Abstract: A sensor information acquisition section acquires angular velocity information (GX, GY, GZ) around three axes acquired by three angular velocity sensors, and acceleration information (AX, AY, AZ) in three axial directions acquired by three acceleration sensors. A posture information calculation section calculates a posture angle and position coordinates in a virtual three-dimensional space based on the angular velocity information (GX, GY, GZ) and the acceleration information (AX, AY, AZ). The posture information calculation section calculates a fixed coordinate system velocity vector based on an inertial coordinate system acceleration vector (A) obtained from the acceleration information (AX, AY, AZ), and calculates position coordinates in a virtual three-dimensional space corresponding to the fixed coordinate system velocity vector.

Abstract: A sensor information acquisition section acquires angular velocity information (GX, GY, GZ) around three axes acquired by three angular velocity sensors, and acceleration information (AX, AY, AZ) in three axial directions acquired by three acceleration sensors. A posture information calculation section calculates a posture angle and position coordinates in a virtual three-dimensional space based on the angular velocity information (GX, GY, GZ) and the acceleration information (AX, AY, AZ). The posture information calculation section calculates a fixed coordinate system velocity vector based on an inertial coordinate system acceleration vector (A) obtained from the acceleration information (AX, AY, AZ), and calculates position coordinates in a virtual three-dimensional space corresponding to the fixed coordinate system velocity vector.

Abstract: A turntable (230) is installed so that an upper side (231) of the turntable is horizontal (S10). A posture detection device (1) is secured on a side (211) of a cubic jig (210) so that an X-axis (first axis) perpendicularly intersects a side (212) (second side), a Y-axis (second axis) perpendicularly intersects a side (213) (third side), and a Z-axis (third axis) perpendicularly intersects the side (211) (first side) (S12). The side of the cubic jig opposite to the side (212), (213), or (211) is sequentially secured on the upper side of the turntable (S14, S20, and S26). Detection values of the posture detection device are acquired in a state in which the turntable is stationary or rotated at a predetermined angular velocity (S16, S18, S22, S24, S28, and S30), and correction parameters are created (S32).