| 摘要: |
| 全球导航卫星系统（GNSS）对空间用户的应用价值在于GNSS信号对空间的覆盖性能，这不仅取决于星载信号发射器的信号辐射角范围，而且取决于用户自身的最小观测角。针对该问题，对GNSS空间覆盖性原理进行了分析，给出了判别依据，然后对GPS、GLONASS、GALILEO系统、北斗区域服务系统、“北斗”全球导航系统及“北斗”与其他GNSS组合共8种仿真方案，不同轨道高度用户的空间覆盖性进行了仿真。在实际应用中，可以根据仿真结果针对不同的应用任务选取不同的卫星星座或选取多星座互操作，以保证最大同时可见卫星数，从而更好地提升GNSS卫星星座的应用价值。 |
| 关键词: 全球导航卫星系统 “北斗”系统 空间覆盖 可见星 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（61502257） |
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| Simulation analysis of GNSS space coverage performance |
| ZHANG Pengfei,CHANG Jianlong,HU Chunsheng |
| (College of Mechatronic Engineering,North University of China,Taiyuan 030051,China;College of Mechanical Engineering,Ningxia University,Yinchuan 750021,China) |
| Abstract: |
| For space users,the application value of Global Navigation Satellite System(GNSS) depends on the Space Coverage Performance(SCP) of GNSS constellations.These performances are influenced by restriction of both the signal’s beam angle and the mask angle of receivers.This paper analyzes the theory of SCP of GNSS and derives the judgment method.In addition,eight programs including GPS,GLONASS,GALILEO system,Beidou regional service system,Beidou global navigation system(BDS) and their combination with other GNSSs are simulated and analyzed.In practical application,relevant constellations should be selected according to different tasks to ensure the maximum number of visible satellites at the same time. |
| Key words: global navigation satellite system(GNSS) Beidou system(BDS) space coverage visible satellites |
