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Time-domain airborne electromagnetic method motion noise detection apparatus and inhibition method

An aviation electromagnetic and noise detection technology, which is applied in measurement devices, electric/magnetic exploration, radio wave measurement systems, etc., to achieve the effect of suppressing motion noise, reducing the number, and reducing the amount of data

Inactive Publication Date: 2015-08-26
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a motion noise detection device suitable for time-domain airborne electromagnetic method for the problem of introducing motion noise due to the posture swing of the receiving coil;

Method used

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  • Time-domain airborne electromagnetic method motion noise detection apparatus and inhibition method
  • Time-domain airborne electromagnetic method motion noise detection apparatus and inhibition method
  • Time-domain airborne electromagnetic method motion noise detection apparatus and inhibition method

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Embodiment 1

[0049] Suspension rope 3 is made up of upper end part and lower end part, wherein the upper end part is a single rope with a length of 40 meters, which is tied to the bottom of the helicopter 1 cabin, and the lower end part is 16 ropes of different lengths with a length of 9-11 meters. Be tied on the transmitting coil 5 at equal intervals, take the forward direction of the transmitting coil 5 as the criterion, the long rope is tied to the rear end, and the short rope is tied to the front end, so that the transmitting coil 5 is balanced in force during the flight and maintains a horizontal state. The transmitting coil 5 has a diameter of 12 meters and is made of 5 turns of copper core cables with a diameter of 2 centimeters. Its exterior is covered with glass steel pipes of aviation materials and supported by a cross-shaped bracket 4 to prevent the transmitting coil 5 from being affected by the hanging rope. 3 deformation due to traction. The cross-shaped support 4 is made of g...

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Abstract

The invention relates to a time-domain airborne electromagnetic method motion noise detection apparatus and an inhibition method. The apparatus comprises an air portion and a ground portion. The air portion comprises a helicopter, air data collection equipment, a transmitting coil, a preamplifier, a z component receiving coil and an attitude sensor. The ground portion comprises GPS ground data collection equipment, a three-component fluxgate and a preamplifier. The ground portion and the air portion realize time synchronization through GPS. Compared to the prior art, by using the apparatus and the method in the invention, the single attitude sensor is used so that an attitude detection function is realized and a detection apparatus amount is reduced; a data size is decreased and a data processing rate is increased; a three-component fluxgate measurement geomagnetic field is used as a background magnetic field so that advantages of high precision, high real-time performance and convenient operation are possessed; the GPS is used to realize time synchronization of data receiving; based on coincident data, working personnel can conveniently carry out on-site data processing and analysis and corresponding compensative measures are used so that a purpose of inhibiting the motion noise is reached.

Description

Technical field: [0001] The invention relates to a time-domain aviation electromagnetic method motion noise detection device and a suppression method, in particular to a pod helicopter time-domain aviation electromagnetic method exploration device. Background technique: [0002] The pod-type helicopter aviation time-domain electromagnetic exploration system uses the helicopter to hang the transmitting coil, and transmits a high-power magnetic field signal to stimulate the underground medium, and the underground medium will generate a secondary field due to the eddy current effect. At the same time, the secondary field signal is received by the receiving device to realize the interpretation of the resistivity structure of the underground medium. The Z-component receiving coil is the core detection component of the time-domain aerial electromagnetic exploration system. It is fixed on a cross-shaped bracket. During flight, due to the influence of wind, attitude changes such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/10
Inventor 陈晨刘飞王言章林君于生宝
Owner JILIN UNIV
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