摘要
文章针对现有声纳技术探测水中小目标的实际困难,从激光致声辐射声场的线性模型出发,应用声纳基阵的波束形成原理,建立了等离子体圆盘模型,对激光致声水中辐射声场的方向性进行了理论研究,得到此声场的方向性图,进而分析和比较了功率不同的激光束所激发的辐射声场的方向性,并得出一定的规律。
The directivity of the laser-induced sound field in water are investigated theoretically according to a new model of plasma disc. The law of directivity of the radiating field is shown by means of the simulation caculation. Some connection between the range of power of the laser bean and the directivity of the laser-induced sound field is concluded.
出处
《激光与红外》
CAS
CSCD
北大核心
2007年第1期26-28,31,共4页
Laser & Infrared
关键词
激光致声
辐射声场
等离子体圆盘
方向性
laser-induced sound
sound radiating field
plasma disc
directivity
