摘要
Abstract
Some main issues of combined GPS/BD single point positioning are discussed in this paper. Through processing the observed data, we analyzed the impact of Helmert method of variance component estimation on positioning accuracy. It is found that, compared with using equal weight matrix, combined single point positioning based on variance component estimation can increase the precision in east and up directions, but decrease the precision in north direction.关键词
全球定位系统/北斗卫星定位系统/组合定位/方差分量估计Key words
GPS/BD/combined positioning/variance component estimation分类
天文与地球科学
