METHOD OF LOCATING OBJECTS IN PASSIVE MONITORING SYSTEM Russian patent published in 2014 - IPC G01S15/04 

FIELD: radio engineering, communication.

SUBSTANCE: method of locating objects in a passive monitoring system comprises receiving signals from equipment located at spaced-apart positions; spatial selection based on the received signals at each receiving position; non-coherent accumulation of each spatial selection result over time; making a decision on detection of target signals based on the accumulation results and forming, based on the detection results, direction-finding lines in at least two positions; determining the distance between each of the at least receiving positions of the system and points of intersection of the direction-finding lines formed in said positions; measuring the strength of the signals received at said positions based on those non-coherent accumulation results on which target signals were detected; translating each of said signal strengths to points of intersection of direction-finding lines corresponding to said target signals; generating difference functions of the results of translating signal strengths from each of said receiving positions to the same point of intersection of said lines for said points and determining coordinates of the targets as coordinates of those points of intersection of direction-finding lines for which the difference functions of the results of translating signal strengths are greater than a threshold.

EFFECT: enabling location when more than one noise object is located in the coverage area of a system.

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