1064nm激光大气透过率数据库的建立与应用

利用FASCODE计算出1064nm激光的大气透过率,建成透过率数据库,该数据库对应的大气模型为中纬度夏季,斜程范围为(0～10)kin(间隔0.1km),仰角范围为0°～90°(间隔5°),地面能见度范围为(5～20)km(间隔1km),数据库可以根据需要进行扩展.通过对透过率数据曲线进行分析,发现有极少数的数据点不合常理,即随距离增加透过率也略微增加,这是FASCODE软件的Bug.为此,编写了数据修正程序,利用人工介入方法剔除不合常理的数据点;并采用三次c样条插值的方法,补充被剔除的数据点.修正后的数据库,便于在相关软件的迭代计算中调用,如用于激光制导武器作战训练、光电对抗仿真等课题的研究.

Creation and Application of the Atmospheric Transmittance Database for 1064nm Laser

The atmospheric transmittance database for 1064nm laser is created basing on the FASCODE.The model atmosphere is midlatitude summer. The slant path length covers (0~10)km with the alternation of 0.1km. The elevation covers 0°~90° with the alternation of 5°.The surface range covers (5~20)km with the alternation of 1km. The database could be enlarged easily. As the transmittance curves being analyzed,a few of data dots shows abnormal that the transmittance swell a little as the path length increasing. So that a bug is found in FASCODE.A rectifying program is compiled to eliminate the abnormal data dots with the help of artificial selection. The eliminated dots are replaced by cube C spline interpolation. The renewed database could be used expediently for iterative computering,which is often confronted in the researches of laser guide weapon training or photoelectricity countermeasure emulate system.