Real-Aperture-Radar

The Real-Aperture-Radar (RAR) is an interesting terrestrial remote sensing device, which can be used to monitor the vibration characteristics of buildings, structures and infrastructures, see Luzi et al. (2012) and (2014). It offers three interesting vibration monitoring capabilities:

  • a very high sensitivity to displacements;
  • the capability to sample the vibrations in time at high frequencies;
  • non-contact and easy-to-make remote sensing measurements.

These are unmatched capabilities from the point of view of geomatics, which can be exploited to open new applications. This technique can be used in some specific fields such as Civil Engineering (Luzi et al., 2017), Structural Engineering, Seismological Engineering, etc. The activity of our group include:

  1. Developing and integrating new RAR sensors, e.g. see Luzi et al. (2017b).
  2. Developing new vibration monitoring applications related to buildings, towers, bridges, viaducts, etc.

RAR_Fig_1

Vibration plot (displacement time series) of a building.

RAR_Fig_2

Measurement of the vibration characteristics of a cable.

References

Luzi, G., Monserrat, O. and Crosetto, M. (2012). “The potential of coherent radar to support the monitoring of the health state of buildings”. Research in non-destructive evaluation, vol. 23, N. 3, July-September 2012, pp. 125-145.

A radar-based monitoring of the Collserola tower (Barcelona) , Mechanical Systems and Signal Processing, Vol. 49, No. 1-2, pp. 234-248, May 2014.

Radar interferometry for monitoring the vibration characteristics of buildings and civil structures: recent case studies in Spain , Sensors, 17(4), March 2017. Doi: 10.3390/s17040669.

, (2017b). An interferometric radar sensor for monitoring the vibrations of structures at short ranges , In Proceedings of International Conference on Engineering Vibration (icOev 2017), 4-7 September 2017, Sofia (Bulgaria).