晨昏时段大气辐射对成像有效信噪比的影响  

Impact of Atmospheric Radiance on Efficient Imaging Signal-to-noise Ratio in Twilight Environment

作　　者：宋鹏飞[1] 王世涛[2] 王小勇[1] 

机构地区：[1]北京空间机电研究所,北京100076 [2]中国空间技术研究院,北京100094

出　　处：《航天返回与遥感》2009年第2期30-36,共7页Spacecraft Recovery & Remote Sensing

摘　　要：从成像有效信噪比的角度出发,利用MODTRAN辐射传输软件,分析计算了晨昏时段大气辐射的分布特点及其对成像的潜在影响。结果表明选择近红外成像谱段,可有效抑制大气背景辐射,实现晨昏时段一定观测倾角下的目标探测能力。Based on the model of effective signal - to - noise ratio, the distribution feature and potential impacts of the atmospheric radiance in twilight environment were proposed by using MODTRAN. Further simulation indicated that path radiance could be efficiently restrained by selecting NIR band, and met the need of target detection in twilight environment under certain observation inclination angle.

关 键 词：有效信噪比 程辐射 辐射传输 晨昏 遥感 

分 类 号：P422[天文地球—大气科学及气象学] TP391.4[自动化与计算机技术—计算机应用技术]