基于加权奇偶矢量的机载自主完好性监测算法  

Aircraft autonomous integrity monitoring algorithm based on weighted parity vector

作　　者：柳敏[1] 赖际舟[1] 黄凯 刘建业[1] 王玮[1] 

机构地区：[1]南京航空航天大学导航研究中心,南京210016 [2]陕西宝成航空仪表有限责任公司,宝鸡721006

出　　处：《中国惯性技术学报》2015年第1期43-48,共6页Journal of Chinese Inertial Technology

基　　金：国家自然科学基金项目(61174197);航空科学基金项目(2012ZC52045);江苏省"青蓝工程"项目

摘　　要：针对接收机自主完好性监测在卫星数少或多星同时发生故障下无法保证可用性的问题,结合实际机载多传感器配置,提出了一种基于陆基导航系统辅助的加权奇偶矢量机载自主完好性监测方法,利用陆基导航系统的斜距及卫星伪距观测信息建立联合监测系统的观测方程,并采用加权奇偶矢量法构建检验统计量实现对故障卫星的检测判别。仿真结果表明,该方法能及时准确地识别故障卫星,从而保证卫星导航系统的完好性及组合导航定位精度,具有重大的工程应用参考价值。In view that the receiver autonomous integrity monitoring is not available when there are not enough visible satellites or many satellites simultaneously malfunction, an airborne autonomous integrity monitoring method is presented which is based on weighted parity vector and aided by land-based navigation system. The observation equation of the monitoring system is established by using slope range of the land-based navigation system and the observations of GPS pseudorange. Test statistics is constructed to diagnose fault satellites by the weighted parity vector method. Simulation results show that this method can accurately identify fault satellites in time, and thus ensure the integrity of satellite navigation system and the positioning accuracy of the integrated navigation, showing that it has great reference value for engineering applications. ©, 2015, Editorial Department of Journal of Chinese Inertial Technology. All right reserved.

关 键 词：完好性 组合导航 陆基导航系统 卫星导航系统 加权奇偶矢量 故障检测 

分 类 号：V249.3[航空宇航科学与技术—飞行器设计]