| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for accurately obtaining receiver bias for each positioning satellite receiver by a simple means with a small operation quantity and within a short time. SOLUTION: In a method comprising the steps of: receiving two carrier waves having different frequencies from a positioning satellite by a positioning satellite receiver; and estimating ionospheric total electron content using both carrier wave phases and a pseudodistance between the positioning satellite and the positioning satellite receiver, when converting an ionospheric slant total electron content(STEC) measured by the positioning satellite receiver into ionospheric vertical total electron content(VTEC), a previously measured or obtained satellite code bias for the positioning satellite is used, and the ionosheric slant total electron content(STEC) measured by the positioning satellite receiver and an elevation angle at which the positioning satellite is looked up at from the positioning satellite receiver are used to obtain a positioning satellite receiver bias using a given relational expression.
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