QZSS (Quasi-Zenith Satellite System)

The Quasi-Zenith Satellite System (QZSS) is a satellite system developed by Japan to enhance Global Navigation Satellite System (GNSS) services, particularly in urban areas where tall buildings can block signals. QZSS satellites are positioned in a unique orbit that keeps at least one satellite visible at all times, ensuring reliable positioning data. This system provides improved accuracy and availability for navigation applications, disaster response, and other services in Japan and surrounding regions. Essentially, it strengthens GPS capabilities, especially in challenging environments.