Acoustic correction of ultra-short baseline positioning based on stereoscopic five-element array
2022 IEEE 6th Advanced Information Technology, Electronic and Automation Control Conference (IAEAC )(2022)
Abstract
For ultra-short baseline positioning system, the acoustic curve caused by the inhomogeneity of seawater medium affects the positioning accuracy of the system, so it is necessary to correct the acoustic curve. In this paper, a stereoscopic five-element array is established by optimizing the formation to improve the system orientation accuracy, and then a method for correcting the horizontal distance and direction angle is proposed according to the theory of ray acoustics. Through theoretical analysis and simulation experiments, the results show that the method can effectively reduce the positioning error and greatly improve the positioning accuracy of ultra-short baseline positioning system.
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Key words
Ultra-short baseline,sound ray correction,stereoscopic five-element array,positioning accuracy,underwater acoustic positioning
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