伪卫星优化GNSS星座DOP分析
首发时间:2011-08-19
摘要:针对伪卫星优化GNSS系统问题,详尽阐释了伪卫星的加入对星座系统DOP指标的影响,并进行了具体的公式推导。建立了DOP值关于方位角、高度角及时间历元的函数,阐释伪卫星优化GNSS系统的具体步骤并通过实测数据进行实验分析。实验表明:伪卫星的加入可有效解决因城市峡谷等特殊环境带来的可视卫星数量少及欠缺低高度角处信息的问题,有效提高系统定位精度,降低DOP值,并为寻找伪卫星最优位置布设提供途径。
For information in English, please click here
The Analysis of Optimizing GNSS Constellation Dop with Pseudolites
Abstract:Aiming at optimal construction of PLs in GNSS system,this paper points out the influence on GNSS constellation when pseudollites joined and elaborates the formula. Meanwhile, a function model was typically empolyed of which independent variables were azimuth angel, elevation angel and observed epochs, also, DOP values as dependent variable, respectively. And an extensive study was conducted with measured data, the result shows that: when pseudollites joined, the increasing number of visible satellites and the changing information of low-elevation satellites can enhance the system's reliability, improve positioning accuracy and reduce DOP value. It provides reliable basis for effectively solving the problem of locating PLs for GNSS/PLs optimization.
Keywords: DOP Pseudollite Optimizition GNSS Integrated Navigation
论文图表:
引用
No.****
同行评议
共计0人参与
勘误表
伪卫星优化GNSS星座DOP分析
评论
全部评论0/1000