【摘要】 近场校准方法可用于在近场条件下校准水声换能器。方法以亥姆霍兹(Helmholtz)积分为基础,由近场测量数据推算大尺寸水声换能器的远场特性。本文叙述了三种不同类型换能器近场数据测量技术和远场特性计算方法,并作为例子给出了近远场校准结果。更多还原

【Abstract】 The near-field calibration method can be used to calibrate underwater sound transducer (array) in near-field range. In accordance with the method based on Helmholtz integration, the far-field characteristics of underwater sound transducers with large dimension can be calculated from near-field data measured. The paper describes the measurement techniques of near-field data and the calculation method of far-field characteristics for three kinds of shape tranducers, and also show the results of near and far ield calibration as example.更多还原