Effect of Circular Assumption on Active Element Size Measurement for Hydrophone Sensitivity Calibration Using Narrow Beam
Effect of Circular Assumption on Active Element Size Measurement for Hydrophone Sensitivity Calibration Using Narrow Beam
复制标题
圆形假设对窄波束水听器灵敏度校准有源元件尺寸测量的影响
DOI：
10.1143/jjap.49.07hc01
复制
发表时间：
2010
影响因子：
1.5
通讯作者：
T. Kikuchi
中科院分区：
文献类型：
--
作者：
M. Yoshioka;Y. Matsuda;T. Kikuchi
研究了采用圆形几何形状测量的水听器有源元件尺寸对窄波束灵敏度校准的影响。通过测量水听器在有源元件上阶跃5°的旋转方向的有效半径，证实了存在一个非圆形的有效有源元件，尽管它是圆形的。通过使用聚焦波束和被测元素半径校准水听器灵敏度，圆形假设引起的灵敏度色散被认为是测量的一个重要不确定度来源。
The effect of the hydrophone active element size measured assuming circular geometry on the sensitivity calibration using a narrow beam is investigated. It is confirmed that there is a hydrophone that has a noncircular effective active element despite its circular geometry, by measuring the effective radii of a hydrophone for the direction turned with a step of 5° on the active element. As a result of calibrating the hydrophone sensitivities using a focused beam and measured element radii, the sensitivity dispersion due to the circular assumption is identified as an important uncertainty source of the measurement.