In open terrain, the typical positioning accuracy of GPS is approximately 10 meters, with some high-performance modules achieving accuracy of less than 3 meters. Key parameters include an acquisition sensitivity of -148 dBm, a tracking sensitivity of -166 dBm, a velocity accuracy of less than 0.1 meters per second, and a time accuracy of less than 60 seconds.
The initial positioning time varies depending on the startup mode: a warm start takes approximately 2 seconds, a mild start approximately 15 seconds, and a cold start approximately 38 seconds. Some modules achieve an initial positioning time of less than 28 seconds for a cold start, 1 second for a warm start, and 1 second for reacquisition.
This function supports positioning via multiple satellite systems, including BDS, GPS, GLONASS, and Galileo, enabling four-mode positioning (selecting three out of four). It also supports single-mode, dual-mode, and multi-mode operation, which can be switched via commands. Furthermore, some modules support A-GNSS assisted positioning.