The trajectory of the heavy blow is blurred.

The fuzzy trajectory of heavy blow is caused by GPS positioning error. At present, the accuracy of GPS positioning can only reach about 2- 10 meter. In the process of positioning, GPS is constantly correcting the positioning point. Even if you stand still in one place, if you record the trajectory, you can also record several anchor points several meters or even farther away. Therefore, all recorded tracks are basically jagged. The slower the moving speed, the more signal shielding around, and the more jagged the recorded tracks.