| 摘要 |
<p>PURPOSE:To provide a magnetic noise compensating method by which negation of a background magnetic field can be compensated with high accuracy without increasing the number of compensating magnetism sensors so much. CONSTITUTION:Among plural triaxial magnetism sensors S1,..., S5, the triaxial magnetism sensor S1 is determined as a primary compensating magnetism sensor to negate a change in a background magnetic field, and the residual triaxial magnetism sensors S2,..., S5 are determined as primary magnetism sensors to be compensated, and first signal processing is performed so that a change in the background magnetic field of the primary magnetism sensors S2,..., S5 to be compensated is negated by the primary compensating magnetism sensor S1, and next, among the primary magnetism sensors S2,..., S5 to be compensated, the triaxial magnetism sensor S2 is determined as a secondary compensating magnetism sensor to negate a change in a background magnetic field remaining even if the first signal processing is performed, and the residual primary magnetism sensors S3, S4 and S5 to be compensated are determined as secondary magnetism sensors to be compensated, and second signal processing is performed so that a change in the background magnetic field of the secondary magnetism sensors to be compensated is negated by the secondary compensating magnetism sensor.</p> |
