正确使用GPS接收器,可以减少接收干扰。一般情况下都能接收到卫星讯号,但如果在停车场、高架桥路段,因为会被路桥遮住,所以会常收不到卫星直射的讯号;在树木密集、四面环山及隧道中,都会因被挡住而收不到卫星的讯号。在汽车内,应使用有长天线的GPS,并把天线用磁石置在汽车外,可别使用没有延长天线的型号哦。 Proper use of GPS receiver, can reduce the receiving interference. Under normal circumstances can receive satellite signals, but if in the parking lot, viaduct section, because it will be covered by road and bridge, it will often receive no direct satellite signal; in the dense trees, surrounded by mountains and tunnels, will be due to Was blocked and can not receive the satellite signal. In the car, you should use a GPS antenna with a long, and the antenna magnet placed in the car, do not use the model without extending the antenna Oh.