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Research on Scheme and Algorithm of Autonomous Navigation Using Multi-sensor

Author: ZhangLiMin
Tutor: XiongZhi
School: Nanjing University of Aeronautics and Astronautics
Course: Detection Technology and Automation
Keywords: Autonomous navigation GPS Attitude sensors Integrated Navigation System Kalman filter
CLC: V448.2
Type: Master's thesis
Year: 2008
Downloads: 284
Quote: 1
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Abstract


The determination of the spacecraft orbit spacecraft guidance and control of the premise is a key technology. Along with the spacecraft increase in the number of constraints and geographical conditions, the use of ground stations for orbit determination drawbacks are increasingly exposed spacecraft become autonomous navigation the satellite autonomous monitoring and control of development direction. Programs for a variety of different configurations, on the basis of the configuration analyzed satellite navigation sensor, the autonomous navigation key technologies involved in the actual demand for near-earth orbit satellite navigation accuracy and reliability ; in a different configuration program on the basis of multi-sensor information fusion theory, integrated satellite may be configured navigation sensor information, and also designed the autonomous navigation scheme for multi-sensor satellite-based pseudorange and attitude sensors, in order to further improve the the accuracy and reliability of the satellite autonomous navigation. The paper carried out the kinetic modeling study of near-Earth orbit satellites, the kinetic equation modeling for near-earth orbit satellite satellite autonomous navigation achieve. In this paper, first the geocentric equatorial inertial coordinate system to analyze the shape of the earth, sun and moon gravity, sunlight pressure, atmospheric drag perturbation orbit, and on this basis, combined with a near-earth orbit satellite's orbit running characteristics of the near-Earth satellite orbit dynamics model. The paper combines the characteristics of satellite orbit dynamics, first consider using GPS pseudorange autonomous navigation, and analysis of the visibility of GPS satellites, observation model system; model based on the analysis of GPS errors, the Kalman filter design mathematical simulation analysis on satellite autonomous navigation performance. In addition, for the case of GPS is not only consider the use of satellite attitude sensor may be configured for autonomous navigation satellite, mainly for the star sensor / infrared horizon sensor or UV sensor two navigation program analysis research and analysis to establish under these two scenarios the autonomous navigation mathematical model, and finally through the digital simulation of a more in-depth research and explore autonomous navigation accuracy under both scenarios. Finally, the above-mentioned study, the use of multi-sensor information fusion theory to analyze \multi-sensor information fusion theory can improve the satellite autonomous navigation accuracy.

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CLC: > Aviation, aerospace > Aerospace ( Astronauts ) > Space instrument,spacecraft devices,spacecraft guidance and control > Guidance and Control > Spacecraft guidance and control
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