METHOD TO RECEIVE INFORMATION ON SOUND-PRODUCING OBJECTS IN SEA Russian patent published in 2009 - IPC G01S3/80 

FIELD: physics.

SUBSTANCE: noise signals are received in horizontal and vertical plane, frequency-time processing is carried out in every spatial channel of observation, output voltages of formed space channels are squared and summed in all frequency samples, then averaged in time, signals are centered and normalized to noise, signal energy and information parameters are accompanied, route detection is carried out by comparison of generalised weight of signal local maximums with threshold of signal detection, which corresponds to threshold ratio of signal-noise. Method is based on the fact that in every cycle of viewing noise signals are received, primarily processed, squared, secondarily processed and route-detected in at least another two frequency ranges and additionally, at least, for two angles of observation in vertical plane, creating new expanded set of space channels.

EFFECT: multiple searching of vertical plane angles and different frequency ranges makes it possible to separate noise objects, which have common parameters under searching conditions, and not to miss true objectives and to isolate them from parameters that are false in all space.

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