Three-component induction coil gesture measuring method and device

Abstract

The invention discloses a three-component induction coil gesture measuring method and device. The method comprises the following steps: constructing a testing environment firstly; then, reading data of each gesture sensor; then, carrying out complementary filtration on data acquired by the single gesture sensor through a low pass filter and a high pass filter to obtain gesture data of the single gesture sensor; and finally, fusing the gesture data of all gesture sensors. By adding the plurality of sensors to measure the gesture of a three-component induction coil, the more accurate and stablegesture data of the three-component induction coil is obtained through the measured data by means of a data fusing algorithm.

Description

technical field [0001] The invention relates to the field of aeronautical electromagnetics, in particular to a method and device for measuring the attitude of a three-component induction coil. Background technique [0002] Airborne Electromagnetics (Airborne Electromagnetics, referred to as AEM) is a geophysical detection method based on the aircraft as a carrier and electromagnetic induction. It is widely used in oil and gas detection, ore body survey and groundwater survey. During the flight, the electromagnetic wave of the magnetic moment is generated by the transmitting coil around the fuselage of the aircraft, which excites the earth to generate a secondary induction field. By receiving the secondary field data recorded by the pod, the electromagnetic field theory is used to explain the secondary field response, thereby Obtain information on geological structures at a depth of several hundred meters underground. This method is widely used in oil and gas detection, ore ...

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Problems solved by technology

After more than half a century of development abroad, the airborne electromagnetic method has matured its instrument system, and has achieved good application results in the fields of metal ore body survey, large-scale geological mapping, hydrogeology, engineering geological exploration, and environmental monitoring. , but the development of domestic time-domain fixed-wing airborne electromagnetic method has been lagging behind. In the 1970s, Changchun Institute of Geology and Heilongjiang Geological Bureau and other units jointly researched and developed my country's first time-domain airborne electromagnetic method system—— M-1 Inductive Pulse Transient Aeronautical Electromagnetic Instrument, the instrument passed the national appraisal in 1977. Due to various reasons, the system has not been put into actual production. There has been no related instrument research work in China in the later period, and there is still no domestic A time-domain fixed-wing aeronautical electromagnetic survey system put into actual production

[0004] At present, some researchers in this field have completed the influence of the attitude relationship between the transmitter, the three-component induction coil and the pod on the received data, but this is only limited to theoretical derivation, and stable and accurate attitude data cannot be measured under actual test conditions

Therefore, how to measure the attitude of the three-component induction coil and the attitude of the pod is a crucial task. At present, it is proposed to place attitude sensors on the pod and the induction coil to measure the attitude of the pod and the induction coil, but this method There are characteristics of inaccurate and incomplete measurement

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