摘要
目标由于处于大气中,大气对红外辐射衰减不可避免。大气的成分复杂且大气的状况也是随着气象条件而变化,所以不同时间、地点大气的分子和微粒对红外辐射产生的衰减不同。本文中考虑的是大气(水蒸气和二氧化碳分子)产生的吸收衰减以及散射作用,并且修正了由于高度、斜程和气象条件引起变化的大气透射率。最后用LOWTRAN软件计算出大气透射率。
The target is in the air,so the atmospheric attenuation to infrared radiation is inevitable.The composition of atmosphere is complex and the condition of atmosphere is also changed with the meteorological conditions.The particulate and molecules of atmosphere have different attenuation to infrared radiation in different time and place.This paper considers attenuation and scattering effect that the atmosphere produced.Then fix the atmosphere transmission that is due to the change of the high and the oblique distances.Finally,apply the LOWTRAN software to calculate the atmosphere transmission.
出处
《仪器仪表用户》
2011年第3期16-19,共4页
Instrumentation
关键词
大气透过率
红外系统
作用距离
infrared system
atmosphere transmission
performance model
