日本导航卫星的发展现状及其发展趋势

The developed procedures and developing trends of the Japanese navigation satellites

依据最新资料,介绍了日本导航卫星的发展历程,包括星基卫星增强系统(MSAS)发展历程、准天顶卫星系统(QZSS)的发展历程,阐述了QZSS的发展趋势,即QZSS将逐步为日本本土、亚太地区及全球提供亚米级增强服务(SLAS)、厘米级增强服务(SLAS)及早期预警服务(EWS)。QZSS这些高精度的服务,可以为我国完善北斗卫星导航系统(BDS)提供参考。

Based on the recent documents about the Japanese navigation satellites, the development histories of Japanese navigation satellites are introduced, including the development history of the Multi-functional Transport SATellite(MTSAT)Satellite-based Augmentation System(MSAS), the development history of Japanese Quasi-Zenith Satellite System(QZSS). And the development trend of QZSS is given, including Sub-meter Level Augmentation Service(SLAS),Centimeter Level Augmentation Service(CLAS) and the Early Warning Service(EWS) to be serviced in Japan, in the Asia-Pacific region and in the world. These specialized services of QZSS can be as as examples for perfecting the Chinese BeiDou navigation satellite System(BDS).