新一代高分辨率卫星遥感器全色波段展宽研究  

Study on Panchromatic Band Broadening of New High-Resolution Satellite Sensor

作　　者：何文斌[1,2] 周川[1] 牛铮[1] 梁利姣[3] 

机构地区：[1]中国科学院遥感应用研究所遥感科学国家重点实验室,北京100101 [2]东莞理工学院计算机学院,广东东莞523808 [3]东莞理工学院城市学院,广东东莞523106

出　　处：《光谱学与光谱分析》2010年第7期1894-1897,共4页Spectroscopy and Spectral Analysis

基　　金：中国科学院知识创新工程重要方向项目(KZCX2-YW-313);遥感科学国家重点实验室科研资助基金项目(KQ060006);国家重点基础研究发展规划项目(2007CB714406);广东省科技计划项目(2009B010900011)资助

摘　　要：遥感器的研制任务中,工作波段的选择对于目标探测与识别至关重要。文章利用MODTRAN4模型模拟将卫星光学遥感器的工作波段从0.50～0.85μm展宽到0.45～0.90μm所引起的大气效应和成像质量的变化。实验结果表明,波段展宽后虽然会引起大气透过率、路径程辐射、邻近效应等不利因素的稍微增加,但是相对于入瞳辐亮度、目标-背景对比度以及模拟图像的质量的提高几乎可以忽略。总的来说,0.45～0.90μm的波段设置优于0.50～0.85μm,在已发射高分辨率卫星遥感器中得到更广泛的应用。For developing a remote sensor, the selection of operating waveband is one of the most important factors for detecting and identifying target. In the present paper, the changes of atmospheric effects and imagery quality are simulated due to the increase in the response wave range of optical remote sensor from 0.50-0. 85 mm to 0. 45-0.90 mm by using MODTRAN4. The experimental results show that there is a slight increase of the adverse factors, including atmospheric transmittance, path radiance, and adiacency effect, after the working waveband has been widened. The disadvantages compared with the improvement in incident radiance, target-background contrast and image quality are negligible, In summary, the scheme of 0. 45-0.90 mm is superior to 0.50-0.85 mm and it has been more widely used in the on-orbit operation high-resolution satellite sensor.

关 键 词：高分辨率 波段选择 MODTRAN 模拟 大气辐射 

分 类 号：P422.3[天文地球—大气科学及气象学]