| GPS数据处理策略对成果精度的影响及可靠性分析 |
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| 引用本文： | 邓标,郭若成,李晓明,王靖,邓岳川.GPS数据处理策略对成果精度的影响及可靠性分析[J].天文研究与技术,2021(2):263-271. |
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| 作者姓名： | 邓标 郭若成 李晓明 王靖 邓岳川 |
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| 作者单位： | 滁州学院地理信息与旅游学院;武汉地震计量检定与测量工程研究院有限公司 |
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| 基金项目： | 安徽省科技项目(2019kfkc144);滁州学院人才启动项目(2019qd03);安徽省“六卓越、一拔尖”卓越人才培养创新项目(2019zyrc105);安徽省测绘工程教学团队项目(2019jxtd109)资助. |
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| 摘 要： | 高精度全球定位系统(Global Positioning System,GPS)数据处理的成果精度往往受海潮模型、卫星轨道约束模式、星历产品等数据类型及处理策略的制约。在考虑上述影响因素的前提下进行相关实验,并基于误差理论提出一种增加基线解算次数组合平差的方法,以提高基线解算精度。实验结果表明,数据处理中置入海潮模型较未采用前精度更高,FES2004模型的内外符合精度整体最优,近海区NAO99b外符合精度占优,其它海潮模型基本相当;松弛轨道模式内符合精度较固定轨道模式内符合精度高,但外符合精度较轨道固定模式稍差。不同的精密轨道产品对最终解算结果影响较小,增加基线解算次数组合平差的方法对数据处理成果精度的提高具有明显效果,且在几种精密星历下均表现出良好的收敛性。
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| 关 键 词： | 海潮模型 轨道模式 星历产品 基线解算次数 |
The Influence of GPS Data Processing Strategy on the Accuracy of Results and Reliability Analysis |
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| Deng Biao,Guo Ruocheng,Li Xiaoming,Wang Jing,Deng Yuechuan.The Influence of GPS Data Processing Strategy on the Accuracy of Results and Reliability Analysis[J].Astronomical Research & Technology,2021(2):263-271. |
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| Authors: | Deng Biao Guo Ruocheng Li Xiaoming Wang Jing Deng Yuechuan |
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| Institution: | (School of Geographic Information and Tourism,Chuzhou University,Chuzhou 239000,China;Wuhan Seismic Metrological Verification&Surveying Engineering Institute Corporation,LTD,Wuhan 430000,China) |
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| Abstract: | In the high-precision GPS data processing,the precision of resolution is often restricted by the data processing strategies such as the the ocean tide models,the constraint mode settings of satellite orbital,and types of precise ephemeris products.In this paper,relevant experiments are carried out considering the above influencing factors,a method to increase number of baseline solution and combination adjustment is proposed to improve the accuracy of baseline solution based on the error theory.The experimental results indicate that the accuracy of the results of the ocean tide model inserted in the data processing is better than not using the model;the FES2004 model has the best internal and external coincidence accuracy;the NAO99b external coincidence accuracy is much better in the offshore area,and the effect of other tide models is basically the same level on the accuracy of the results;the inner coincidence precision of relaxed orbit method is better than that of fixed orbit method,but the outer coincidence precision is lower.Different precision orbital products have slight difference on the final solution.The method proposed in this paper has significant effect on improving the precision of the GNSS data processing,and it also has rapid convergence rate with different precise ephemeris. |
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| Keywords: | Ocean tide model Orbital mode Ephemeris products Number of baseline solution |
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