Ground surface deformation monitoring method and system based on multi-source monitoring data fusion

Abstract

The invention provides a ground surface deformation monitoring method and system based on multi-source monitoring data fusion. According to the invention, an ensemble Kalman filtering assimilation mode taking high-precision level settlement data as a main body is adopted; fusion of a radar image differential surface element settlement result of the mining subsidence area and discrete actual measurement level data is realized; high-precision monitoring of the mining area is realized; the high precision of the level inversion value in the center of the basin is maintained, and the D-InSAR differential data is fused, so that the superiority of the D-InSAR data in boundary monitoring is further retained; high-precision seamless subsidence monitoring of the whole mining area is realized, and the transitivity of the fused surface subsidence deformation data in space is more consistent with the actual mining area deformation area.

Description

technical field [0001] The invention relates to the technical field of surface deformation monitoring, in particular to a method and system for monitoring surface deformation based on fusion of multi-source monitoring data. Background technique [0002] As an effective planar monitoring technology, D-InSAR can well reflect the surface deformation information in the monitoring area, but due to the influence of various factors such as atmospheric delay, orbit error and decoherence, the monitoring results are not as good as the subsidence. The accuracy of leveling in the vicinity of rapidly subsiding basins is far inferior to that of leveling; although the leveling accuracy is high, the field workload is heavy and only a limited number of discrete points of subsidence deformation data can be obtained at a time, making it difficult to accurately grasp the deformation characteristics of subsidence deformation areas and settlement range. [0003] Therefore, how to complement the ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a surface deformation monitoring method and system based on multi-source monitoring data fusion, which aims to solve the problems of low accuracy and difficulty in grasping deformation characteristics in the single data source in the prior art in surface deformation monitoring, and realize the mining area High-precision seamless subsidence monitoring makes the spatial transition of the fused surface subsidence deformation data more consistent with the actual mining area deformation area

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