基于近距无线电导航的容错组合导航系统  

Application of Short-range Radio Navigation for Fault-tolerant Integrated Navigation System

作　　者：岳亚洲[1] 高关根[1] 党进[1] 张礼礼[1] 

机构地区：[1]飞行自动控制研究所,陕西西安710065

出　　处：《计算机测量与控制》2009年第9期1786-1789,共4页Computer Measurement &Control

基　　金：航空科学基金(20080818006);中国博士后科学基金(20070421136)资助

摘　　要：针对组合导航子系统的特性，提出了一种基于近距无线电导航的容错组合导航系统方案。给出了完整的无线电导航系统的误差模型。针对残差χ^2检验和状态χ^2检验的特点，提出了一种结合状态递推的残差检验法，该方法对软故障的检测能力较强，并采用分量检测法提高故障检测灵敏度，将该算法嵌入到基于局部反馈校正的无重置联邦滤波器中提高导航系统的容错能力。仿真结果表明，融合输出结果不受故障影响且精度高于任一子滤波器导航精度，验证了算法的正确性。According to the features of the integrated navigation system, a fault--tolerant integrated navigation system program based on the short--range radio navigation is proposed. The error model of the radio navigation system is given, according to the feature of State Chi Square Test and residual State Chi-Square Test, a combination of state recurrence of residual test is adopted. The method can detect the soft fault effectively. The component detection method is adopted to improve fault detection sensitivity. The algorithm is embedded in the local feedback correction based on the federal Kalman filter to improve the navigation system fault tolerance. The simulation shows that the integrated solution is not affected by the fault; besides, more accurate than any of sub--filter outputs. The effectiveness of the algorithm is verified.

关 键 词：无线电导航 容错组合导航 故障检测 联邦卡尔曼滤波 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]