The present utility model relates to the field of underwater acoustics, and can be used to survey the surface of the seabed. The technical result consists in reducing mutual interference between channels the port and starboard side-scan sonar. The claimed device consists of priemoizluchayuschey antenna 1 on the port side and priemoizluchayuschey antenna 2 starboard side, the first and second switches 3 and 4, the two-channel pre-processing block 5, the generator device 6, accumulator 7, block 8, the digital signal processing unit 9 supplies, computing unit 10 . Priemoizluchayuschie antenna 1 and left 2 starboard have two-way communication with the first and second switches 3 and 4, respectively, whose outputs are connected to inputs of two channel unit 5 preprocessing inputs commutators 3 and 4 are connected to the outputs of the generating device 6, the pretreatment outputs two-channel unit 5 are connected to the inputs of the unit 8 for digital processing, the output of which is coupled to inputs of accumulator 7 and the generating device 6, digital processing portion 8 has a two-way communication with the computing unit 10, the output power supply 9 is connected to the inputs of two channel unit 5 pretreatment generator unit 6, 7 and the drive unit 8 is a digital processing. Such an arrangement side-scan sonar can be used for radiation in the channels of the left and right side quasi-orthogonal signals to improve noise immunity.
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