大气衰减系数对激光测距能力影响的研究  

The influence of the coefficient of atmospheric attenuation to the capability of laser ranging

作　　者：王海先[1] 叶艾[1] 

机构地区：[1]华中光电技术研究所,湖北武汉430073

出　　处：《舰船科学技术》2007年第6期116-119,共4页Ship Science and Technology

摘　　要：介绍了用经验值、经验公式、透过率(PcModwin4.0)3种不同的方法确定大气衰减系数,然后再用测距方程计算激光测距能力,得到3种不同的结果,用经验值计算的结果相差较大,用经验公式和透过率计算的结果接近。为检验哪一种方法计算的结果与实际测距能力相近,采用激光测距仪对实际目标测距的方法进行检验,通过实际测距,证明用经验公式计算的测距能力与真实测距能力接近。而透过率法由于需要确定的气象参数较多,计算较为复杂,因此,建议在近红外波段,采用经验公式法确定大气衰减系数。Three methods of computing the coefficient of atmospheric attenuation are introduced in this paper,which are the methods of experiential value, experiential formula and the transmittance （PcModwin4.0）. Three results of capability of ranging are obtained by ranging formula with different methods. The result of experiential value is different to actual and the result of experiential formula is closed to transmittance. In order to get the right result we take some experiments in range finding of an object. It is proved that the result of the method of experiential formula approaches to reality. For there are many meteorological parameters and the complex computation in the method of transmittance, the method of experiential formula is recommended in the measurement of the coefficient of atmospheric attenuation in near-infrared band.

关 键 词：大气衰减系数 激光测距 测距能力 透过率 

分 类 号：TH744.5[机械工程—光学工程]