Locata/GPS组合动态定位仿真研究  

Simulation Study on Locata / GPS Integrated Kinematic Positioning

作　　者：张辉[1] 郝金明[1] 潘文超[1] 

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《测绘科学技术学报》2015年第2期130-134,共5页Journal of Geomatics Science and Technology

摘　　要：在可见卫星较少时,GPS难以保持稳定的定位精度。Locata能够建立地面工作网络进行定位,它与GPS的组合是一种很好的解决方案。文中提出了一种Locata/GPS组合动态定位算法,并利用仿真数据对Locata,GPS和Locata/GPS的定位精度和收敛时间进行了试验。模拟试验表明Locata/GPS的DOP值和定位精度均优于Locata和GPS单系统,且收敛时间明显缩短;在可见卫星较少时,Locata/GPS的定位精度相比于GPS单系统有明显提高。It is difficult to maintain a stable positioning accuracy for GPS if the number of available satellites is insufficient. Positioning can be accomplished by Locata based on terrestrial networks. The Locata / GPS approach is a good solution. An integrated kinematic positioning algorithm for Locata / GPS was presented. Based on simulation data, an experiment on positioning accuracy and convergence time of Locata, GPS and Locata / GPS was conducted. The trial results show that DOP value and positioning accuracy of Locata / GPS are better and the convergence time is substantially reduced. If available satellites are insufficient, the improvement of positioning accuracy of Locata / GPS is obvious.

关 键 词：Locata定位系统 全球定位系统 组合导航 动态定位 定位精度 

分 类 号：P228[天文地球—大地测量学与测量工程]