METHOD OF DETECTING, DETERMINING COORDINATES AND TRACKING AERIAL OBJECTS Russian patent published in 2015 - IPC G01S3/80 

FIELD: radio engineering, communication.

SUBSTANCE: method includes exposing a sensor to an acoustic field generated by a moving aerial object, said sensor being in the form of an extended optical cable. The method includes calculating the initial and final time when the signal exceeds the threshold t_n and t_k, a time t_m which corresponds to the minimum signal strength and a time t_d when the frequency of one of the characteristic components of the signal spectrum assumes a nominal value. Based on said data and the measured Doppler frequency, coordinates of aerial objects are determined, which are transmitted from all sensors to a selected computer, where they are combined and identified, and a trajectory is constructed based thereon. With a known direction of flight, the threshold value is reduced in the next sensor in the direction of movement of the aerial object.

EFFECT: simple process of detecting, determining coordinates, constructing a trajectory and identifying the type of low-altitude aerial objects.

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