Application of Arc GB-SAR in Deformation Monitoring of High and Steep Slopes
The temperature difference along the southwestern mountainous is large,and the atmospheric environment is complex and variable.Based on the arc synthetic aperture and differential interferometry measurement technology,a portable Arc GB-SAR was developed and applied to a high and steep slope along a railway in western Sichuan.The domestic Arc GB-SAR and Italian IDS company IBIS-L GB-SAR were synchronously compared and tested for atmospheric disturbance correction ability,deformation measurement accuracy,and long-term uninterrupted real-time deformation monitoring was carried out on the high and steep slope.The results show that the domestic Arc GB-SAR has adaptive atmospheric disturbance correction capability.Under complex and variable climate conditions along the high and steep slopes of the southwestern mountainous railway,the atmospheric disturbance correction capability and deformation measurement accuracy are better than those of the IBIS-L GB-SAR.The stable point deformation values of domestic Arc GB-SAR are all within±1 mm within 24 hours,while the IBIS-L GB-SAR exceeds±1 mm.The RMS value of radial deformation error for domestic Arc GB-SAR at a monitoring distance of 1 km is 0.079 mm,while for IBIS-L GB-SAR it is 0.159 mm.This verifies that the domestic Arc GB-SAR has the advantages of high accuracy,high reliability,and rapid deployment.
mountain railwayArc GB-SARhigh and steep slopedeformation monitoring
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