Multistatic ground-based differential interferometric MIMO radar for 3D deformation measurement

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Deformation measurement is crucial for forecasting landslide hazards of natural and engineered slopes.Ground-based differential interferometric radar (GB-DInRad) uses phase differential interferometric technology for surface deforma-tion measurements and offers the advantages of all-day,all-weather,and noncontact measurements.However,this tech-nique can only measure one-dimensional (1D) deformations along a radar-target line of sight (LOS).For conventional scanning GB-DInRad,its measurement speed is limited by the mechanical movement of antennas.Complicated envi-ronmental disturbances also severely affect the measurement accuracy.
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