| 摘要 |
PROBLEM TO BE SOLVED: To reduce an influence of an antenna gain and correctly specify the present position of a user.SOLUTION: When a first operation part 231 obtains provisional position information, an information processing device 1 uses an azimuth specification part 24 to specify the azimuth of a transmitter relative to the information processing device 1 on the basis of the obtained provisional position information. This prompts a correction part 26 to specify the azimuth of the transmitter viewed from the information processing device 1 on the basis of the obtained azimuth and the orientation thereof and to correct radio field strength on the basis of a correction value calculated from the specified azimuth and an antenna gain, thereby obtaining corrected radio field strength. And in the information processing device 1, a second operation part 232 obtains true position information on the basis of the corrected radio field strength and specifies the present position of a user. |
