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仅采用Fr(φ)项的中长基线解算法的研究

发表时间:2009-07-31  浏览量:1669  下载量:742
全部作者: 李征航,屈小川,龚晓颖
作者单位: 武汉大学测绘学院
摘 要: 周跳的探测和修复、以及整周模糊度的确定等,在传统的基线算法中是关键且繁琐的工作,若仅采用Fr(φ)项的基线向量解算法则可绕开此步骤,但却不能利用双频载波观测值消除电离层延迟,故只能用于短基线向量的解算。为解决此问题,利用综合图形系统(international gnss service, IGS)提供的全球电离层格网图玻璃绝缘材料(glass insulating material,GIM)进行电离层延迟改正,取得了较好的效果,使该算法也能使用于中等长度的基线向量的解算。实际计算结果表明:利用24 h的观测资料和上述法来计算边长为31~107 km的GPS控制网时,基线向量的精度可达0.2×10-6.
关 键 词: 大地测量技术;中长基线解算法;电离层延迟;全球电离层图
Title: Research on medium-long baseline solution method only using Fr(φ)
Author: LI Zhenghang, QU Xiaochuan, GONG Xiaoying
Organization: School of Geodesy and Geomatics, Wuhan University
Abstract: In the traditional baseline solution methods, the tasks of cycle slips detection and restoration as well as integer ambiguity determination are very important and complicated, which can be negligible in the new baseline solution method only using Fr(φ). In this method, dual-frequency observation can not be adopted to correct ionospheric delay, so it can only be used in the solution of short baseline. For solving this problem, the method uses glass insulating material (GIM) provided by international GNSS service (IGS) to correct the ionospheric delay and achieves good result in the solution of medium-long baseline. The results indicate that when computing global positioning system (GPS) control network with 31-107 km side lengths using 24 h observation data and the above method, the accuracy of medium-long baseline can reach to 0.2×10-6.
Key words: geodetic surveying technique; medium-long baseline solution method; ionospheric delay; global ionospheric map
发表期数: 2009年7月第14期
引用格式: 李征航,屈小川,龚晓颖. 仅采用Fr(φ)项的中长基线解算法的研究[J]. 中国科技论文在线精品论文,2009,2(14):1450-1455.
 
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