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ACQUIRING DEVICE, ACCESS CONTROL DEVICE, ACQUIRING METHOD, ACCESS CONTROL METHOD, PROGRAM AND RECORDING MEDIUM
ACQUIRING DEVICE, ACCESS CONTROL DEVICE, ACQUIRING METHOD, ACCESS CONTROL METHOD, PROGRAM AND RECORDING MEDIUM
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机译：采集设备，访问控制设备，采集方法，访问控制方法，程序和记录介质
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摘要
PROBLEM TO BE SOLVED: To determine the validity of a position detected by GPS.;SOLUTION: In this acquiring device, position information showing the position of a position detection device is acquired from the position detection device for detecting the position by the GPS. The position detection device has a distance measuring part for measuring the distance from the position detection device to each of a plurality of satellites, and a device position calculation part for calculating the device position which is the position of the position detection device based on the distance measured by the distance measuring part and the position of each of the plurality of satellites. The acquiring device is equipped with an acquiring part for acquiring from the position detection device the distance measured by the distance measuring part and the device position calculated by the device position calculation part, a position calculation part for verification for calculating the position for verification which is a position to be calculated by the device position calculation part based on the acquired distance and the position of each of the plurality of satellites at the point of measuring time of the distance, and a validity determination part for determining that the device position detected by the position detection device is valid when the device position agrees with the position for verification.;COPYRIGHT: (C)2006,JPO&NCIPI
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