Mining area earth surface time sequence deformation monitoring method based on time domain discrete InSAR interference pair

Abstract

The invention discloses a mining area earth surface time sequence deformation monitoring method based on a time domain discrete InSAR interference pair. The time domain discrete InSAR interference pair not covering the whole time sequence process is obtained; highly coherent points in the time domain discrete InSAR interference pair are obtained; a relationship equation set of mining area dynamic sedimentation model parameters and unwrapping phases of the highly coherent points in the time domain discrete InSAR interference pair is built, and dynamic sedimentation model parameters of the highly coherent points are estimated based on the equation set; the time sequence deformation of the mining area earth surface can be estimated anytime through the parameters, and therefore mining area earth surface time sequence deformation monitoring based on the time domain discrete InSAR interference pair is achieved. The mining area earth surface time sequence deformation monitoring method based on the time domain discrete InSAR interference pair achieves monitoring of the mining area earth surface time sequence deformation through the discrete InSAR interference pair not covering the time sequence process, is ingenious in concept, is simple in process, is accurate and effective in monitoring effect, largely widens the application prospects of the InSAR technology, and lowers mining area time sequence deformation monitoring cost and technical limitations.

Description

technical field [0001] The invention relates to a time-series deformation monitoring method of the surface of a mining area based on time-domain discrete InSAR interference pairs. Background technique [0002] Synthetic aperture radar interferometry (Interferometric Synthetic Aperture Radar, referred to as InSAR) is a remote sensing technology that can obtain centimeter or even millimeter-scale deformation of the ground surface. The basic principle is to extract centimeter or even millimeter-level deformation values ​​of radar line-of-sight direction from the phase difference by performing differential interference processing on two or more Synthetic Aperture Radar (SAR) satellite images. Compared with the traditional geodetic technology, InSAR has the advantages of all-weather, continuous space coverage, high precision and low cost. However, the traditional differential interferometric SAR (D-InSAR) is susceptible to spatial de-correlation, temporal de-correlation, and atm...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a time-series surface deformation monitoring method based on time-domain discrete InSAR interference pairs, which overcomes the defects of traditional time-series InSAR methods such as high monitoring cost, harsh data requirements, and inability to monitor large-scale deformation fields.

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