| 高动态GPS卫星信号模拟器电离层延迟误差模拟方法研究 |
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| 引用本文： | 赵军祥,常青,张其善,张军.高动态GPS卫星信号模拟器电离层延迟误差模拟方法研究[J].中国航空学报,2003,16(3):169-176. |
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| 作者姓名： | 赵军祥 常青 张其善 张军 |
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| 作者单位： | Department of Electronic Engineering，Department of Electronic Engineering，Department of Electronic Engineering，Department of Electronic Engineering Beijing University of Aeronautics and Astronautics，Beijing 100083，China，Beijing University of Aeronautics and Astronautics，Beijing 100083，China，Beijing University of Aeronautics and Astronautics，Beijing 100083，China，Beijing University of Aeronautics and Astronautics，Beijing 100083，China |
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| 基金项目： | National Natural Science F oundation of China ( Grant No.60 0 2 70 0 1) |
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| 摘 要： | 电离层延迟误差是GPS测量中非常重要的一项误差源，也是高动态GPS卫星信号模拟器要解决的一项关键技术。电离层延迟误差与目标的空间位置有关，在分析地面用户和空问用户不同电离层延迟误差修正方法的基础上，研究了卫星信号模拟器电离层延迟误差产生的途径，并给出了相应的数学模型，解决了不同应用环境下导航电8个电离层修正参数的计算问题，通过仿真计算，验证了本所提出的电离层延迟计算模型的正确性。
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| 关 键 词： | GPS测量 电离层延迟误差 卫星信号模拟器 计算模型 卫星导航 |
Research of Ionospheric Time-Delay Error Simulation in High Dynamic GPS Signal Simulator |
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| ZHAO Jun-xiang,CHANG Qing,ZHANG Qi-shan,ZHANG Jun.Research of Ionospheric Time-Delay Error Simulation in High Dynamic GPS Signal Simulator[J].Chinese Journal of Aeronautics,2003,16(3):169-176. |
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| Authors: | ZHAO Jun-xiang CHANG Qing ZHANG Qi-shan ZHANG Jun |
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| Abstract: | The ionospheric time-delay is an important error source for GPS users. How to simulate the ionospheric error is one of the key problems that need to be solved in high dynamic GPS signal simulator design. The ionospheric effects are related to the user's position. Based on the analysis to the different ionospheric time-delay error correction methods for ground users and space users, the approaches to calculate the ionospheric time-delay error in a high dynamic GPS signal simulator are studied and the mathematic models are also given in this paper. The calculation problem of eight ionospheric coefficients broadcasted in a GPS satellite message in different application situations is solved. The validity of the ionospheric time-delay error calculation methods given by this paper has been proved by simulations. |
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| Keywords: | GPS satellite signal simulator ionosphere simulation |
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