초록 ▼

DGPS data obtained from an FM broadcast wave is extracted by a DGPS data extraction section (226). Adjustment error, the accuracy of which is not very high, has been appended to correction data to be used in actual positioning correction within the obtained DGPS data. A correction value creation sec

DGPS data obtained from an FM broadcast wave is extracted by a DGPS data extraction section (226). Adjustment error, the accuracy of which is not very high, has been appended to correction data to be used in actual positioning correction within the obtained DGPS data. A correction value creation section (228) judges, from the contents of DGPS data, which data in a correction value table (230) may be read. The method of this judgment is predetermined. Then, the correction value is created by reading the corresponding correction value from correction value table (230). Next, the correction value and correction data are added in a DGPS data specifying section (232) to yield proper correction data. Position information having high accuracy can be obtained from the obtained proper correction data.

대표청구항 ▼

[ What is claimed is:] [1.] A positioning system comprising:a fixed station for generating DGPS data including correction data for satellite transmission information transmitted from artificial satellites and adjustment state identification information for indicating a state of adjustment error assi

[ What is claimed is:] [1.] A positioning system comprising:a fixed station for generating DGPS data including correction data for satellite transmission information transmitted from artificial satellites and adjustment state identification information for indicating a state of adjustment error assignment, said DGPS data being based on said artificial satellite transmission information and an absolute position that is known in advance, said correction data containing at least one of pseudorange correction data and range-rate correction data; anda mobile station for detecting its own position based on said artificial satellite transmission information and said DGPS data that is transmitted from said fixed station, whereinsaid fixed station assigns a predetermined adjustment error to said correction data and then transmits said DGPS data; andsaid mobile station corrects said correction data based on the received DGPS data.