国产推扫式测图卫星影像几何精度评估模型

系统全面地分析并论证了国产推扫式测图卫星影像的几何精度，对卫星测图应用以及后续测绘卫星设计等都具有积极意义。从测图卫星几何成像机理出发，较为系统地分析了卫星成像过程中的轨道误差、姿态误差、时间误差、相机内部误差和星载设备安装误差等对卫星影像平面和高程几何定位误差的影响状况，定量分析并推导了各类误差源对影像几何精度的影响程度，设计并提出了国产推扫式测图卫星影像几何精度评估模型和方法。采用资源三号卫星立体影像开展实验，结果表明，所提出的影像几何精度评估模型获取的理论精度与实验精度符合度较好，模型具有合理性和科学性。

Geometric Accuracy Evaluation Model of Domestic Push-Broom Mapping Satellite Image

This paper systematically analyzes and demonstrates the geometric accuracy of the domestic push-broom mapping satellite images. It is of great positive significance to the satellite mapping application and design of the follow-up surveying and mapping satellite. According to the geometric imaging mechanism of mapping satellite, this paper systematically analyzes how orbit errors, attitude errors, time errors, camera internal errors and space-borne equipment installation errors can influence the satellite image plane and elevation geometric positioning errors, and quantitatively analyzes and deduces the impacts on image geometric precision caused by these error sources. Then, geometric accuracy evaluation model and method for the domestic push-broom mapping satellite image are proposed. Experiment on the stereo images of Ziyuan-3 satellite shows that the theoretical accuracy obtained by the evaluation model and method we raised has a great consistent with the experimental value, which proves the reasonableness and scientificity of the model proposed.