| 摘要 |
PROBLEM TO BE SOLVED: To provide a positioning system capable of calculating accurately a differential reinforcement information and its error, and thereby improving positioning accuracy of a moving body. SOLUTION: When calculating the sum of a troposphere delay amount and an ionosphere delay amount of each satellite 11-1k, independent positioning by a least-squares method in consideration of a weight is performed by each satellite signal receiver 211-21n. A range of, for example 95%, is determined in each satellite signal receiver 211-21n based on the value, and only data mutually overlapped in receivers are adopted as effective data. The average of each sum of the troposphere delay amount and the ionosphere delay amount is determined relative to data of effective satellite signal receivers of some satellite, and a deviation amount of the sum of the troposphere delay amount and the ionosphere delay amount of some satellite from the average is calculated relative to each satellite signal receiver 211-21n. The deviation from the average is used as error information of each satellite signal receiver 211-21n. COPYRIGHT: (C)2007,JPO&INPIT
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