PROBLEM TO BE SOLVED: To provide a magnetic field measurement device capable of accurately calculating a magnetic field of a measurement object by considering a direction of a detection axis of a magnetometric sensor.SOLUTION: A magnetic field measurement device includes: a plurality of magnetometric sensors； a calibration part that estimates a magnetic field based on detection vectors of the plurality of magnetometric sensors, position information of the magnetometric sensors and measured values of the magnetometric sensors, and updates the detection vectors based on the estimated magnetic field； and a magnetic field calculation part calculating the magnetic field of a measurement object based on the measured values of the magnetometric sensors and the detection vectors updated by the calibration part.SELECTED DRAWING: Figure 4【課題】磁気センサーの検出軸の方向を考慮して計測対象の磁場を精度良く計算することが可能な磁場計測装置を提供すること。【解決手段】複数の磁気センサーと、前記磁気センサーの検出ベクトルと前記磁気センサーの位置情報と前記磁気センサーの計測値とに基づいて磁場を推定し、推定した前記磁場に基づいて前記検出ベクトルを更新する校正部と、前記磁気センサーの計測値と前記校正部により更新された前記検出ベクトルとに基づいて、計測対象の磁場を計算する磁場計算部と、を含む、磁場計測装置。【選択図】図４
