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主要研究一种基于数字地球技术与图像识别技术的高空自主导航方法。该导航方法使用对地观测传感器对全球范围内3个不同区域的地表特征点进行观测并提取其WGS-84坐标,通过矢量导航算法完成飞行器高空自主定位定姿导航。仿真分析表明,本导航方法具有导航基线长、导航精度高、抗干扰能力强、误差不随时间累积等优点,为2 000~40 000 km高空自主导航问题探索了新的技术途径。
Mainly based on digital earth technology and image recognition technology of high-altitude autonomous navigation method. The navigation method uses the earth observation sensor to observe and extract the WGS-84 coordinates of the surface feature points in 3 different regions of the world and complete the autopositioning attitude and attitude navigation of the aircraft by the vector navigation algorithm. Simulation results show that the proposed navigation method has the advantages of long baseline navigation, high navigation precision, strong anti-jamming ability and no error accumulation over time, and explores new technical approaches for autonomous navigation at 2 000 ~ 40 000 km altitude.