| 利用GPS三频观测值监测电离层TEC及其变化率 |
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| 引用本文： | 何畅,蔡昌盛.利用GPS三频观测值监测电离层TEC及其变化率[J].全球定位系统,2014,39(4):60-63. |
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| 作者姓名： | 何畅 蔡昌盛 |
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| 作者单位： | 中南大学地球科学与信息物理学院,湖南长沙,410083 |
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| 摘 要： | 三频观测数据为监测电离层总电子含量提供了更多的观测值选择。在双频观测值估算电离层总电子含量的原理基础上,利用不同纬度地区的三频GPS观测资料计算获得了电离层总电子含量值及其变化率。分析结果表明：由于GPS接收机码间偏差的影响,不同频率间组合获得的电离层总电子含量结果出现较大的系统差异,使用不同频率组合获得的电离层TEC变化率有很好的一致性。
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| 关 键 词： | 三频 总电子含量 总电子含量变化率 |
Monitoring Ionospheric TEC and its Rate Using Triple-frequency GPS Observations |
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| HE Chang,CAI Changsheng.Monitoring Ionospheric TEC and its Rate Using Triple-frequency GPS Observations[J].Gnss World of China,2014,39(4):60-63. |
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| Authors: | HE Chang CAI Changsheng |
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| Institution: | (School of Geosciences and In f o-Ph ysics , Central South University, Changsha Hunan 410083, China) |
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| Abstract: | Triple-frequency data offers more observation choices for ionospheric total e- lectron content （TEC） monitoring. Based on the method of calculating ionospheric TEC with dual-frequency GPS observations, triple-frequency GPS observations collected at different latitudes are used to calculate the TEC and its rate. The results indicate that there are large systematic differences between the TECs derived from different frequency combinations due to an existence of differential code biases （DCB）. The corresponding TEC rates have a good consistency. |
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| Keywords: | Triple-frequency TEC TEC rate |
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