| 精密单点定位中卫星星历对天顶对流层延迟估计的影响 |
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| 引用本文： | 徐爱功,徐宗秋,隋心.精密单点定位中卫星星历对天顶对流层延迟估计的影响[J].测绘科学,2013,38(2):19-21. |
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| 作者姓名： | 徐爱功 徐宗秋 隋心 |
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| 作者单位： | 1. 辽宁工程技术大学测绘与地理科学学院,辽宁阜新,123000
2. 辽宁工程技术大学测绘与地理科学学院,辽宁阜新123000;武汉大学卫星导航定位技术研究中心,武汉430079 |
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| 基金项目： | 辽宁省高等学校优秀人才支持计划资助，辽宁省自然科学基金资助，国家测绘局测绘基础研究基金资助项目，精密工程与工业测量国家测绘地理信息局重点实验室开放基金 |
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| 摘 要： | 为了分析不同卫星星历对天顶对流层延迟估计的影响,本文选取不同的卫星星历产品分别进行静态精密单点定位试验,估计天顶对流层延迟,并与IGS发布的天顶对流层延迟产品相比。结果表明,采用最终星历、快速星历和超快星历实测部分时,天顶对流层延迟的平均RMS值分别为4.5mm、4.3mm和4.6mm,估计精度一致。而采用超快星历外推部分时,平均RMS值为6.3mm,估计精度略低。
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| 关 键 词： | 卫星星历 天顶对流层延迟 参数估计 精密单点定位 精度分析 |
Influence of satellite ephemeris on estimation of zenith tropospheric delay in precise point positioning |
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| XU Ai-gong,XU Zong-qiu,SUI xin.Influence of satellite ephemeris on estimation of zenith tropospheric delay in precise point positioning[J].Science of Surveying and Mapping,2013,38(2):19-21. |
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| Authors: | XU Ai-gong XU Zong-qiu SUI xin |
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| Institution: | ①②(①School of Geomatics,Liaoning Technical University,Liaoning Fuxin 123000,China;②Research Center of GNSS,Wuhan University,Wuhan 430079,China) |
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| Abstract: | In order to analyze the influence of different kinds of satellite ephemeris products on the estimation of zenith tropospheric delay in precise point positioning,different satellite ephemeris products were tested respectively in static to estimate zenith tropospheric delays in the paper,which were compared with the products of IGS zenith tropospheric delay then.The results showed that the zenith tropospheric delay estimation accuracy with final ephemeris is consistent with rapid ephemeris and ultra-rapid ephemeris(observed half).The mean RMS values were 4.5mm,4.3mm and 4.6mm,respectively.While,the mean RMS value of zenith tropospheric delay with ultra-rapid(predicted half) ephemeris was 6.3mm,which is slightly lower. |
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| Keywords: | satellite ephemeris zenith tropospheric delay parameter estimation precise point positioning accuracy analysis |
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