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为了控制高分雷达遥感数据正射纠正精度,选择满足要求的控制点采集方法,对图像采集和实地布设角反射器(CR)两种采集正射纠正控制点的方法进行对比分析,结果表明,传统图像采集控制点方法可以保证纠正精度整体控制在5个像素内,采用角反射器采集控制点的方法可以控制在半个像素左右。因此,在土地调查与监测中,以发现地物变化为主要目的,对地物绝对精度要求不高,可从参考影像采集控制点,否则需选择角反射器实测控制点。
In order to control orthorectification accuracy of high-resolution radar remote sensing data and choose control point acquisition method which satisfies the requirements, two methods of collecting orthographic correction control points of image acquisition and field distribution corner reflector (CR) are comparatively analyzed. The results show that, The traditional image acquisition control point method can ensure that the correction accuracy is controlled within 5 pixels in total, and the method of acquiring the control point by the corner reflector can be controlled at about half a pixel. Therefore, in the land survey and monitoring, in order to detect the change of the features as the main purpose, the absolute accuracy of the objects is not high, and the control points can be collected from the reference image. Otherwise, the control points of the corner reflectors should be selected.