Multivariate physical property joint inversion method based on correlation constraint and target area dynamic regulation

A correlation and physical property technology, applied in the field of joint inversion between multiple physical properties, can solve the problems of increased iteration times and time, low efficiency, and impact on the stability of joint inversion, so as to improve pertinence, improve efficiency, and strengthen Effects of target correlation constraints

Active Publication Date: 2020-10-30
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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  • Multivariate physical property joint inversion method based on correlation constraint and target area dynamic regulation
  • Multivariate physical property joint inversion method based on correlation constraint and target area dynamic regulation
  • Multivariate physical property joint inversion method based on correlation constraint and target area dynamic regulation

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[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 multivariate physical property joint inversion method based on correlation constraint and target area dynamic regulation. Multi-physical-property joint inversion is a trend of geophysical data processing interpretation, and a traditional joint inversion method is only suitable for joint inversion between two physical properties. According to the method, a target region dynamic regulation and control mechanism is introduced, a Pearson correlation constraint algorithm among multiple physical properties is combined, differences among different physical property couplingitems are eliminated, synchronous equilibrium constraints among the multiple physical properties and differential constraints of an underground region are realized, influence of different local sourceregions is overcome, and the joint inversion stability is improved; meanwhile, a target function is decomposed through a synchronous iterative parallel strategy, iterative parallel among different physical properties is realized, and the inversion efficiency is improved. A research result of the project further overcomes the inversion multiplicity problem, the multi-source data fusion potential of joint inversion is mined, and the application range and prospect of the joint inversion are expanded.

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 Applications(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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