| 利用三频GNSS进行长距离实时精密导航 |
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| 引用本文： | 李博峰, 沈云中, 冯延明. 利用三频GNSS进行长距离实时精密导航[J]. 武汉大学学报 ( 信息科学版), 2009, 34(7): 782-786. |
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| 作者姓名： | 李博峰 沈云中 冯延明 |
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| 作者单位： | 1同济大学测量与国土信息工程系,上海市四平路1239号200092;2现代工程测量国家测绘局重点实验室,上海市四平路1239号,200092;3澳大利亚昆士兰理工大学信息技术系,昆士兰4001 |
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| 基金项目： | 国家自然科学基金资助项目(40674003,40874016)；现代工程测量国家测绘局重点实验室开放研究基金资助项目(TJES0809) |
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| 摘 要： | 针对三频全球导航卫星系统(GNSS)可构成多组模糊度极易固定的超宽巷组合这一最显著的优点,提出了一种利用三频GNSS进行长距离实时精密导航的算法。采用约90 km的基线实验结果表明,对两个超宽巷求解的电离层延迟经过2 min平滑,精度可达到1.5 cm;对电离层改正后的宽巷组合经过1 min平滑,平面定位精度优于3 cm。这意味着采用三频GNSS在我国中等城市只需要一个参考站即可实现精密导航和基本测绘服务。
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| 关 键 词： | 全球导航卫星系统 三频模糊度解 精密导航 电离层延迟 平滑 |
| 收稿时间： | 2009-05-12 |
| 修稿时间： | 2009-05-12 |
Long-Range Real-Time Precise Navigation with Three Frequency GNSS |
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| LI Bofeng, SHEN Yunzhong, FENG Yanming. Long-Range Real-Time Precise Navigation with Three Frequency GNSS[J]. Geomatics and Information Science of Wuhan University, 2009, 34(7): 782-786. |
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| Authors: | LI Bofeng SHEN Yunzhong FENG Yanming |
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| Affiliation: | 1 Deptartment of Surveying and Geo-informatics Engineering,Tongji University,1239 Siping Road,Shanghai 200092,China;2 Key Laboratory of Advanced Surveying Engineering of SBSM,1239 Siping Road,Shanghai 200092,China;3 Faculty of Information Technology,Queensland University of Technology,QLD 4001,Australia |
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| Abstract: | The most valuable benefits from three frequency GNSS are that several extra-widelane(EWL) combinations can be constructed.A new method for long-range real-time precise navigation is proposed according to this.The position experiment with employment of about 90 km baseline demonstrates that 1.5 cm RMS accuracy can be achieved for ionosphere delays after 2 min smoothing and 3 cm for horizontal coordinates is achieved after 1 min smoothing,which means that the precise navigation can be set up with only one reference station by using three frequency GNSS in the medium scale cities in China. |
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| Keywords: | GNSS three carrier ambiguity resolution precise navigation ionospheric delay smoothing |
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