A dynamic inversion method and system for natural electric field monitoring data

Abstract

The invention provides a method and system for dynamically inversing monitoring data of a natural electric field. The method comprises the following steps: establishing a state model of a polluted monitoring place; establishing an observation model of the polluted monitoring place; obtaining data of a prior estimation pollutant diffusion evolution model at the k-1 time; obtaining data of the prior estimation pollutant diffusion evolution model at the k time according to the state model; and obtaining actually measured data of the natural electric field at the k time, correcting the data of the prior estimation pollutant diffusion evolution model at the k time according to the state model and the observation model, and obtaining data of a posterior estimation pollutant diffusion evolution model at the k time. According to the invention, the pollutant diffusion evolution rule is combined with the actually measured data of the natural electric field; successively associated information in the actually measured time series data of the natural electric field is utilized sufficiently; the prior knowledge and algorithm stability in inverse of the actually measured data of the natural electric field can be increased; and a dynamic inverse result is provided for monitoring the underground pollutant diffusion condition.

Description

technical field [0001] The invention relates to the field of environmental monitoring, in particular to a method and system for dynamic inversion of natural electric field monitoring data. Background technique [0002] With the sustained and rapid development of my country's economy, the problem of environmental pollution in the process of industrialization and urbanization has become increasingly serious. In particular, there are more and more domestic and industrial waste landfills, industrial and mining waste water and residue pools, etc., which seriously threaten the safety of surrounding soil and groundwater. Shallow surface pollution such as soil and groundwater is concealed and hysteresis, and it also has cumulative effects and long-term residual effects, so it is very difficult to control. Real-time monitoring and immediate control of the spread of pollution sources is an active method to protect soil and groundwater from pollution or less pollution . Compared with...

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Problems solved by technology

Due to factors such as the difference between the forward modeling model and the actual physical model and the noise influence of the observation data, such problems often have no definite solution or multiple solutions

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