HYDROACOUSTIC SYNCHRONOUS LONG-RANGE NAVIGATION SYSTEM Russian patent published in 1997 - IPC

FIELD: long-range submarines. SUBSTANCE: device has bottom navigation network which has M submarine detectors with different response frequencies, submarine, which has synchronization unit, M-channel receiver which has acoustic input for response signals, M meters of acoustic signal spreading time which operate at channel frequency, M N units which convert time intervals into distance according to possible track number N, submarine coordinates calculation unit. In addition submarine has six element receiver with acoustic input for request frequency acoustic signal. ts elements provide three orthogonal pairs of submarine detectors which are spaced by less than wavelength distance. In addition submarine has second M-channel receiver which has three pairs of amplifiers in each channel, M units which calculate distance and gliding angle and unit which sets speed invariant and M track selection units. EFFECT: increased functional capabilities. 1 dwg