测绘学报 ›› 2016, Vol. 45 ›› Issue (3): 282-290.doi: 10.11947/j.AGCS.2016.20150206

• 大地测量学与导航 • 上一篇    下一篇

天绘一号三线阵相机在轨几何参数精化

耿弘毅1,2, 龚志辉1, 高超2, 杨戬峰2, 唐可2   

  1. 1. 信息工程大学地理空间信息学院, 河南 郑州 450001;
    2. 中国天绘卫星中心, 北京 102102
  • 收稿日期:2015-04-20 修回日期:2015-12-21 出版日期:2016-03-20 发布日期:2016-03-25
  • 作者简介:耿弘毅(1990-),男,硕士,助理工程师,主要从事航天遥感高精度对地目标定位研究。

On-orbit Geometric Parameters Refinement of Mapping Satellite-1 Triple Line Array Camera

GENG Hongyi1,2, GONG Zhihui1, GAO Chao2, YANG Jianfeng2, TANG Ke2   

  1. 1. Institute of Geographical Spatial Information, Information Engineering University, Zhengzhou 450001, China;
    2. Center of TH-Satellite of China, Beijing 102102, China
  • Received:2015-04-20 Revised:2015-12-21 Online:2016-03-20 Published:2016-03-25

摘要: 为了找到适合天绘一号卫星三线阵相机在轨几何精化的模型和算法,首先分析了外方位线元素误差在几何参数精化中的影响,然后通过对定姿数据的预处理,消除了其中含有的高频噪声,并用正弦函数补偿了卫星平台飞行过程中的低频抖动,为三线阵相机每个镜头设计了姿态角常差模型。此外,根据传统的附加参数模型,构建了直接以像素坐标为观测值的内方位元素模型,并使用单侧有控外推的方式,确定最佳的精化模型参数组合及求解策略。试验表明,采用本文的精化方案,利用合理分布的控制点,天绘一号能达到平面精度约1 GSD,高程精度约0.8 GSD。

关键词: 天绘一号卫星, 几何参数精化, 外方位元素, 内方位模型, 立体定位

Abstract: To find the model and method of on-orbit geometric refinement suitable for the triple line array camera of Mapping Satellite-1, this paper first analyzed the impact of the exterior orientation line element error on the geometric parameters refinement, then eliminated the high-frequency noise by the preprocessing of the attitude data, and compensated the low-frequency flutter of satellite platform in the course of flying by sine function and designed the constant angular error model for the lens of the triple line array camera. In addition, an interior orientation model, using directly pixel coordinates as observations, was constructed based on conventional additional parameter model and the combination of the best refinement model parameters and the solution strategy were determined by the unilateral control extrapolative location. The experiments show that the planar accuracy and vertical accuracy are about 1 GSD and 0.8 GSD by the proposed refinement plan and the rational distribution of GCPS.

Key words: Mapping Satellite-1, geometric parameters refinement, exterior orientation elements, interior orientation model, stereo positioning

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