摘要
针对露天矿区GPS几何图形条件与可见卫星个数易受地形影响、定位不佳的情况,利用GPS/伪卫星组合定位技术提高定位精度。阐述了GPS定位精度因子的概念,并进行了相关公式的推导。以某矿区接收的GPS信息为实验数据,利用Matlab仿真定量分析出加入伪卫星后对定位精度的影响;并提出以观测时间、高度角、方位角为自变量的三维选址优化模型,为伪卫星选址优化提供了直观的表达方法。
In order to improve positioning geometry strength and to increase the number of visible GPS satellites,Integration of GPS and pseudolites was used to improve the precision of positioning.The concept dilution of precision（DOP） was explained,and fundamental theories and corresponding formulas were illustrated.Based on the information of one mining area,the pseudolite’s effect on improving the precision of positioning is analyzed by Matlab,and build a three-dimensional model in term of independent variable of azimuth angel,elevation angel and observed epochs,in order to improve the efficiency of pseudolites locations.
出处
《全球定位系统》
2012年第4期19-21,26,共4页
Gnss World of China
基金
中国矿业大学大学生实践创新训练计划项目(编号:X1029011108)
