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REDUCTION OF NOISE IN ELECTRICAL FIELD MEASUREMENTS.
REDUCTION OF NOISE IN ELECTRICAL FIELD MEASUREMENTS.
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机译:降低电场测量中的噪声。
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摘要
A method for removing cultural noise from a measurement of the field generated by an electromagnetic source, such as a current bi-pole or a magnetic loop source, the method comprising: simultaneously measuring the electromagnetic signal at a field measurement position and a calibration position close to the field measurement position, but in a null field of the source; using the field measurement and the calibration measurement to compute a filter that estimates the component of the field measurement that is correlated with cultural noise; convolving the computed filter with the calibration measurement to yield the estimated cultural noise component, and subtracting that component from the field measurement.
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