| 引用本文: | 杏建军,郗晓宁,王威,等.基于球坐标变换的双星编队伪距相对定位.[J].国防科技大学学报,2002,24(4):16-19.[点击复制] |
| XING Jianjun,XI Xiaoning,WANG Wei,et al.Pseudorange Positioning of Two Formation Flying Satellites Using Sphere Coordinate System[J].Journal of National University of Defense Technology,2002,24(4):16-19[点击复制] |
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| 基于球坐标变换的双星编队伪距相对定位 |
| 杏建军, 郗晓宁, 王威, 韩龙 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 针对NASA的ST-3中自主编队飞行（AFF）的双星星座，讨论利用星载的类GPS高精度的伪距观测数据确定星座之间相对位置和时间参数的问题。在常用的直角坐标系中建立系统的数学模型，并进行解算；特别针对双星编队定位解算几何结构弱、解算结果的协方差矩阵不稳定而无法进行传统协方差分析的问题，提出了基于球坐标变化的伪距定位方法。 |
| 关键词: 编队星座 伪距 星间相对测量 球坐标 |
| DOI： |
| 投稿日期：2002-02-05 |
| 基金项目:国家自然科学基金资助项目（10072076） |
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| Pseudorange Positioning of Two Formation Flying Satellites Using Sphere Coordinate System |
| XING Jianjun, XI Xiaoning, WANG Wei, HAN Long |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| This paper describes the research on the pseudorange positioning of Autonomous Formation Flyer (AFF) of two satellites using pseudolites onboard, which is proposed by the NASA's Space Technology (ST-3). We build model and resolve relative position and time bias between satellites using Cartesian coordinate. The solution error covariance is very grave and unstable because observation geometry is very weak. In order to resolve this problem, we change Cartesian coordinate into sphere coordinate. It can be found that in the sphere coordinate system the solution error covariance is stable and can be used for simulation/covariance analysis. |
| Keywords: formation constellation pseudorange relative measure sphere coordinate |
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