| 典型低轨卫星星座导航增强性能对比性评估研究 |
| |
| 引用本文： | 江旭东,陈潇,马满帅,王莹,梁任腾,杨子佳.典型低轨卫星星座导航增强性能对比性评估研究[J].全球定位系统,2021,46(2):49-55. |
| |
| 作者姓名： | 江旭东 陈潇 马满帅 王莹 梁任腾 杨子佳 |
| |
| 作者单位： | 1.中国科学院空天信息创新研究院，北京，100094 |
| |
| 摘 要： | 选取国外的Iridium NEXT系统、国内的“鸿雁”星座和“微厘空间”共三个典型低轨星座对北斗卫星导航系统(BDS)从信号落地功率、可见卫星数和精度衰减因子(DOP)等方面进行导航增强分析.结果表明:由于星座结构和卫星数目的不同，低轨星座对导航系统的增强能力存在差异. Iridium NEXT系统和“鸿雁”星座等极轨星座对极地地区有较强的导航增强能力，但随着纬度的降低增强能力下降明显，而以倾斜轨道为主的“微厘空间”在中低纬度的导航增强能力更强.
|
| 关 键 词： | 低轨星座 导航增强 可见卫星数 精度衰减因子(DOP) 信号自由空间传输损耗 |
| 收稿时间： | 2020-11-12 |
Comparative evaluation of navigation enhancement performance of typical LEO satellite systems |
| |
| Affiliation: | 1.Aerospace Information Research Institute, Chinese Academy of Science, Beijing 10094, China2.School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China3.Beijing Information Science and Technology University, Beijing 100192, China |
| |
| Abstract: | In this paper, three typical low earth out satellite constellations which are Iridium NEXT system abroad, "Hongyan" constellation and "CentiSpace" of China, were selected to analyze the navigation enhancement of Beidou navigation satellite system (BDS) from the aspects of signal free space transmission loss, number of visible satellites and dilution of precision. The results show that the enhancement ability of LEO constellations to navigation system are different due to different constellation structure and number of satellites. As polar orbit constellations, Iridium NEXT system and "Hongyan" constellation have strong navigation enhancement ability in polar regions, but with the decrease of latitude, the enhancement ability decreases obviously. While the "CentiSpace" with inclined orbit as the main part has stronger navigation enhancement ability in middle and low latitudes. |
| |
| Keywords: | |
|
| 点击此处可从《全球定位系统》浏览原始摘要信息 |
|
点击此处可从《全球定位系统》下载全文 |
|
