Methods and equipment to recognize unwanted artifacts in a multi-channel magnetic field or charge potential measurement, to remove

摘要

The present invention recognizes the unwanted artifacts in multi-channel magnetic field or charge potential measurements The invention of removal, provides a method and the like for removing artifacts that appear in the individual channels of a multi-channel measurement instruments. First, the base, which is defined as the n-dimensional subspace is generated. In the definition of the n-dimensional base, statistical model based on statistics of the physical model or N dimension of the recorded signal of Signal Space Separation method is used. The After that, coupled to the base of the n-dimensional adding m pieces of signal vectors (n + m) dimension of the base is generated. Thereafter, the signal vectors of the recorded N-dimensional in combined basis, is decomposed into n + m-number of elements. And, finally, the element corresponding to the m of the added vectors in the combined base is subtracted from the signal vector of the N-dimensional recorded. .BACKGROUND 2