Method and apparatus for eliminating background interference...

Details Method and apparatus for eliminating background interference... Method and apparatus for eliminating background interference...

G - Physics

01

D

G01D 3/028 (2006.01) A61B 5/04 (2006.01) A61B 5/05 (2006.01) G01D 3/032 (2006.01)

Patent

CA 2281254

A method and apparatus is described for making multichannel measurements of weak signals in noisy environments. The method is based on an adaptive compensation technique in which the large interfering background signal is first recorded by using the apparatus itself. By a statistical analysis of this multichannel measurement the independent components of the interference are determined. The apparatus is provided with compensator elements which are properly coupled to individual sensors for both to collect and distribute information on the interference during the measurement. The proper couplings are derived from the interference measurement mentioned above. In this way the output of the device can be made immune to the large amplitude interference components present in its environment. This reduces the dynamic range requirement for the data transport and storage systems.

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