Ground-based deformation measurement radar configured with multiple-input multiple-output antennas

Abstract

The application of ground-based radar to monitor the terrain displacement has attracted more and more attentions recently. Most of the existing ground-based radars utilise a linear horizontal rail where the antennas move to generate the image of the test site. Here, the authors present a topology of antenna array with which the digital elevation model of the observed scene can also be generated besides the 2-D image. Several field experiments have been carried out to evaluate the performance of authors’ developed ground-based differential interferometry radar (GB-DInR) configured with this multiple-input multiple-output (MIMO) antenna array. The results demonstrate that authors’ developed MIMO GB-DInR is able to achieve a sub-millimetre precision of displacement measurement and derive the elevation information of target with an error of <0.1 m at a distance of around 100 m.

Keywords

• terrain mapping
• remote sensing by radar
• displacement measurement
• interferometry
• antenna arrays
• mimo communication
• synthetic aperture radar
• digital elevation models
• geophysical techniques
• radar interferometry
• antennas
• authors
• displacement measurement
• ground-based deformation measurement radar
• multiple-input multiple-output antennas
• ground-based radar
• terrain displacement
• existing ground-based radars
• linear horizontal rail
• test site
• digital elevation model
• multiple-input multiple-output antenna array
• size 0.1 m
• size 100.0 m