遥感卫星几何产品真实性检验方法与应用

Methods and application for the validation of remote sensing geometrical products

遥感影像产品的几何精度是评价遥感卫星影像质量的一个重要指标,反映卫星传感器的技术水平,对遥感影像数据的应用具有重要影响。基于当前遥感卫星几何产品真实性检验研究相关成果,从检验数据源的角度,将几何产品真实性检验方法分为基于地基数据的检验方法和基于参考影像数据的检验方法,并介绍两种方法的基本原理、操作步骤和流程、优缺点以及研究现状。最后,应用基于参考影像数据的真实性检验方法对国产GF-1卫星WFV1相机影像的定位精度进行检验。对今后遥感卫星几何产品的真实性检验具有参考与指导意义。

Geometrical quality is an important indicator to evaluate the quelity of remote sensing satellite images, which reflects the technological level of satellites sensor and makes a significant impact on remote sensing data application. Based on the current study results on the validation of remote sensing satellite geometrical products, geometrical products validation methods are divided into the method based on ground based data and the method based on reference image data from the perspective of the validation data source in this paper, and the basic principle, steps and process, advantages and disadvantages and current status of the two methods are introduced. Finally, the method based on reference image data is applied to the geometric precision validation of GF-1 WFV1 camera images, which can provide a reference and guiding information for the future research on remote sensing satellite geometrical products validation.