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针对仅有相对角度信息的空间交会问题,进行了基于可观测性分析的单测角相对导航与闭环制导技术研究。首先,建立了系统滤波模型,并从新视角对滤波系统进行了可观测性分析,得到了系统可观测的充分条件。然后,结合多脉冲滑移安全制导策略分析了单测角相对导航与制导的耦合关系,得到了耦合关系的数学表达,并利用耦合关系设计了相对导航与闭环制导方案。最后,通过Monte Carlo打靶仿真验证了该方案的有效性,并分析了不同传感器误差与初始状态误差水平下的导航与制导精度。
Aiming at the problem of space rendezvous with only relative angle information, a single goniometric relative navigation and closed-loop guidance technology based on observability analysis is studied. Firstly, the system filtering model is established and the observability of the filtering system is analyzed from a new perspective. The sufficient conditions for observing the system are obtained. Then, combined with the multi-pulse sliding safety guidance strategy, the coupling relation between relative navigation and guidance of single goniometry is analyzed. The mathematical expression of the coupling relation is obtained, and the relative navigation and closed-loop guidance schemes are designed based on the coupling relation. Finally, the effectiveness of this scheme is verified by Monte Carlo targeting simulation, and the navigation and guidance accuracy of different sensor errors and initial state error are analyzed.