Reaching for the STARx
![](https://insidegnss.com/wp-content/uploads/2018/01/StarxEq.jpg)
GNSS modernization includes not only the global coverage capabilities of GPS, GLONASS, Galileo, and BeiDou, but also regional GNSS enhancement systems such as Japan’s Quasi-Zenith Satellite System (QZSS), the Indian Regional Navigation Satellite System (IRNSS), and the European Geostationary Navigation Overlay Service (EGNOS).
By Inside GNSS