日本QZSS导航系统属于区域导航系统。

Overview of the Quasi-Zenith Satellite System (QZSS)

QZSS is a Japanese satellite positioning system composed mainly of satellites in quasi-zenith orbits (QZO). However, the term “Quasi-Zenith Satellite (QZS)” can refer to both satellites in QZO and geostationary orbits (GEO). For that reason, the name “QZO satellite” is used when it is necessary to specifically refer to satellites in QZO.

Satellite positioning systems use satellite signals to calculate position information. One famous example is the American Global Positioning System (GPS); the QZSS is sometimes called the “Japanese GPS.”

对于QZSS感兴趣，想学习相关知识的，可参考下面网址

http://qzss.go.jp/en/overview/downloads/index.html