G - Physics – 01 – R
Patent
G - Physics
01
R
324/57
G01R 33/022 (2006.01) G01R 33/035 (2006.01)
Patent
CA 1129961
ENHANCING REJECTION RATIO Abstract of the Disclosure The present invention relates to a device and method for producing a compensated gradiometer signal from an uncompensated gradiometer signal having at least one unwanted term which varies as a function of magnetic field. The device is comprised of a sensing unit for sensing the magnetic field. A generator is provided for producing a first vector signal which is representative of the magnetic field. A function generator is provided for producing a second vector signal which represents a component of one of the at least one unwanted term. A mixer is connected to the generator and the function generator for producing a vector output signal which is equal to the one of the at least one unwanted term. Finally, a subtractor unit is provided which is connected to the mixing means for subtracting the output vector signal from the uncompensated gradiometer signal to thereby produce the compensated gradiometer signal.
337515
Burbank Max B.
Fife Alistair A.
Lomnes Randy K.
Vrba Jiri
Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence Of Her Majest
Kirby Eades Gale Baker
LandOfFree
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