摘要
为了提高对水声换能器声场分析的效率，开展了基于近场测量法的水声换能器的声场重建方法研究，首先将水声换能器的全息测量面近似为等效声源面，通过积分得到声场重建模型，然后利用自主研发的水下声场测量系统获得发射换能器全息测量面的复声压，实现对其声场的重建，最后比较不同全息测量面的重建结果和实测数据，并分析全息测量面的位置对重建结果的误差影响，得到了重建方法的有效测量区间。该声场重建方法可快速得到水声换能器的声场分布，并且准确可靠。
In order to improve the efficiency of analysing hydroaeoustic transducer sound field, the research focusing on reconstruction method of hydroacoustic transducer sound field was developed based on near-field measurement. Firstly, the holographic measuring surface of hydroacoustic transducer was seemed as source surface, which made it realizable to obtain the sound field reconstruction model by integration. Then, took advantage of self-developed underwater acoustic measurement system to obtain the complex sound pressure of emission transducer at holographic measuring surface, according to which sound field was reconstructed. And finally, as well as ascertaining a valid measurement interval for the reconstruction method by comparing the different reconstruction results of holographic measurement surface and measured data and analyzing the impact of the holographic measurement plane position on reconstruction error. The sound field reconstruction method could obtain the field distribution of hydroacoustic transducer quickly, and it is accurate and reliable.
出处
《计量学报》
CSCD
北大核心
2016年第5期520-524,共5页
Acta Metrologica Sinica
基金
国家自然科技学基金(11474259)
国防技术基础课题(JSJC2013604C012)
浙江省自然科学基金(LY15E050012)
浙江省公益技术应用研究项目(2014C31109)
浙江省“仪器科学与技术”重中之重学科开放基金(JL150506)
关键词
计量学
声场重建
近场测量
水声换能器
metrology
sound field reconstruction
near-field measurement
hydroacoustic transducer
