【摘要】 卫星遥感数字图像成像过程中,由于电磁波受大气作用造成数据质量下降,影响遥感信息的提取及精度。介绍了大气辐射校正的一般原理和PCI软件ATCOR2模块的算法,研究了基于该模块的遥感数字图像大气辐射校正实现方法。根据研究区实际情况,选用1976年美国标准大气乡村气溶胶大气参数,对一景LandsatTM影像进行校正处理。对比处理前后图像和直方图,可知该方法增强了图像清晰度,提高了视觉效果,有利于遥感信息提取和专题解译。更多还原

【Abstract】 The atmosphere modifies the radiance reflected at the ground and contributes an additive path radiance term in the process of acquiring remote sensing image. Introducing the principle of the atmospheric radiation correction and the algorithm of PCI’s ATCOR2 module, and studying the atmospheric radiation correction method of remote sensing image based on this module, and then using the ATCOR2 module to correct a scene of Landsat TM images. The atmospheric radiation correction of the digital image by ATCOR2 module enhances the definition of the image, ameliorates the visual effect and benefits the information extraction and thematic interpretation of the remote sensing image.更多还原