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A joint inversion method of multiple physical properties based on correlation constraints and dynamic regulation of target regions

A technology of joint inversion and correlation, applied in the field of joint inversion between multiple physical properties, can solve the problems of low efficiency, influence of joint inversion stability, increase of iteration times and time, etc., to improve efficiency and strengthen target area. Relevance constraints, improve targeted effects

Active Publication Date: 2021-10-29
中国自然资源航空物探遥感中心
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Problems solved by technology

[0004] (2) With the introduction of multiple physical properties, the distribution commonality among different physical properties affects the stability of the joint inversion;
[0005] (3) Complex multi-physical property mutual constraints increase the number of iterations and time required, and the efficiency is not high

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  • A joint inversion method of multiple physical properties based on correlation constraints and dynamic regulation of target regions
  • A joint inversion method of multiple physical properties based on correlation constraints and dynamic regulation of target regions
  • A joint inversion method of multiple physical properties based on correlation constraints and dynamic regulation of target regions

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Embodiment Construction

[0032] The flow of a multi-physical property joint inversion method based on correlation constraints and target region dynamic regulation is as follows: figure 1 As shown, in each iteration process, different objective functions are calculated in parallel. In order to illustrate the present invention in conjunction with the embodiments, the joint inversion of the three physical properties of density, resistivity and magnetic susceptibility is taken as an example to describe the present invention in detail.

[0033] 1. Input the observation data of gravity, electric method and magnetic method, design the inversion area and grid division, set the initial model of density, resistivity and magnetic susceptibility, set the subdomain size and other parameter initial values ​​and iteration termination conditions;

[0034] 2. Using the latest model parameters, calculate the joint constraint item Φ among the three physical properties according to the Pearson correlation constraint alg...

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Abstract

The invention discloses a joint inversion method of multiple physical properties based on correlation constraints and dynamic regulation of target regions. Joint inversion among multiple physical properties is a trend in geophysical data processing and interpretation, while traditional joint inversion methods are only suitable for joint inversion between two physical properties. The present invention proposes to introduce a dynamic control mechanism for the target area, combined with the sub-domain Pearson correlation constraint algorithm among multiple physical properties, to eliminate the difference between coupling items of different physical properties, realize the synchronization balance constraints among multiple physical properties and the differentiation constraints of underground areas, and improve local different sources. The stability of the joint inversion is improved due to the influence of the region; at the same time, the objective function is decomposed through the synchronous iterative parallel strategy to realize the iterative parallel between different physical properties and improve the inversion efficiency. The research results of this project will further improve the multi-solution problem of inversion, tap the multi-source data fusion potential of joint inversion, and expand its application scope and prospects.

Description

technical field [0001] The invention belongs to the technical field of geophysical data inversion, and relates to a joint inversion method among multiple physical properties. Background technique [0002] Joint inversion can comprehensively utilize various geophysical exploration data information, and it is one of the effective ways to improve multi-solution problems. However, observations of multiple geophysical fields are often carried out in the same area, making it difficult for the joint inversion of two physical properties to meet the actual needs. The development of joint inversion of multiple physical properties is an inevitable trend. Based on this development trend, the present invention finds that the traditional method applied to the joint inversion of multiple physical properties has the following problems: [0003] (1) How to construct a balanced coupling relationship between multiple physical properties, so that different physical properties are in an equal p...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V11/00G01V3/38
CPCG01V3/38G01V11/00
Inventor 孙思源余学中
Owner 中国自然资源航空物探遥感中心
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