论文部分内容阅读
直接敏感地平的天文导航方法简单、可靠,其导航精度主要取决于地球敏感器精度,因此导航精度相对较低.间接敏感地平利用星敏感器观测折射星得到地平信息.但是由于折射星数量有限且观测时段较短,所以不能连续、长时间地提供观测信息.因此提出一种在直接敏感地平与间接敏感地平相结合自主导航方法基础上,分析当间接敏感地平观测不到折射星时,引入三轴磁强计观测信息作为新息,提出基于多敏感器信息融合的自主导航原理及滤波算法,通过对三种导航方法进行数值仿真及其结果的分析和比较,论证所没计方法既提高了系统的导航精度和鲁棒性,又有利于工程实际应用.
The direct and sensitive horizon method of astronomical navigation is simple and reliable, its navigation precision mainly depends on the accuracy of the earth sensor, so the navigation accuracy is relatively low. The indirect sensitive horizon uses the star sensor to observe the refraction star to obtain the horizon information. However, due to the limited number of refractive stars So the observation information can not be provided continuously and for a long time.Therefore, a method of autonomous navigation based on direct sensitive horizon and indirect sensitive horizon is proposed, and when the indirect sensitive horizon can not be observed, Axis magnetometer observation information as a new interest, proposed autonomous navigation principle and filtering algorithm based on multi-sensor information fusion, through the numerical simulation of the three navigation methods and the analysis and comparison of the results, System navigation accuracy and robustness, but also conducive to the practical application of the project.