| 摘要 |
PROBLEM TO BE SOLVED: To precisely estimate ionosphere delay errors to correct them by properly utilizing various information about the ionosphere conditions. SOLUTION: The mobile location positioning device includes: a first ionosphere condition information reception means 70 for receiving the information about predicted ionosphere conditions to a future time point from the current time point; a second ionosphere condition information reception means 20 for receiving the information about the current ionosphere conditions; an ionosphere delay error estimation means 50 for estimating the ionosphere delay errors; and a positioning means 40 positioning the mobile location on the basis of a reception result of a radio wave from a satellite and the estimated ionosphere delay errors. The ionosphere delay error estimation means estimates the ionosphere delay errors by correcting the first ionosphere delay errors derived based on the first ionosphere condition information on the basis of the second ionosphere delay errors derived based on the second ionosphere condition information. COPYRIGHT: (C)2008,JPO&INPIT
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