基于光谱关联修正多光谱相机的带外响应  

Modified Multispectral Camera out-band Response Base on Correlation Spectrum

作　　者：李旭阳[1] 易红伟[1] 贺天兵[1] 

机构地区：[1]中国科学院西安光学精密机械研究所,西安710119

出　　处：《光子学报》2015年第9期55-59,共5页Acta Photonica Sinica

基　　金：中国科学院西部之光资助项目~~

摘　　要：多光谱遥感可以同时获取地面景物的几何信息和光谱信息,在光学遥感领域具有广泛的应用前景,但多光谱相机的蓝色谱段更易出现带外响应.本文通过建立多光谱遥感相机光谱响应的数学模型,分析了蓝色谱段易于出现带外响应的原因,并根据多光谱遥感相机采用的时间延时积分电荷耦合器件的各谱段光谱响应之间的关系,基于各谱段间的光谱响应关联,提出了蓝色谱段带外响应的修正方法,通过对各种典型地物的统计得到了去除带外响应的修正公式,对典型地物进行修正后的残差可以小于4%,能够满足多光谱遥感相机的应用需求.带外响应的修正结果表明:基于多光谱相机谱段间的光谱关联修正方法对不同地物具有较好的适应性,可以有效地修正蓝光谱段的带外响应.Multispectral remote sense camera can obtain geometic and spectral properties of the surface scenery, and will be wildly used in optical remote sense fields, but the blue spectrum of multispectral camera is more prone to out-band response. The paper established a mathematieal model of multispeetral remote sense camerars spectral response, analyzed the reason of the blue band out-band response, and proposed blue spectrum out-band response correction method according to each spectral response relationship of multispectral remote sense camera used Time-Dealy-Integration Charge-Coupled-Device. Through statistics of typical objects obtain the correction formula of correction blue spectrum out-band response, the corrected residuals can be smaller than 4%, can meet the application requirement of multispectral remote sense camera. The correction results show that the correction method based on each spectral response has better applicability in correcting the blue spectrum out-band response.

关 键 词：多光谱遥感 带外响应 光谱关联 修正 

分 类 号：TP722[自动化与计算机技术—检测技术与自动化装置]