摘要
提出了一种快速计算几何精度因子(GDOP)的改进算法。该算法基于矩阵的QR分解,避免了由于传统算法在计算量和存储量较大导致定位解算实时性降低的问题;进一步分析了水平精度因子(HDOP)以及高程精度因子(VDOP)之间的关系,得出它们的数学表达式和新的计算方法。通过与传统方法比较,本文提出的改进算法在计算GDOP值时,数值稳定性更好、计算复杂度更低、计算效率更高。
In this paper, QR-factorization of matrix is used to conduct the research on geometric dilution of precision in the positioning solution, and a fast algorithm about geometric dilution of precision (GDOP) is proposed. This algorithm can effectively avoid the mass calculations and memories caused by calculating the inverse of matrix directly. The simulation results indicate that the values of GDOP calculated by the new algorithm are the same with common algorithms; but the new algorithm has better numerical s...
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2008年第S1期27-30,74,共5页
Journal of University of Electronic Science and Technology of China
基金
部级预研项目
