Design optimisation of ultrasonic hydrophones with inconsistent crossover calibrations

精密声学公司是水听器、换能器、声学材料和超声波频率扫描系统的全球领先供应商。水听器是为水下使用而设计的压力测量设备。水听器可以检测到压力的变化，例如由声音或超声波引起的变化，因此水听器用于精确测量超声场。精密声学公司生产各种设计的水听器，可用于各种应用的测量。该项目着眼于协调和理解100-400 kHz交叉频率范围内针状水听器校准方案之间的差异的创新方法，这在治疗医学或声纳/水下领域都有应用。将对水听器内部结构的修改进行建模和测量。由于水下声学(KHz)和医学超声(MHz)领域中常规使用的校准制度本身的限制，将通过应用使用参数阵列产生的声场来综合解决。

Precision Acoustics is a leading global supplier of hydrophones, transducers, acoustic materials and scanning systems for ultrasonic frequencies.Hydrophones are pressure measurement devices designed for underwater use. Variations in pressure, such as those induced by sound - or ultrasound - can be detected by the hydrophone, thus hydrophones are used for precise measurement of ultrasound fields. Precision Acoustics manufactures a variety of designs of hydrophone which lend themselves to measurement of all sorts of applications.This project looks at innovative ways of reconciling and understanding differences between hydrophone calibration regimes for the needle hydrophones in the crossover frequency region of 100--400 kHz, which has applications both in, for example, therapeutic medical or sonar/underwater areas. Modifications to the internal structure of the hydrophone will be modelled and measured. The restrictions due to the calibration regimes themselves routinely used in the underwater acoustics (kHz) and medical ultrasound (MHz) areas will be combinedly addressed by the application of acoustic fields generated using parametric arrays.