Self-noise measurement of vector sensor by using dual-channel transfer function method

The vector hydrophone is seriously disturbed by the environment interferences when measuring its self-noise, so the dual-channel transfer function method (DTFM) is proposed for solving this problem. First, the principle of DTFM to reduce the environmental interference is analyzed. Then the factors affecting the measurement, such as the background noise condition and the spacing of the dual hydrophone, are researched by means of the experimental method. The results indicate that the self-noise of the vector hydrophone can be satisfactorily measured by using DTFM:not only the environmental interference can be reduced effectively, but more accurate results can be obtained as well. DTFM provides an effective approach to accurately measuring the self-noise of vector hydrophone, which supplies a measurement basis for the practical engineering application of vector hydrophone in the field of remote detection.