Signal vector derivation apparatus, method, program, and recording medium
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United States of America
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Mar 18, 2025
Grant Date -
Mar 21, 2024
app pub date -
Mar 7, 2022
filing date -
Mar 7, 2022
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Abstract
A signal vector derivation apparatus receives measurement results from a plurality of sensors that receive signals each represented by a vector having a predetermined direction and measure triaxial components orthogonal to each other and derives the direction of the vector. The measurement results from the sensors are each proportional to a sum of the triaxial components of the vector multiplied, respectively, by first coefficients. The signal vector derivation apparatus includes a spectrum deriving section and a direction deriving section. The spectrum deriving section derives a spectrum obtained based on the measurement results from the sensors and a sum of the first coefficients multiplied, respectively, by second coefficients, the spectrum having local maximum values within voxels in which signal sources that output the respective signals exist. The direction deriving section derives the direction of the vector based on the second coefficients used to obtain the spectrum.
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