Method of reducing impulsive noise in electromagnetic geophysical data

Patent · Tue Jul 31 04:00:00 EDT 1990

OSTI ID:6594251

Spies, B R

This patent describes a method of reducing impulsive noise in electromagnetic geophysical data. It comprises: providing receiving antenna means for receiving an electromagnetic signal. The receiving antenna means receiving impulsive noise; providing noise sensor means for receiving the impulsive noise and placing the noise sensor means so as to receive the impulsive noise that is received by the receiving antenna means and so as to minimize the reception of the electromagnetic signal; simultaneously receiving the electromagnetic signal with the receiving antenna means so as to create a signal record and receiving the impulsive noise with the noise sensor means so as to create a noise record; examining the noise record for occurrences of the impulsive noise by comparing the noise record with a threshold noise value and identifying those instances of time in which the noise record exceeds the threshold; removing those portions of the signal record which are simultaneous with the identified instances in which the noise records exceeds the threshold, wherein the signal record has reduced impulsive noise.

• Assignee: Atlantic Richfield Co., Los Angeles, CA (USA)
• Patent Number(s): A; US 4945309
• Application Number: PPN: US s 7-393559
• OSTI ID: 6594251
• Country of Publication: United States
• Language: English

Related Subjects

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03 NATURAL GAS
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47 OTHER INSTRUMENTATION
ANTENNAS
BACKGROUND NOISE
CONTROL
DATA PROCESSING
ELECTRICAL EQUIPMENT
ELECTRICAL SURVEYS
ELECTROMAGNETIC SURVEYS
EQUIPMENT
GEOPHYSICAL SURVEYS
NOISE
NOISE POLLUTION CONTROL
POLLUTION CONTROL
PROCESSING
SIGNAL CONDITIONING
SURVEYS