【摘要】 遥感资料的准备和处理是遥感技术在实际应用中的核心工作,文中探讨了利用ERDASIMAGING软件对闽江流域TM影像进行几何精校正的方法,并对ERDAS IMAGING软件中相关模型参数设置及原理、地面控制点的设置进行了研究,为后期的闽江流域资源动态监测打下基础。结果表明:影响几何精校正的主要因素是GCP的数量、分布和定位精度及校正方法和重采样方法;一景影像采用14-18个GCP其纠正精度可以控制在半个像元以内,本研究校正所得闽江流域影像的纠正精度为0.225 4个像元,符合资源动态监测的精度要求。更多还原

【Abstract】 The preparation and processing of remote sensing material are important in the practical application of remote sensing technology.This paper discusses the method of Mingjiang River′s TM imagery geometric precision based on ERDAS IMAGING.The parameter selection and control point input are studied for future use in dynamic resources monitoring.The results indicate that the main factors affecting geometrical calibration are number,distribution and precision of GCP,and the approaches for calibration and resampling.With 14 to 18 GCP,correction precision can be controlled within half of a pixel.The correction precision of Mingjiang River′s TM imagery obtained through geometric precision is 0.225 4 pixel,which conforms to the required precision of dynamic resources monitoring.更多还原