This antenna is specially designed for high-precision GPS satellite positioning measurement requirements. It adopts stable symmetrical multi-feed technology, with stable phase center and small error. It has efficient multi-path suppression function, pre-filtering technology, and built-in high-gain amplifier with excellent performance. It can receive GPS/BD/GLON ASS/Galileo multi-frequency signals, with low signal transmission delay, and is suitable for various strong vibration and shock environments and complex electromagnetic environments. Application areas: geodetic surveying, waterway surveying, ocean surveying, road construction, dock containers and other places.