| 摘要 |
PROBLEM TO BE SOLVED: To provide a present position obtaining device which can reduce occurrence of a state where present position information can not be obtained and can obtain more accurate present position information. SOLUTION: This device is provided with a base position information storage part 7 for storing positional information of a PHS base station, an identification code sampling means 5 for sampling a base station identification code from a signal received from the closest base station, a base position searching means 4 for searching base positional information corresponding to a sampled identification code from the base position information storage part 7, a present position obtaining means 6 for obtaining present positional information by GPS, and a position comparing means for comparing a first present positional information obtained by searching the base positional information by the base position searching means 4 with a second present positional information obtained by the present position obtaining means 6. And when only one of the above two pieces of present positional information can be obtained, the obtainable information is obtained, and if both can be obtained and a difference between the both is larger than a prescribed value, the first present positional information is obtained. |
