METHOD OF PROCESSING SONAR INFORMATION Russian patent published in 2014 - IPC G01S15/00 

FIELD: physics.

SUBSTANCE: method includes emitting a probing signal, receiving a reflected echo signal, forming a static fan of directional characteristic, forming a digital array of data from the output of a coherent processing channel on each spatial channel, successively outputting digital readings on a display, determining the automatic detection threshold based on the average amplitude of the digital readings of a first and a second processing cycle on all spatial channels, digital readings are output on the display according to the rule A=A_read/(G-K), where A is the amplitude of the reading output on the display, A_read is the amplitude of the initial digital reading, G is a parameter defined by an operator as gain adjustment depth, K is the number of the processing cycle; the automatic detection threshold is selected from a condition for minimal transmission of the echo signal from a target; forming a general digital array of data from the output of the coherent processing channel on all spatial channels from the moment of emission to the moment the probing signal reaches a set operating scale, determining readings exceeding the threshold, determining the number of the spatial channel M, determining the time position of the reading T, performing classification on digital readings of the detected target from the general digital array on M spatial channels, the average channel of which is equal to the measuring channel, and in a time slot equal to H cycles of the time realisation set, automatically determining classification features and automatically making a decision on the class of the target, outputting the processing result on the detected target on the display with indication of the number of the target, measured coordinates of M and T, classification features and the class of the detected target, for another detection of a threshold overshooting, the procedure is repeated until the end of the distance scale and a classification database is formed from all detected targets.

EFFECT: providing detection and classification of detected targets.

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