As the main technology for outdoor autonomous positioning, GNSS can achieve sub-meter positioning accuracy such as decimeter and centimeter levels in real time using differential correction data and precise point positioning method, to directly locate the outdoor robots. It can also be combined with inertial navigation, vision, radar and other sensors to achieve high-precision positioning in various complex scenarios.

In combination with electronic map and path planning algorithm, GNSS can accurately locate and orient robots along the preset route. For single-antenna modules, GNSS can provide accurate position and movement direction when the robot is moving. For dual-antenna modules, GNSS can provide both the position and orientation even if the robot is standing still. UM980, UM982 and other positioning modules provided by Unicore support single-antenna and dual-antenna applications respectively, and have been successfully applied in various cases such as inspection, line painting, agricultural spraying and mowing. They are preferred for outdoor robotic positioning.