Calibration and Performance Evaluation of Miniature Ultrasonic Hydrophones Using Time Delay Spectrometry
Calibration and Performance Evaluation of Miniature Ultrasonic Hydrophones Using Time Delay Spectrometry
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利用时延光谱法校准微型超声波水听器并进行性能评估
DOI：
10.1109/ultsym.1981.197704
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发表时间：
1981
期刊：
影响因子：
--
通讯作者：
P. Lewin
中科院分区：
文献类型：
--
作者：
P. Lewin
介绍了一种适用于1 ~ 10 MHz频率范围内超声剂量测量水听器性能评价的新的校准方法。这种方法相对于传统的离散频率校准的主要优点在于，它能够检测由于例如寄生机械共振而引起的超声水听器的频率响应的快速且显著的变化。该方法采用时间延迟谱法（TDS）技术，不仅有利于评估水听器的自由场参数在反射环境中，但也允许的频率响应和方向性模式的超声水听器探头被确定为一个连续的函数的频率。指出了TDS技术的优点和局限性。
A novel calibration method suitable for performance evaluation of hydrophones for ultrasonic dosimetry in the frequency range between 1 and 10 MHz is described. The principal advantage of this method over conventional discrete frequency calibration is that it is able to detect rapid and significant variations in frequency response of the ultrasonic hydrophones due to e.g. spurious mechanical resonances. The method employs Time Delay Spectrometry (TDS) technique which not only facilitates assessment of the hydrophone free field parameters in reflective environments but also allows both frequency response and directivity patterns of the ultrasonic hydrophone probes to be determined as a continuous function of frequency. The advantages and limitations of the TDS technique are pointed out.