采用多信息源的超紧组合导航系统性能分析  

Performance Analysis of Ultra-tightly Integrated INS/GPS/BDS

作　　者：陈坡[1,2] 孙付平[1] 李海峰[1] 郝万亮[1] 

机构地区：[1]信息工程大学导航与空天目标工程学院 [2]96251部队

出　　处：《导航定位学报》2013年第4期17-20,共4页Journal of Navigation and Positioning

摘　　要：INS/GPS超紧组合导航系统是利用惯性导航系统导航参数辅助全球定位系统卫星信号的捕获和跟踪,满足了低信噪比和高动态环境下的导航精度要求。随着北斗卫星导航系统的发展,将北斗系统构建新的超紧组合导航系统并对新系统进行相关研究具有重要的意义。分析了新系统的关键技术,建立了新系统的滤波器模型,基于软件接收机对新型超紧组合导航系统性能进行仿真分析。结果表明,新系统在导航精度上与INS/GPS超紧组合系统性能相当,但是可以提高系统的可用性。Ultra-tight INS and GPS integration meets the navigation accuracy requirement under low signal-to-noise ratio and high dynamic situations by using parameters of INS to aid GPS signal acquisition and carrier tracking.With the develop- ment of BDS,It's important to do the research on ultra-tight INS/GPS/BDS integration.Herein,the decisive technologies in INS/GPS/BDS were investigated and a navigation filter algorithm was designed.The entire performance was simulated on a software receiver.Simulation result shows that the navigation accuracy of new system is similar to the ultra-tight INS and GPS integration,however,the availability of it is better.

关 键 词：超紧组合 软件接收机 北斗卫星导航系统 仿真分析 

分 类 号：P228.1[天文地球—大地测量学与测量工程]