空天飞行器多源容错鲁棒组合导航系统设计

空天飞行器具有机动灵活、高速飞行和实时打击等特点，为保证空天飞行器在各种复杂飞行工况下导航系统的精度、可靠性与鲁棒性，构建了包含惯性导航、卫星导航与天文导航的多源容错鲁棒组合导航系统。针对空间复杂电磁环境造成的在非线性系统中量测噪声非高斯分布的问题，设计了一种基于Huber定则的鲁棒多传感器信息融合方法；针对高动态与GNSS信号受干扰及欺骗等情况下，卫导信号异常、失锁与星图拖尾等问题，设计了故障诊断与滤波器重构策略。仿真结果表明，所设计的多源容错鲁棒组合导航系统在复杂动态环境下能够有效提高导航系统的精度与容错能力，为空天飞行器导航系统设计提供了有效参考。

Design of Multi-Source Fault-Tolerant Robust Integrated Navigation System for Aerospace Vehicle

Aerospace vehicles have the characteristics of mobility, high speed and real-time attack. In order to ensure the accuracy, reliability and robustness of the navigation system of the aerospace vehicle under various complex flight conditions, a multi-source fault-tolerant robust integrated navigation system including inertial navigation, GNSS and celestial navigation is constructed. A robust multi-sensor information fusion method based on the Huber rule is designed to solve the problem of non-Gaussian measurement noise in nonlinear systems caused by the complex electromagnetic environment in space; The fault diagnosis and isolation strategy are designed for the high dynamic GNSS signal is disturbed, deceived, receiver lost lock and star map is motion-blurred. The simulation results show that the multi-source fault-tolerant robust integrated navigation system can effectively improve the navigation system under complex conditions, and provide an effective reference for the design of the navigation system of aerospace vehicles.