A Design Method for Semi-aerial Transient Electromagnetic Observation Area
A transient electromagnetic and design method technology, which is applied in the field of earth exploration, can solve the problems of no observation area and design scheme in the semi-aviation transient electromagnetic exploration system, and achieve the effect of ensuring accuracy and optimizing the division of areas.
Active Publication Date: 2021-08-31
GUANGXI COMM PLANNING SURVEYING & DESIGNING INST +1
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[0004] At present, the development of semi-aerial transient electromagnetic method with grounded source is still in its infancy. For the observation area, most of them rely on experience to design the survey plan. For other geophysical electromagnetic survey methods using grounded wire source, such as CSAMT and LOTEM, etc. There is a targeted observation area design method, but there is still no targeted observation area design scheme for the semi-aerial transient electromagnetic survey system
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[0032] The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments.
[0033] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
[0034] It should be noted that the terminology used herein is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.
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The present disclosure provides a method for designing a semi-aerial transient electromagnetic observation area, which uses the transient electromagnetic forward algorithm and the layered model to calculate the attenuation rate distribution, and divides the observation area into areas suitable for observation and areas not suitable for observation. Using the best fitting elliptic curve to fit the regional boundaries, the semi-aerial transient electromagnetic field exploration area can be quickly divided into areas suitable for observation and areas not suitable for observation; no longer rely solely on experience. At the same time, considering the influence factors of the two parameters of source length and buried depth, the optimal fitting elliptic curve is used to fit the regional boundary, which can optimize the division of the region and ensure the accuracy of the division.
Description
technical field [0001] The disclosure belongs to the technical field of earth exploration, and relates to a method for designing a semi-aerial transient electromagnetic observation area. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] The semi-aerial TEM method places the excitation source on the ground, and uses a manned or unmanned aerial vehicle to mount the receiving device to collect the transient response. This working method makes the semi-aerial TEM method integrate the ground TEM method and The advantages of the airborne transient electromagnetic method are that it has the characteristics of high signal-to-noise ratio, flexibility and high efficiency, and large detection depth, and can adapt to geological and terrain conditions such as alpine regions, high-altitude mountainous areas, deserts, Gobi, forested areas, and karst devel...
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IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 李敦仁孙怀凤叶琼瑶陈成栋张观树杨洋毛承英徐龙旺邓胜强唐正辉骆俊晖甘力
Owner GUANGXI COMM PLANNING SURVEYING & DESIGNING INST