基于辐射状靶标的天绘一号卫星CCD相机分辨率在轨检测

The In-Orbit Resolution Detection of TH-01 CCD Cameras Based on the Radial Target

分辨率是表示摄影成像系统和评价影像质量的重要指标,准确把握成像系统的分辨率在轨变化情况,关系到遥感影像的合理有效利用。本文采用地面铺设辐射状靶标的方法,利用天绘一号卫星获取的靶标影像,对搭载的CCD相机分辨率进行在轨检测,计算了成像系统沿轨和垂轨方向的分辨率,简要分析了检测结果的合理性。

Resolution shows an important indicator of the photography imaging systems and the evaluation of image quality,and accurate grasping of the image system resolution in-orbit changes is concerned with the efficient use of the remote sensing images.The CCD camera resolution in-orbit is detected with the method of laying the radial targets on the ground,and the resolution of the imaging systems both along the rail and the vertical rail direction is calculated by using the target image acquired by the TH-01 Satellite.The reasonableness of the results is briefly analyzed in this paper.