摘要
系统精度估计是卫星导航系统总体设计的重要环节,是进行大系统指标分配的重要依据。因此,在进行卫星导航系统总体设计时,必须对所有误差源的特性及其对系统精度的影响情况进行仔细的仿真计算分析。采用对定位测量方程进行全微分的方法,导出了卫星导航系统定位精度的协方差估计公式,给出了用于指导工程实际对关键误差源进行严格控制的一整套理论和方法。
The estimation of system accuracy is an important part in designing the satellite navigation system and a major indicator in assigning the large-scale system as well. Thus, much attention should be paid to simulating, computing and analyzing characteristics of all the error sources and their influences on system accuracy in designing satellite navigation system. This paper induces the covariance estimating expression of system positioning accuracy by differentiating the measure equations and the set of theory and method for controlling the critical error sources, which apply to engineering, is provided.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2008年第1期25-27,共3页
Journal of National University of Defense Technology
关键词
卫星导航
误差源分析
定位精度
协方差分析
satellite navigation
error sources analysis
positioning accuracy
covariance analysis
