| 星地双向伪距模型的建立与仿真实验 |
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| 引用本文： | 肖云, 王兴涛, 焦文海. 星地双向伪距模型的建立与仿真实验[J]. 武汉大学学报 ( 信息科学版), 2009, 34(7): 766-769. |
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| 作者姓名： | 肖云 王兴涛 焦文海 |
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| 作者单位： | 1西安测绘研究所,西安市雁塔路中段1号710054 |
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| 基金项目： | 国家自然科学基金资助项目(40804001,40604003) |
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| 摘 要： | 根据下行伪距观测模型给出了上行伪距观测模型,比较了主要误差项对于上、下行伪距的不同影响,并模拟了星地双向伪距数据,进一步处理了模拟数据,得到了星地钟差。通过与星地钟差的真值比较,验证了算法的可靠性。
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| 关 键 词： | 星地时间同步 时间传递 时间同步 导航系统 |
| 收稿时间： | 2009-05-05 |
| 修稿时间： | 2009-05-05 |
Modeling and Simulation of Two-Way Links Between Satellites and Ground |
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| XIAO Yun, WANG Xingtao, JIAO Wenhai. Modeling and Simulation of Two-Way Links Between Satellites and Ground[J]. Geomatics and Information Science of Wuhan University, 2009, 34(7): 766-769. |
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| Authors: | XIAO Yun WANG Xingtao JIAO Wenhai |
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| Affiliation: | 1 Xi'an Research Institute of Surveying and Mapping,1 Middle Section,Yanta Road,Xi'an 710054,China |
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| Abstract: | The mathematic model of up-link is set up according to a down-link model.The effects of major errors on the downlink and uplink are compared.The results of some simulated tests are reported,in which two-way links are simulated,the clock offsets between satellits and ground are achieved by processing the simulated data.This method are verified by comparing clock offsets with their truth values.Some meaningful conclusions are made. |
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| Keywords: | time synchronization between satellite and ground time transfer time synchronization satellite navigation system |
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