where if the measurement result of the status vector X_in(k) at the k-th moment in time falls in said gate, the result is identified with, for example, a specific radio-frequency source. If the measured vector X_in(k) does not fall within any of the gates of the j-th radio-frequency source, where $$j=\overline{\mathrm{1,}N},$$ a new radio-frequency source with an index N+1 is detected.

EFFECT: high reliability of identifying signals in a multi-target environment.

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