Calibration of Vector Hydrophones in Deep Water

Abstract:

To apply vector hydrophone to deep-sea detection, a calibration test of the vector hydrophone under different hydrostatic pressure was taken in the national defence underwater acoustics calibration laboratory. The effect of the relative sensitivity changes between channels on the vector hydrophones direction finding and zero-inhibition performance is explored, and the principle model for the influence of the directivity deviation on vector direction measuring is established. Meantime, the phase compensation between channels is found to be frequency-independent. The omnidirectional method is proposed to compensate the directional rotation. As a result, the influences of the hydrostatic pressure on direction finding are effectively reduced.

• Periodical: Applied Mechanics and Materials (Volumes 336-338)
• Pages: 303-308
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.336-338.303
• Online since: July 2013
• Authors: An Bang Zhao, Bin Zhou, Jiang Qiao Li
• Keywords: Calibration, Directivity, Sensitivity, Vector Hydrophone

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