摘要
定义了描述目标近场回声特性的物理量——回声强度 (Echo Strength,ES) .提出计算 ES的近场板块元方法 ,得出水下简单形状目标 :球体、椭圆柱和旋转椭球体回声的近、远场过渡规律 .
This paper studied the transitional characteristics of underwater simple shape targets from near field to far field. In order to describe the near-field echo characteristics of targets, a new parameter - echo strength (ES) is defined. Also the near-field planar element method is presented to calculate the near field of acoustics scattering. The transitional characteristics are obtained for the simple shape targets such as a sphere, an elliptic cylinder and a prolate spheroid. The results provide a theoretical base for the range choosing in measurement of target strength.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2001年第12期1846-1850,共5页
Journal of Shanghai Jiaotong University
基金
国防科技重点实验室基金资助项目
