| 基于GAMIT的不同参数对北斗长基线精度的影响分析 |
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| 引用本文： | 李建涛,朱兰艳,李永梅,金鑫,刘奇,满亚洲.基于GAMIT的不同参数对北斗长基线精度的影响分析[J].全球定位系统,2018,43(5):23-28. |
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| 作者姓名： | 李建涛 朱兰艳 李永梅 金鑫 刘奇 满亚洲 |
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| 作者单位： | 昆明理工大学 国土资源工程学院,云南 昆明 650093 |
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| 摘 要： | 针对较少利用GAMIT软件分析北斗基线的情况,首先利用GAMIT软件解算了北斗长基线,然后选取截止高度角、天顶对流层延迟参数、测站约束值三项控制参数对北斗长基线解进行了影响测试.解算结果表明:GAMIT(10.61)可以成功解算北斗长基线且相对精度在10-8量级;截止高度角的选择对解算精度影响较大;天顶对流层延迟参数个数的设置对解算影响不大但随着参数个数增多精度也有所提高;设置测站不同约束值对基线精度影响较大,选择适当的约束值尤为重要.
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| 关 键 词： | GAMIT(10.61) 北斗长基线 截止高度角 天顶对流层延迟参数 测站约束值 |
Analysis of the Influence of Different Parameters on BeiDou Long Baseline Based on GAMIT |
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| Institution: | School of Land and Resources Engineering, Kunming University of Technology and Science, Kunming 650093,China2.Urumqi land and Resources Survey Institute,Urumqi 830002,China3.School of Geology and Mapping, Chang'an University, Xi'an 710054,China |
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| Abstract: | Aiming at less use of GAMIT software to analyze the BeiDou baseline, firstly we use the GAMIT software to calculate the BeiDou long baseline, then select the cutoff height angle, the zenith troposphere delay parameter, the three control parameters of the measuring station constraint value to test the effect of the BeiDou long baseline solution. The results show that the GAMIT (10.61) can successfully solve the BeiDou long baseline and the relative precision is 10-8 magnitude; the selection of the cutoff height has a great influence on the resolution accuracy, and the setting of the number of the delay parameters of the zenith troposphere has little influence on the solution, but the resolution accuracy also improves with the increasing of the number. It is very important to choose the appropriate constraint value to set the different constraint values of the station to influence the baseline accuracy. |
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