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A frequency adaptive filter and electromagnetic method receiver

A frequency adaptive, filter technology, applied in the field of electronics, can solve the problems of doping interference components, no filtering processing, etc., to achieve the effect of random noise suppression

Active Publication Date: 2018-07-27
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Signals with a frequency in the range of 0-fm do not participate in data calculation and analysis, but may be doped with a large number of interference components, such as power frequency and its harmonic interference, but the above processing method does not perform filtering processing on this

Method used

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  • A frequency adaptive filter and electromagnetic method receiver
  • A frequency adaptive filter and electromagnetic method receiver
  • A frequency adaptive filter and electromagnetic method receiver

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Embodiment Construction

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0026] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate cir...

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Abstract

The invention discloses a frequency adaptive filter and an electromagnetic receiver. For the characteristic that a manual field source method collects information of one frequency point every time, by adding a frequency adaptive band-pass filter to a receiver, all signals except the emission signal frequency point of a transmitter are filtered, interference of the signals on useful signals can be filtered, and meanwhile, random noise can also be suppressed.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a frequency adaptive filter and an electromagnetic method receiver. Background technique [0002] In geophysical electromagnetic measurement operations, the signals of electromagnetic sensors are collected and recorded. This signal can be a natural field signal from the earth or an artificial source field signal emitted by a transmitter. Both have a huge market in actual production. need. [0003] When collecting natural field signals, the receiver works alone to receive the natural signals sent by the earth. Usually, it is necessary to record all the signals of each frequency band in case of demand. When collecting artificial source field signals, the transmitter and receiver work strictly synchronously. The transmitter transmits a certain frequency band signal at a certain time interval, and the receiver collects and records synchronously. [0004] During the working process of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H21/00
CPCH03H21/0012H03H21/0043
Inventor 王中兴杨永友底青云张文秀张天信吴树军
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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