The A45 GNSS antenna is designed to support millimeter-level accuracy in land and marine applications. The A45 GNSS antenna supports current and future GNSS signals, including GPS, GLONASS, BeiDou and Galileo. The A45 is a multi-GNSS precision antenna and is ideal for various applications such as surveying, RTK positioning and navigation, precise steering and machine control. The A45 antenna can be used in difficult environments (e.g. near buildings and foliage) and is characterized by excellent multipath rejection, stable phase centering and high SNR values, even at low heights. The robust housing consists of an aluminum base that has been pre-treated for use in the sea and can withstand salt, fog and splash water. The antenna easily passes the drop test from a two-meter-high mast.