环境与灾害监测卫星红外相机图像地球自转引入的畸变校正

Correction for Geometric Dismocation Caused Earth Rotation in Remote Sensing Image of Infared Scanner on HJ-1B Satellite

红外相机在卫星绕地球飞行获取遥感图像时,地球也在进行自转。同一幅图像内不同条带的成像时间不一致,将会导致条带间的几何错位,即地球自转引起的几何畸变。在对红外相机成像方式及地球自转模型进行分析的基础上,给出了消除地球自转影响的方法,并进行了校正。

Infrared camera takes remote sensing image when it moves around the earth,however,the earth revolves around itself at the same time.Then different belts in the same image have the different imaging time,making the geometric dislocation within different belts,which is also named as deformation caused by the earth-rotation.The imaging way of infrared scanner and the model of earth＇s rotation are analyzed.Then a way for eliminating the influence of earth＇s rotation is developed.With this method,the images are corrected.