Galileo改正电离层折射误差高阶项的方法  

Galileo methods of high-order ionospheric refraction correction

作　　者：刘庆元[1] 王虎[1] 王潜心[1] 包海[1] 张长书[1] 

机构地区：[1]中南大学信息物理工程学院,湖南长沙410083

出　　处：《测绘工程》2008年第2期9-12,共4页Engineering of Surveying and Mapping

摘　　要：在研究电离层折射对Galileo测量的影响及电离层折射误差模型的基础上,针对Galileo系统中的4个频率,提出运用四频观测值将电离层折射误差改正至三阶项的方法,并推导了四频载波相位观测值无电离层折射组合方程,从而进一步提高了Galileo的定位精度。This paper investigates theoretical models of the ionospheric refractive error. Because four-frequency are included in the Galileo system,new possibilities for the refinement of ionospheric modeling and reduction of the ionospheric error in Galileo measurements appear. A four-frequency method of correcting the third ionospheric refraction is presented and a four-frequency ionosphere-free combination method is proposed for the Galileo system. It is anticipated that the proposed refraction correction methods will play role in the Galileo system.

关 键 词：GALILEO 电离层折射误差 无电离层折射组合 

分 类 号：P228.1[天文地球—大地测量学与测量工程]