【作者】 关梅倩； 焦文海； 贾小林； 王省超； 彭腾；

【Author】 Guan Meiqian;Jiao Wenhai;Jia Xiaolin;Wang Shengchao;Peng Teng;School of Geology Engineering and Surveying, Chang’an University;Xian Research Institute of Surveying and Mapping;Beijing Institute of Tracking and Telecommunication Technology;

【机构】 长安大学地质工程与测绘学院； 西安测绘研究所； 北京跟踪与通信技术研究所；

【摘要】 目前已有多家科研机构及公司提出了低轨卫星(LEO)星座建设计划。低轨卫星轨道精度已达厘米级,利用低轨卫星增强导航卫星、联合测定卫星轨道等应用悄然兴起。基于此,文章设计了全球覆盖的Walker构型低轨卫星星座,分析了卫星数目、相位因子及轨道倾角对卫星星座构型的影响,论证了该星座增强BDS全球星座的可能性。计算结果表明,所设计W80/8/1星座可实现全球覆盖,在南北纬80°范围内,星座PDOP值在1~10之间。增加LEO星座后的BDS星座构型得到改进,最大PDOP值降低幅度为20%。更多还原

【Abstract】 Nowadays, many research institutions and companies have proposed plans for the construction of LEO satellite constellations. LEO satellite orbit accuracy has reached centimeter level, it’s attractive to use low earth orbit satellites to augment navigation satellites and determine navigation satellites orbits. Based on this, the global coverage of the Walker constellation consisted of LEO satellites is designed, the influence of satellite number, phase factor and orbital inclination on the constellation configuration is analyzed, and the possibility of augmenting the BDS constellation is demonstrated. The results show that the designed W80/8/1 constellation can achieve coverage in a global range. The PDOP value of the constellation is between 1 and 10 at 80 ° north and south latitudes and the BDS constellation configuration after adding LEO constellation is improved with the maximum PDOP value reducing by 20%.更多还原