| GPS观测数据中的仪器偏差对确定电离层延迟的影响及处理方法 |
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| 引用本文： | 袁运斌,欧吉坤.GPS观测数据中的仪器偏差对确定电离层延迟的影响及处理方法[J].测绘学报,1999,28(2):110-114. |
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| 作者姓名： | 袁运斌 欧吉坤 |
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| 作者单位： | 中国科学院测量与地球物理研究所动力大地测量学开放研究实验室,武汉,430077 |
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| 摘 要： | 本文通过设计不同的计算方案详细分析了ＧＰＳ观测中的仪器偏差对确定电离层延迟的影响，利用多天实测数据，结合仪器偏差与电离层延迟的分离方法，探讨了仪器偏差的稳定性，并提出了一种静态确定电离层延迟的方案。算例表明它能有效克服仪器偏差影响。
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| 关 键 词： | 全球卫星定位系统(GPS) 仪器偏差 增强型GPS 广域差分系统(WAAS) 电离层延迟 |
The effects of Instrumental Bias in GPS observations on determining ionospheric delays and the methods of its calibration |
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| Yuan Yunbin,Ou Jikun.The effects of Instrumental Bias in GPS observations on determining ionospheric delays and the methods of its calibration[J].Acta Geodaetica et Cartographica Sinica,1999,28(2):110-114. |
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| Authors: | Yuan Yunbin Ou Jikun |
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| Abstract: | The effects of Instrumental Bias(IB) in GPS observations on determining ionospheric delays are analyzed with different calculating schemes in detail and some useful conclusions are drawn. Stability of IB is also researched with the method for separating it from ionospheric delays using multi day GPS data. An improved algorithm about static real time determination of ionospheric delays is presented on the basis of the predicted values of IB and the technique of real time averaging of noise and weighted adjustment of dual P code and carrier phase measurements. Its effectiveness is verified with examples in which the instrumental bias are efficiently calibrated . The algorithm may be used in WAAS. |
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| Keywords: | GPS Instrumental bias WAAS Ionospheric delay |
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