| 引用本文: | 王威,胡利民.GPS和类GPS测距技术联合用于双星编队星座的状态确定.[J].国防科技大学学报,2006,28(5):11-16.[点击复制] |
| WANG Wei,HU Limin.Application of GPS and ‘GPS-like’ Ranging Technology in the States Determination of Double-satellite Formation Constellation[J].Journal of National University of Defense Technology,2006,28(5):11-16[点击复制] |
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| GPS和类GPS测距技术联合用于双星编队星座的状态确定 |
| 王威1, 胡利民1,2 |
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(1.国防科技大学 机电工程与自动化学院，湖南 长沙 410073;2.重庆陆军预备役 后勤保障旅，重庆 400054)
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| 摘要: |
| 编队卫星状态的高精度确定是编队星座功能实现的重要基础。针对对地观测的双星编队星座的状态确定问题，为了提高状态确定的精度，在GPS技术的基础上，引入了类GPS测距技术，建立了联合GPS和类GPS测距技术进行状态整体确定的两种数学模型，并讨论了GPS星间单差模糊度和类GPS星内单差模糊度的同时初始化方法，最后进行了数值仿真。仿真结果显示，类GPS观测值尤其是类GPS星内载波单差观测值的引入，明显提高了双星编队星座的状态确定精度，其中绝对姿态角的精度达到rad，相对位置的精度达到m，相对钟差的精度达到s。仿真证明方法正确有效，模型二更优于模型一。 |
| 关键词: GPS 类GPS测距技术 双星编队星座 状态确定 整周模糊度 |
| DOI： |
| 投稿日期：2006-04-06 |
| 基金项目:国家自然科学基金资助项目(10072076)；国家部委基金资助项目(51400201013KG01) |
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| Application of GPS and ‘GPS-like’ Ranging Technology in the States Determination of Double-satellite Formation Constellation |
| WANG Wei1, HU Limin1,2 |
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(1.College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073, China;2.The Reserve Logistics Support Brigade of Chongqing Army, Chongqing 400054, China)
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| Abstract: |
| Precise determination of formation states provides the foundation for Formation Constellation to carry out its function. In this paper, the state determination problem of double-satellite formation constellation for earth-observation purpose was discussed. On the basis of GPS, a ‘GPS-like’ ranging technology was introduced to improve the state results. Two mathematical models combining ‘GPS-like’ Ranging technology with GPS were built. In this way, a synchronous initialization method for single differential GPS inter-satellite integer ambiguity and single differential ‘GPS-like’ intra-satellite integer ambiguity were also developed. Finally, these models above were simulated and analyzed. The results indicate that, ‘GPS-like’ observation data, especially the single differential ‘GPS-like’ intra-satellite carrier phase data, significantly improved the states results, and the accuracies of absolute attitudes, relative position and relative clock bias respectively reached rad, m and s. The simulation proves that these methods are correct and model II is more accurate than model I. |
| Keywords: GPS ‘GPS-like’ ranging double-satellite formation constellation states determination integer ambiguity |
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