摘要
目前,许多较大尺度的GPS网已投入应用。由于各个GPS接收站间基线较长、高度不同,使得一般的估计对流层折射改正模型限制了GPS定位精度的进一步提高。为此,提出了一种基于较大尺度GPS网的提高对流层折射改正精度的随机过程方法,同时也给出了采用最小二乘估计的实现方法,并分析了主要参数的影响和选择范围。
Currently, many GPS nets which have bigger dimension have already thrown in an application. Because the long baselines among GPS stations and the station＇s different heights, the general estimate of troposphere refraction correction models limit the further improvement of the precision in GPS location. Therefore, the paper gives a stochastic process method which can improve the precision of troposphere refraction correction models in GPS nets which have bigger dimension, also gives the method of least square estimate and analyzed the influence and the choosing scope of the main parameters.
出处
《全球定位系统》
2007年第6期11-13,共3页
Gnss World of China
关键词
GPS
对流层折射
随机过程
最小二乘估计
GPS
troposphere refraction
stochastic process
least square estimate
