摘要
介绍了GPS/北斗组合单点定位的数学模型,采用IGG-Ⅲ方案对单/双系统单点定位进行定权,并将结果与等权处理结果作比较。分析表明,对于单系统而言,GPS/北斗组合可以显著增加可用卫星数,降低pDop值,提高定位精度;无论是单系统还是组合系统,使用选权迭代法均能在一定程度上改善定位精度,提高解算成功率,且对组合定位效果更佳。
The mathematic model of GPS/BeiDou combined single point positioning is introduced. The IGG-III scheme based selecting weight iteration method is applied to GPS,BeiDou and combined GPS/BeiDou single point positioning are used to get the receiver coordinates. Then the process results are compared with those without the use of selecting weight iteration.Results show that compared with single satellite system,GPS/BeiDou combined positioning can significantly increase satellite number,thus reducing pDop value and improving positioning accuracy. And,by selecting weight iteration method can improve the positioning accuracy and success rate by a certain degree regardless of single or combined system. At the same time it is more sensitive with the combined system.
出处
《测绘地理信息》
2014年第4期21-23,共3页
Journal of Geomatics
基金
国家自然科学基金资助项目(41204030)
作者简介
何俊，硕士生，现从事卫星导航定位方向的研究。E-mail：894265070@qq．com
