What factors will reduce the GPS signal?
1, GPS satellite signals must penetrate the entire atmosphere, attenuation is very powerful.
2, GPS satellite signals will not be able to penetrate all metal objects, resulting in no GPS signal
3, after the water will weaken the GPS signal, when the water thickness reaches 1 cm, it will completely block the GPS signal
4, too thick non-metallic objects can completely shield the GPS signal, such as the wall
5, dense trees can weaken the GPS signal
6, completely enclosed space can block GPS signals. Such as indoor, tunnels, underground parking, etc.
7, the impact of weather factors. Such as sunspots, bad weather may reduce GPS signals