新的区域电离层模型及单频长基线精度分析 |
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引用本文: | 袁艳斌,李翌舟,熊良晨,邹璇.新的区域电离层模型及单频长基线精度分析[J].地理空间信息,2012,10(6):47-49,4. |
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作者姓名: | 袁艳斌 李翌舟 熊良晨 邹璇 |
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作者单位: | 1. 武汉理工大学资源与环境工程学院,湖北武汉,430070 2. 武汉理工大学资源与环境工程学院,湖北武汉430070 中国银行武汉中北支行,湖北武汉430077 3. 武汉大学卫星导航定位技术研究中心,湖北武汉,430079 |
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基金项目: | 武汉大学测绘遥感信息工程国家重点实验室开放基金资助项目,中国博士后科学基金资助项目 |
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摘 要: | 电离层延迟是影响GPS精密定位的主要因素,对单频接收机的影响尤为明显。介绍了一种新的基于区域双频观测网构建电离层模型的方法,并选取德国境内平均基线超过300 km(最长基线为461 km)的一个长距离观测网连续10 d的数据对模型进行了检测分析。实验证明,基于该电离层模型,网内单频接收机用户可获得接近双频观测数据的解算精度,即使对于200 km的长距离基线,单频数据的基线解算结果都能够达到平面方向6 mm,高程方向2.5 cm。区域电离层延迟模型构造方法可被有效应用于GPS、GLONASS和GALILEO等各类卫星导航定位系统,满足事后、实时或准实时单频接收机精密数据处理的需要。
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关 键 词: | 全球定位系统 电离层模型 大区域观测网 单频 基线处理 |
New Model of Regional Ionosphere and the Analysis of Long-baseline Processing with Single-frequency Receiver |
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Institution: | YUAN Yanbin |
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Abstract: | One of the major error sources in the GPS is ionosphere. We introduced a new model of regional ionosphere, and tested its precision and reliability based on a large regional GPS network in Germany (including 5 monitoring sites about 300 km in average, and the longest baseline of this network is 461km). The efficiency of this model had been compared with actual dual-frequency observations processing results at 12 checking sites for continuous 10 days. We found that baselines up to 200 km in length could be precisely determined. The average precision is 6 mm, 2.5cm in plane and altitude directions respectively. This model can even be applied in GPS, GLONASS and GALILEO system for real-time (or near real-time) applications in future. |
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Keywords: | GPS ionospheric model large regional network singlefrequency baseline processing |
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