How to install GPS antenna

The study found, GPS antenna signal strength and the installation location has great relationship, if installed in the upper front windshield rearview mirror position, or installed in the A-pillar, because the GPS antenna installation is directional, so the above most install signal reception is not very good (must be received four or more stable satellite signals to work), navigation slow start. GPS antenna should face toward the sky to receive direction (that is, facing a black plastic case, the signal receiving face of the sky, no metal shelter face a certain angle sector antenna with the word that side should face down, the top of the antenna to be no metal objects blocking ), through many experiments, finally found the GPS antenna is mounted on the upper plate below the control, not only hidden, but the effect is very good, fast satellite search, the general situation in the next minute you can not start properly, test the fastest once even 25 seconds to start, and increased the number of Star Search (generally found seven more satellites), so more accurate positioning.