Benefiting from the special design of BeiDou Navigation Satellite System (BDS) constellation, its Geostationary Earth Orbit (GEO) satellites observations can provide favorable conditions to investigate the ionospheric plasma bubble at low latitudes. This study proposes using BDS GEO Rate of Total Electron Content Index observations to analyze the equatorial plasma bubble characteristics. We use GEO satellites instead of ground-based GNSS stations as a reference and compare the onset time of plasma bubbles observed by different GEO satellites, i.e., the reference GEO, the west and east GEO satellites, during geomagnetically quiet days, and determine plasma bubbles that are generated locally or drifted from elsewhere. According to this strategy, it is found that there is a significant difference in the occurrence rates of plasma bubbles generated locally over two closely located stations, i.e., LALX (18.19 °N, 104.98 °E; geomagnetic latitude: 11.31 °N) and YONG (16.83 °N, 112.34 °E; geomagnetic latitude: 9.96 °N) during the whole year of 2014. Statistical results indicate that during March and September equinoxes, the occurrence rates of plasma bubbles generated locally at the eastern station YONG are 52% and 34%, while at the western station LALX, they are only 34% and 25%. Further analysis reveals a close relationship between the higher bubble generation rates and the active atmospheric inter-tropical convergence zone.

受益于北斗卫星导航系统（BDS）星座的特殊设计，其地球静止轨道（GEO）卫星观测可以为研究低纬度电离层等离子体气泡提供有利条件。本研究建议使用 BDS GEO 总电子含量指数观测值来分析赤道等离子体气泡特征。我们使用 GEO 卫星代替地面 GNSS 站作为参考，比较了不同 GEO 卫星（即参考 GEO、西和东 GEO 卫星）在地磁安静的日子里观测到的等离子气泡的发生时间，并确定了等离子气泡本地产生或从其他地方漂流而来。按照这个策略，结果表明，LALX（18.19 °N，104.98 °E；地磁纬度：11.31 °N）和YONG（16.83 °N， 112.34 °E；地磁纬度：9.96 °N) 2014 年全年。统计结果表明，在 3 月和 9 月春分点，东站 YONG 局部产生的等离子体气泡发生率分别为 52% 和 34%，而在西站LALX，他们只有34%和25%。进一步的分析揭示了较高的气泡产生率与活跃的大气热带间辐合带之间的密切关系。96 °N) 在 2014 年全年。统计结果表明，在 3 月和 9 月的春分点，东站 YONG 局部产生的等离子气泡发生率分别为 52%和 34%，而在西站 LALX，它们是只有 34% 和 25%。进一步的分析揭示了较高的气泡产生率与活跃的大气热带间辐合带之间的密切关系。96 °N) 在 2014 年全年。统计结果表明，在 3 月和 9 月的春分点，东站 YONG 局部产生的等离子气泡发生率分别为 52%和 34%，而在西站 LALX，它们是只有 34% 和 25%。进一步的分析揭示了较高的气泡产生率与活跃的大气热带间辐合带之间的密切关系。