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| A Simulated Annealing Method for Time-domain Electromagnetic Survey Data Inversion |
| Zhang Jian-guo①② Wu Xin① Zhao Hai-tao①② Qi You-zheng①② Fang Guang-you① |
①(Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences, Beijing 100190, China)
②(University of Chinese Academy of Sciences, Beijing 100049, China) |
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Abstract The highly nonlinearity and non-uniqueness of the geoelectric model constrain the application of simulated annealing method in the Time-domain ElectroMagnetic (TEM) explorations. A simulating annealing inversion method is presented to get the geoelectric model from the data of the TEM method. Firstly, by the dual digital filtering method, the fast and accurate forward problem is settled. Furthermore, the inversion is converted into an optimization issue and the simulating annealing inversion method is applied to the search for the global optimal solution, of which the search step can be adjusted adaptively, hence improving the searching effeciency. The comparison results with conventional inversion methods show that the proposed method can achieve the global optimal solution and a more accurate result of the geoelectric model.
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Received: 13 February 2014
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Corresponding Authors:
Zhang Jian-guo
E-mail: wudajianguo@126.com
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2015, Vol. 37 
