Scholarlink

<p>Hydrophone phase calibration is labor-intensive and is much less procedurally developed than conventional amplitude calibration, which is why its results depend on the skill of the experimenter. A&#xa0;computational method for determining the phase response of the hydrophone is proposed, which provides a&#xa0;means to reduce the labor intensity of periodic calibrations. Proceeding from the experimentally verified applicability of the “minimum-phase system” concept to the hydrophone, the author represents the calibrated hydrophone by a&#xa0;model in the form of a&#xa0;leading element and a&#xa0;minimum-phase quadrupole. The results of primary calibration are used to determine the equivalent radius of the hydrophone. During periodic calibrations, phase measurements are omitted, and the frequency response of sensitivity is determined, which is used to calculate the minimum phase response of the hydrophone using the Hilbert transform. The phase response of hydrophone sensitivity is obtained as the sum of the minimum phase response and the frequency dependence of the phase incursion of the sound wave propagating in water over a&#xa0;distance equal to the equivalent radius of the hydrophone. An experiment to determine the equivalent radius of the hydrophone during primary calibration is described. The use of the computational method reduces the labor intensity of periodic verification by many times, as well as the strain on the primary standard, while preserving its service life since its use during periodic calibrations is no longer necessary.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Determination of the hydrophone phase response during periodic calibrations

  • 期刊论文

  • 发表日期：

    2025年9月1日

查看全文
  • Alexander E. Isaev

摘要

Hydrophone phase calibration is labor-intensive and is much less procedurally developed than conventional amplitude calibration, which is why its results depend on the skill of the experimenter. A computational method for determining the phase response of the hydrophone is proposed, which provides a means to reduce the labor intensity of periodic calibrations. Proceeding from the experimentally verified applicability of the “minimum-phase system” concept to the hydrophone, the author represents the calibrated hydrophone by a model in the form of a leading element and a minimum-phase quadrupole. The results of primary calibration are used to determine the equivalent radius of the hydrophone. During periodic calibrations, phase measurements are omitted, and the frequency response of sensitivity is determined, which is used to calculate the minimum phase response of the hydrophone using the Hilbert transform. The phase response of hydrophone sensitivity is obtained as the sum of the minimum phase response and the frequency dependence of the phase incursion of the sound wave propagating in water over a distance equal to the equivalent radius of the hydrophone. An experiment to determine the equivalent radius of the hydrophone during primary calibration is described. The use of the computational method reduces the labor intensity of periodic verification by many times, as well as the strain on the primary standard, while preserving its service life since its use during periodic calibrations is no longer necessary.