Electromagnetic detection noise measurement system and noise reduction method

Abstract

The invention provides an electromagnetic detection noise measurement system and a noise reduction method. The system comprises a transmitting electrode connected with a transmitting machine and a receiving electrode group disposed at a preset measurement distance to the transmitting electrode, wherein each receiving electrode is connected with a signal acquisition apparatus. The electromagnetic detection noise measurement system also comprises a noise measurement electrode arranged between two adjacent receiving electrodes, wherein the noise measurement electrode is connected with the signal acquisition apparatus; the transmitting electrode and the receiving electrodes are disposed in a same direction of a measurement line; and a distribution direction of the noise measurement electrodes is orthogonal with the direction of the measurement line. According to the electromagnetic detection noise measurement system and the noise reduction method, the noise measurement electrodes are respectively arranged between two adjacent receiving electrodes, the transmitting electrode and the receiving electrodes are disposed in the same direction of the measurement line, and the distribution direction of the noise measurement electrodes is orthogonal with the direction of the measurement line, so that the signal received by a receiving end can be effectively acquired, a background noise signal of the receiving end can also be acquired, various signals are denoised subsequently according to a preset noise reduction model, and a needed real field signal is obtained.

Description

technical field [0001] The invention relates to the technical field of geophysical exploration, in particular to an electromagnetic detection noise measurement system and a noise reduction method. Background technique [0002] Electromagnetic detection has the characteristics of low cost, convenience and high resolution, and is especially suitable for the detection of metal deposits. It has become a research hotspot in the field of geophysical exploration. [0003] However, on the one hand, in electromagnetic detection, the strength of the effective signal decays rapidly with the increase of the distance of sending and receiving, and the electric field strength at the receiving end generally can only reach the mV level; Seriously, in some work areas with frequent human activities, the intensity of spike interference and power interference is extremely high, and effective signals are often overwhelmed by these background noises. [0004] At present, the common noise reductio...

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Problems solved by technology

[0005] The invention provides an electromagnetic detection noise measurement system and a noise reduction method, which are used to solve the problem of poor noise reduction effect in the prior art

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