Satellite-based positioning systems have been used in a broad array of fields including car navigation and land surveying, and have become indispensable to our lives.
The Quasi-Zenith Satellites System (QZSS) uses multiple satellites that have the same orbital period as geostationary satellites with some orbital inclinations (their orbits are known as “Quasi-Zenith Orbits”).
These satellites are placed in multiple orbital planes, so that one satellite always appears near the zenith above the region of Japan. The system makes it possible to provide high accuracy satellite positioning service covering close to 100% of Japan, including urban canyon and mountain terrain.
Through the development and deployment of this system, we aim to enhance Japan’s satellite positioning technology and contribute to building safe and secure society with enhanced satellite based positioning, navigation and timing technologies.