Experimental studies of scalar-vector sound receiver operation in the modes of underwater noise source detection and direction finding

An experiment in shallow water area for receiving signals of a moving underwater source of noise signals by a scalar-vector receiver placed on board of a stationary bottom station is described. Signal-to-noise ratios in vector and scalar channels of the receiver at different source ranges are analyzed. Significantly different levels of anisotropic noise in the receiver channels and the possibility of achieving a 6-10 dB advantage in the signal-to-noise ratio by the vector channel over the scalar channel at minimum values of active anisotropic noise are noted. The angular arrival of noise emission energy from the source during its movement was analyzed, additional noise emitting objects in the controlled water area were detected and the possibility of differentiation between noise sources based on the composition of the emitted spectrum was shown.