摘要
对用于近场声全息 (NAH)技术、测量大型声呐发射阵近场全息声压分布的线型水听器基阵 ,进行设计、研制 .全息测量阵设计和研制的关键问题是它应能得到声场中复数声压 (振幅和相位差 )的真实数据、给出场中正确的声压全息面 .本文估算了所设计结构的支撑架和水听器基座声散射对阵上水听器测量全息声压的影响 ;分析对基阵结构的加工工艺要求和提出如何实现这些要求的措施 .实验结果表明设计的这套四分之一小型水声扫描线阵的阵元测量数据可靠 ,适用于大型声呐基阵NAH技术 .并为大型全息测量线阵设计提供基础 .
The design and Development of a linear hydrophone array, using for measuring the complex sound pressure (amplitude and phase difference) distribution near by a large sonar transmitting array for NAH ( Near field Acoustic Holograph) technique, are undertaken. The most important consideration in the design and Development of the holography measuring array is that it ought to get the real data of complex pressure values in the sound field and given out the correct acoustic hologram of field. In present paper, the influences of sound scattering from the frames of measuring array structure on the acoustic pressure measurement by hydrophones are estimated. The analysis of requirements of processing technology for array structures and how to realize it are taken into consideration. It may be shown that the facility of the underwater acoustic scanning array is suitable for NAH of large sonar array.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
2002年第2期59-65,共7页
Journal of Harbin Engineering University
基金
国家"九五"计量项目资助 (0 90 10 5 13 )
