FIELD: acoustics.
SUBSTANCE: invention relates to hydroacoustics and is intended for determining distance to all objects simultaneously observed in noise location scanning sector by analysing colour of their routes. Hydroacoustic noise signal is received via multielement antenna, set of spatial channels is formed in scanning sector (horizontal fan of directivity characteristics), and frequency-time signal processing is performed in each spatial channel independently to make at least two frequency bands and determine signal-to-noise ratio in each of generated frequency ranges. For separation of set of observed objects by distance, maximum signal-to-noise ratio is determined in each spatial channel, and significance coefficients of frequency bands are determined as ratio between signal/noise ratio in respective frequency range and maximum value of signal-to-noise ratio. Intensity of colour component is set for each frequency range according to value of its significance factor, and colour components of frequency bands are mixed in each spatial channel. Variable gain factor of each spatial channel is determined based on analysis of maximum signal-to-noise ratio, colour of each spatial channel is formed by multiplying mixture of colour components by gain factor. Produced colour information in each spatial channel is displayed depending on time with formation of colour routes of objects in entire scanning sector. Distance to all observed objects is determined in terms of colour of their routes.
EFFECT: technical result is possibility of distance separation of all noisy objects, simultaneously observed in scanning sector at any dynamic range of noise location signals.
1 cl, 1 dwg
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