水下探测中球体目标的回波信号研究与分析  

Study and analysis of echo signal of sphere of the object under the water

作　　者：江飞[1] 钟晓春[1] 袁茂钱[1] 

机构地区：[1]西南交通大学理学院,四川成都610031

出　　处：《红外与激光工程》2008年第S2期774-777,共4页Infrared and Laser Engineering

基　　金：自然科学基金(60572079);西南交通大学校基金项目(2006B11)

摘　　要：水下探测中,由于水物质本身的特性,水对激光具有吸收和散射的作用,对激光传播具有很大的影响。光的能量将随着距离增大变得越来越小,到达目标后,目标的形状,大小对激光反射回的信号将会产生极大的影响。由于激光器到目标上各点所经历的光程是不同的,因此在每条光程上的衰减也将不同。在充分考虑各光程不同的条件下,利用解析方法推导出球体目标的回波信号功率方程。最后得出在忽略与未忽略各光程间差异这两种情况下得到的信号功率随着水质参数、目标大小的增大,它们之间的差异也增大的结论。During detecting under the water, because of the character of water matter of scattering and absorbing, laser s transmittance has been influenced greatly. The energy of laser will reduce along with the augmentation of distance, and the object s shape and size will effect on signal power after arriving at an object. For the difference of each optical path from laser to object, the attenuation is also different on every optical paths. Sufficiently considering the various of optical paths, an equation of echo ...

关 键 词：散射 吸收 激光 水质参数 

分 类 号：TN247[电子电信—物理电子学]