Check the listing for details. UM980 Module RTK Module GNSS GPS Module for Drones Automobiles Surveying Mapping. Condition: New. Listed at 204.99 USD. UM980 Module RTK Module High-Precision GNSS GPS Module for Drones Automobiles Surveying Mapping Description:AK314-2 type adopts a full-system full-frequency RTK engine and a full-frequency RTK integrated module, which is an ultra-low-cost, low-power, high-performance RTK positioning module. The module's highly reliable carrier phase difference technology can provide real-time centimeter-level positioning accuracy for drones, automobiles, and surveying and mapping users.The module can be configured as a "mobile station" or a "base station" working mode, through the common view observation between "mobile station" and "base station", using carrier phase difference technology to eliminate ephemeris error, ionospheric error, troposphere error Errors, inter-satellite clock errors and other measurement errors, and finally obtain high-precision positioning results.When it is configured as a "base station" module, the differential interface outputs RTCM2.x/3.x standard data streams, which are compatible with most commercial mobile stations on the market. At the same time, it provides a reference design of network RTK, which can distribute differential data streams to all mobile stations through the network.When it is configured as a "mobile station" board, the differential interface supports RTCM2.x/3.x differential data format, which can be connected to the user's existing base stations of other brands or access to the national Beidou ground-based enhancement system.The static relative positioning accuracy of the module is