LEO AUTONOMOUS NAVIGATION BASED ON IMAGE MOTION |
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作者姓名: | DUANFang LIUJian-ye YUFeng |
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作者单位: | CollegeofAutomationEngineering,NUAA,29YudaoSteet,Nanjing,210016,P.R.China |
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摘 要: | A method of LEO autonomous navigation is presented based on the nonlinear satellite velocity relative to the earth. The velocity is detected by a high-speed camera, with the attitude information detected by a star sensor. Compared with traditional autonomous navigation by landmark identification, the satellite velocity relarive to the earth is obtained by correlativity analysis of images. It does not need to recognize ground objects or views. Since it is not necessary to pre-store the database of ground marks, lots of memory space can be saved.The state and observation equations are constructed, and the filtering is processed by the Kalman filter. Simulation results show that the system has high autonomous navigation precision in LEO autonomous navigation.
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关 键 词: | 图像运动 自动导航 卡尔曼滤波 LEO 星际传感器 |
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