| 利用相位平滑伪距和最小二乘曲面函数建立西安市区域电离层延迟模型 |
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| 引用本文： | 涂锐,张勤,黄观文,凌晴.利用相位平滑伪距和最小二乘曲面函数建立西安市区域电离层延迟模型[J].武汉大学学报(信息科学版),2011(2):218-221. |
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| 作者姓名： | 涂锐 张勤 黄观文 凌晴 |
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| 作者单位： | 长安大学地测学院; |
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| 基金项目： | 国家自然科学基金资助项目(40902081,40774001,40841021); 国家863计划资助项目(2007AA12Z331) |
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| 摘 要： | 利用相位平滑伪距观测值,并采用附有限制条件的序贯最小二乘曲面拟合方法,研究构建了西安区域电离层延迟模型。该模型的内符合平均精度为6.9 cm,外符合平均精度为8.8 cm,通过与全球格网电离层延迟模型计算的电子含量进行对比,并将两种模型进行单频PPP定位测试。结果显示,区域电离层延迟模型的精度明显优于格网电离层延迟模型的精度。
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| 关 键 词： | 相位平滑伪距 电离层延迟 序贯最小二乘 电离层延迟模型 |
Establishment of Regional Ionospheric Delay Model in Xi'an Based on Phase Smoothing Pseudo-Range and LS Surface Function |
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| TU Rui ZHANG Qin HUANG Guanwen LING Qing.Establishment of Regional Ionospheric Delay Model in Xi'an Based on Phase Smoothing Pseudo-Range and LS Surface Function[J].Geomatics and Information Science of Wuhan University,2011(2):218-221. |
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| Authors: | TU Rui ZHANG Qin HUANG Guanwen LING Qing |
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| Institution: | TU Rui1 ZHANG Qin1 HUANG Guanwen1 LING Qing1(1 College of Geology Engineering and Geomatics,Chang'an University,126 Yanta Road,Xi'an 710054,China) |
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| Abstract: | With phase smoothing pseudo-range observed value,a regional ionospheric delay model is established by sequential least squares surface fitting with restrictive conditions.As a result,the average inner precision of the model is 6.9 cm,while the average outer precision is 8.8 cm.We also compare with the electron content calculated by global grid ionospheric delay model.Single frequency-PPP test of the two models have also done,the results show that the precision of regional ionospheric delay model is obviousl... |
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| Keywords: | phase smoothing pseudo-range ionospheric delay sequential least squares ionospheric delay model |
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