Patent ID: 9715018
Date: 2017-07-25
CPC Classifications: G01R,G01S,H04B

Claim:
1. A Global Positioning System (GPS) On The Air (OTA) testing method, comprising: placing a terminal under test on a rotating table in a darkroom, and generating a GPS signal by a GPS satellite signal generator in the darkroom; rotating the rotating table to pass the terminal under test through each angle, and, at each of angles, switching a polarization direction of a testing antenna in the darkroom; acquiring a satellite signal strength at each of the angles and in each of polarization directions, and forming a signal strength direction map according to the satellite signal strength, wherein the angles include oblique angles and azimuth angles; searching for an optimal angle and an optimal polarization direction according to the signal strength direction map, acquiring a signal to noise ratio (SNR) value corresponding to the optimal angle and the optimal polarization direction, and acquiring a sensitivity corresponding to the optimal angle and the optimal polarization direction according to the SNR value; acquiring a sensitivity at each of the angles according to the sensitivity corresponding to the optimal angle and the optimal polarization direction and according to the signal strength direction map; and acquiring an antenna signal strength according to sensitivities corresponding to all the angles and the polarization directions; wherein the optimal angle and the optimal polarization direction are an angle and a direction, which give an optimal satellite signal strength in the signal strength direction map, from the angles and the polarization directions.