QZSS

QZSS, which stands for Quasi-Zenith Satellite System, is a satellite-based augmentation system (SBAS) developed and operated by Japan. It is designed to enhance the accuracy, availability, and reliability of satellite navigation services, particularly in the Asia-Oceania region.

The QZSS constellation includes multiple satellites in geosynchronous orbits, with some positioned in quasi-zenith orbits (QZO) to optimize coverage and improve signal reception in challenging environments such as urban canyons or mountainous areas.

QZSS works in conjunction with other global navigation satellite systems (GNSS) like GPS, GLONASS, GALILEO, and BDS, providing additional satellite signals and correction data to improve the accuracy of positioning, navigation, and timing information.

The primary objectives of QZSS are to support various applications, including transportation, disaster management, agriculture, telecommunications, and location-based services. By leveraging QZSS signals, users can achieve more precise and reliable navigation capabilities, benefiting from enhanced positioning accuracy and coverage in the Asia-Pacific region.