Patent ID: 9008061
Filing Date: 2015-04-14
Classification: G01S

Abstract:
1. A positioning device for measuring a position, the positioning device comprising: a WLAN positioning calculation unit configured to perform first positioning, based on radio waves from access points; a satellite positioning unit configured to perform second positioning, based on an assisted GPS (A-GPS) method; a positioning result determination unit configured to determine whether a positioning result by the WLAN positioning calculation unit exists within a predetermined range of position information; and a positioning result adoption determination unit configured to adopt the positioning result by the WLAN positioning calculation unit, when the positioning result determination unit determines that the positioning result by the WLAN positioning calculation unit is within the predetermined range of the position information, wherein the position information includes area information of a base station that is obtained by the assisted GPS-(A-GPS) method, and wherein, when the positioning result determination unit determines whether the positioning result by the WLAN positioning calculation unit exists within the predetermined range of the position information based on the area information of the base station, the first positioning by the WLAN positioning calculation unit and the second positioning by the satellite positioning unit are started in parallel, and , wherein, in the second positioning by the satellite positioning unit, the area information of the base station is obtained by the assisted GPS (A-GPS) method without performing satellite positioning.