环境卫星影像预处理顺序研究  

Preprocess Order of HJ Satellite Data

作　　者：张周威[1,2] 韩杰[2] 余涛[2] 孟庆岩[2] 

机构地区：[1]北京大学地球与空间科学学院,北京市颐和园路5号100871 [2]中国科学院遥感与数字地球研究所,北京市大屯路甲20号100101

出　　处：《武汉大学学报（信息科学版）》2013年第12期1456-1459,共4页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(41105017)

摘　　要：首先,确定遥感数据辐射校正和几何校正的方法;然后,通过改变辐射/几何校正顺序,设计遥感数据预处理研究流程;最后,在整体上从图像的统计特征和纹理特征两个方面,定量分析辐射/几何校正的先后顺序对处理结果的影响。从统计/纹理特征两个方面对处理结果进行分析,发现校正顺序对结果的影响较小,说明辐射/几何校正顺序的差异对预处理结果的影响较小。In the processing of mass remote sensing products production, the influence resulted from different radiometric and geometric correction orders has not been analyzed overall. So it is highly meaningful to quantitative analyze of the images discrepancy caused by different radiometric and geometric correction orders. It will help to clear the influences caused by the changing correction orders, and also play a significant role on improving the accuracy of quantitative products. We used HJ-1B satellite CCD data as fundamental datum and processed them. Firstly, integrating data characteristics, we determined methods of radiometric and geometric correction. Secondly, technology roadmap was designed by changing the radiation and geometric correction order. Finally, the results obtained by different orders of radiometric calibration and geometric correction were quantitative analyzed from two aspects of statistical characteristics and texture features of images. The experimental results showed that in the statistical and texture indexes of results, most of them had little difference. The experimental results can prove a fact that different correction orders have a little influence on the pretreatment results.

关 键 词：环境卫星 辐射校正 几何校正 

分 类 号：P237.3[天文地球—摄影测量与遥感] TP751[天文地球—测绘科学与技术]