星间链路构型对自主导航精度的影响分析
发布时间：2019-01-05 08:32
【摘要】：以北斗仿真星座为对象,探讨UHF波段与Ka波段的不同星间链路建链条件下GEO、IGSO及MEO卫星的可见链路数及PDOP值的变化。此外,还针对不同星间链路构型方案,分别采用其对应仿真观测数据进行60d自主导航解算,通过对解算结果精度的分析,探讨星间链路测距模式及星间链路构型对自主导航的影响。结果显示,星间链路测距模式对自主导航精度无影响,而星间链路构型则对自主导航精度存在cm量级的影响。在星间链路设计过程中应综合考虑导航精度、链路负荷及建设成本等因素,以达到最优效果。
[Abstract]:Taking Beidou simulation constellation as an object, the changes of visible link number and PDOP value of GEO,IGSO and MEO satellites under different inter-satellite link construction conditions of UHF band and Ka band are discussed. In addition, according to different inter-satellite link configuration schemes, the corresponding simulation observation data are used for 60 d autonomous navigation solution, and the accuracy of the solution results is analyzed. The influence of ranging mode and intersatellite link configuration on autonomous navigation is discussed. The results show that the ranging mode of intersatellite link has no effect on autonomous navigation accuracy, while the configuration of intersatellite link has a cm effect on autonomous navigation accuracy. In the process of intersatellite link design, factors such as navigation accuracy, link load and construction cost should be taken into account in order to achieve the optimal results.
【作者单位】： 西南交通大学地球科学与环境工程学院;
【基金】：国家自然科学基金(41504021,41374032) 国家重点研发计划(2016YFB0501900) 中央高校基本科研业务费(2682016CX086)~~
【分类号】：P228;TN967.1
本文编号：2401524
[Abstract]:Taking Beidou simulation constellation as an object, the changes of visible link number and PDOP value of GEO,IGSO and MEO satellites under different inter-satellite link construction conditions of UHF band and Ka band are discussed. In addition, according to different inter-satellite link configuration schemes, the corresponding simulation observation data are used for 60 d autonomous navigation solution, and the accuracy of the solution results is analyzed. The influence of ranging mode and intersatellite link configuration on autonomous navigation is discussed. The results show that the ranging mode of intersatellite link has no effect on autonomous navigation accuracy, while the configuration of intersatellite link has a cm effect on autonomous navigation accuracy. In the process of intersatellite link design, factors such as navigation accuracy, link load and construction cost should be taken into account in order to achieve the optimal results.
【作者单位】： 西南交通大学地球科学与环境工程学院;
【基金】：国家自然科学基金(41504021,41374032) 国家重点研发计划(2016YFB0501900) 中央高校基本科研业务费(2682016CX086)~~
【分类号】：P228;TN967.1
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