Phase calibration of hydrophones
Phase calibration of hydrophones
复制标题
水听器相位校准
DOI：
10.1121/1.386715
复制
发表时间：
1980
影响因子：
2.4
通讯作者：
A. L. Buren
中科院分区：
文献类型：
--
作者：
L. Luker;A. L. Buren
确定接收信号中的相位信息需要了解测量水听器的接收灵敏度的相位角。除了远低于最低水听器谐振的频率外，该相位角随频率变化很大。本文描述了传统互易校准的扩展以包括相位。它还描述了一种独特的测量程序，可以消除由于元件位置和声速的不确定性而导致的相位误差。使用新程序校准了多个水听器。测量结果与基于衍射常数计算的理论结果非常吻合。
Determination of the phase information in a received signal requires knowledge of the phase angle of the receiving sensitivity of the measuring hydrophone. Except for frequencies well below the lowest hydrophone resonance, this phase angle varies considerably with frequency. This paper describes the extension of conventional reciprocity calibration to include phase. It also describes a unique measurement procedure that eliminates phase errors resulting from uncertainties in element location and sound speed. Several hydrophones are calibrated using the new procedure. Measured results are in good agreement with theoretical results based on diffraction constant calculations.