北斗系统载波相位平滑伪距研究  

Research on carrier phase smoothed pseudo-range of compass

作　　者：刘瑞华[1] 杨兆宁[2] 詹先龙[2] 

机构地区：[1]中国民航大学电子信息工程学院,天津300300 [2]中国民航大学航空自动化学院,天津300300

出　　处：《中国民航大学学报》2012年第3期28-31,共4页Journal of Civil Aviation University of China

基　　金：中央高校基本科研项目(ZXH2010B004)

摘　　要：首先阐述了单频载波相位平滑伪距的基本原理,然后在北斗系统星座环境下,对载波相位平滑前后北斗的伪距差分定位误差进行了仿真对比。结果表明,采用载波相位对码伪距进行平滑,明显改善了伪距定位的精度,较好地消除了接收机测量噪声和多路径等误差影响,使得伪距定位解的精度更加稳定和精确。The Hatch-type filter formula of the single frequency carrier phase smoothing pseudo-range is given first in this paper.Then,the simulation of the carrier phase smoothing pseudo-range is implemented under the BD-2 constellation.The conclusion shows that smoothing the pseudo-range using carrier phase significantly improved positioning accuracy and eliminated the measurement noise of the receiver and multipath effects.The accuracy of pseudo-range positioning is more stable and accurate.

关 键 词：北斗系统 相位平滑伪距 定位精度 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]