摘要
GDOP是衡量导航系统精度的一个重要指标,但随着导航系统从单一向复合的发展,不同工作模式的系统被有机结合起来,形成了多种组合或耦合的系统,而这些系统的GDOP参数从定义到计算都变得异常复杂,限制了其进一步的应用。因此,本文从GDOP的数值计算出发,将GDOP计算转化成求解不同的线性方程,将组合不同的系统转化为计算中的约束条件,解决了不同系统组合的GDOP计算问题,拓展了GDOP理论,也为其广泛应用奠定了基础。
The GDOP is an important parameter in the navigation system. Yet, along with the development of navigation system from single mode to integrated modes, different systems were integrated into a composed mode system, which resulted in difficult definition and calculation of GDOP and restricted its applications. Based on numerical computation of GDOP, the paper converts the calculation into resolution of different linear equations. The different systems are considered as different restricted conditions. This new method successfully resolved the problem, which could improve the application of the GDOP.
出处
《空间科学学报》
CAS
CSCD
北大核心
2009年第5期540-544,共5页
Chinese Journal of Space Science
关键词
GDOP
导航系统
伪距
无线电
GDOP, Navigation system, Pseudo-distance wireless
