I’m currently developing a rover that can take light level measurement at a grid of waypoints on the sports field, but the rover always fails to reach waypoints accurately. Generally it has around 2 meters error. The GPS/compass I’m using is Ublox M8N. I also tried to blend two GPS but still cannot make much difference. So is there any way to improve the accuracy of GPS navigation for waypoints ? Should I purchase a better GPS hardware ? Thank you so much