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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.
Multi-spectral remote sensing can obtain both the geometric information and the spectral information of the ground scene at the same time, which has a wide range of applications in the field of optical remote sensing, but the blue spectral range of the multi-spectral camera is more prone to out-of-band response.Through the establishment of mathematics of spectral response of multi-spectral remote sensing camera Model is used to analyze the reasons that the out-of-band response to blue spectrum is liable to occur. Based on time-delay integration of multi-spectral remote sensing cameras, the relationship between the spectral responses of charge- , A correction method of out-of-band response to the blue spectral band is proposed. The correction formula for removing the out-of-band response is obtained through statistics on various typical features. The residuals after the correction of typical features can be less than 4% The application of spectral remote sensing camera.The correction results of out-of-band response show that the spectral correlation correction method based on multi-spectral camera spectral bands has good adaptability to different ground objects and can effectively correct the out-of-band response of blue spectral range.