Method of measuring vector magnetic flux by performing curved surface interpolation with data obtained by plural squid type vector magnetic flux meters, and apparatus for carrying out the same

A method for determining vector magnetic flux within a predetermined region based on data indicative of vector magnetic flux components, the components indicative data being obtained by plural vector magnetic flux meters disposed at predetermined relative positions within said region, each vector magnetic flux meter including a body which has plural faces crossing at predetermined angles to one another, and plural pickup coils each disposed on a corresponding one of the faces, each of the pickup coils corresponding to a SQUID flux meter whereby each vector magnetic flux meter has a corresponding plurality of SQUID flux meters, said method comprising the steps of:

• measuring vector magnetic flux, which includes magnetic flux components in plural directions, said step of measuring comprising collecting data indicative of the magnetic field flux components using the plural vector magnetic flux meters to obtain collected data, and holding the collected data,
• performing curved surface interpolation using the held data indicative of the measured magnetic flux components in each corresponding direction to provide curved surface interpolation data, and
• obtaining data indicative of vector magnetic flux at arbitrary points in said predetermined region by using the curved surface interpolation data, said predetermined region being a region wherein interpolation regions corresponding to all the magnetic flux components overlap.