UFirebirdII is a 22nm dual-frequency multi-constellation GNSS SoC with low power consumption and miniature design developed Unicore ommunications, Inc. It integrates RF and baseband on a single chip, adopts multi-path mitigation technology, anti-jamming technology and high precision GNSS positioning technology, and can achieve sub-meter level accuracy. UFirebirdII supports GPS, GLONASS, BDS, Galileo, NAVIC and QZSS multi-constellation joint positioning, and also supports multiple SBAS signal processing, providing fast and accurate positioning service. It is suitable for vehicle navigation, robotic application, UAVs, wearables, handheld devices and walking navigation, with excellent performance especially in urban multi-path environment.