Structural static testing by interferometric synthetic radar

In this paper, the authors propose a radar technique for building structura l static testing or monitoring. The technique is based on interferometric s tep-frequency continuous-wave (SFCW) radar. It works synthesising microwave holographic images, and comparing pairs of holograms to obtain a deformati on map. The application of the interferometric technique for structural sta tic testing of a concrete pedestrian bridge is described. The radar-measure d deformation profile has been compared with a finite element simulation of the bridge. (C) 2000 Elsevier Science Ltd. All rights reserved.