基于因子图的卫星拒止环境下的多信息融合技术  

Research on the Multi-source Information Fusion Technology in Satellite-jamming Environment Based on Factor Graph

作　　者：徐璟 杨功流[1] 孙艺丁 XU Jing;YANG Gong-liu;SUN Yi-ding(School of Instrumentation Science&Opto-electronics Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191)

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191

出　　处：《导航与控制》2019年第6期34-38,共5页Navigation and Control

摘　　要：目前,几乎所有军用和民用系统都依靠基于卫星的组合导航系统来获取导航定位信息。但卫星信号在都市、室内、地下等环境中容易受到干扰,使得导航结果精度降低。为了解决在卫星拒止环境下的导航定位问题,选用基于因子图的信息融合算法,来实现不同采集频率的导航数据信息的融合。实地跑车试验表明,该方法能在卫星信号失效情况下,实现多传感器信息快速有效融合,确保系统导航精度,提升卫星拒止环境下载体导航定位能力。Currently,almost all military and civilian systems rely on satellite-based integrated navigation system to obtain navigation and positioning information.However,the satellite signals are susceptible to interference in some environments,such as interior space,underground and tall buildings,which reduces accuracy of the navigation results.In order to solve the problem of low-precision navigation results in satellite-jamming environment,an information fusion algorithm based on the factor graph is proposed to realize the fusion of navigation data with different acquisition frequencies.The experiment shows that this method can realize fast and effective fusion of multi-sensor information when the satellite signals are unavailable,ensure the navigation accuracy of the system,and improve the navigation and positioning capability of the vehicles in satellite-jamming environment.

关 键 词：卫星拒止环境 导航定位 多信息融合 因子图 即插即用 

分 类 号：V474[航空宇航科学与技术—飞行器设计]