The application of the matrix pencil and beamforming to determine the presence of termites in situ EUROCON 2009

The detection and location of termites in building structures involves near field sensing with RADAR arrays, where the plane wave assumption does not apply. In this paper, we explore a number of enhancements to the matrix pencil direction of arrival (DOA) algorithm, including augmentation with beamforming methods, which allow it to operate in the Fresnel Region, using a hybrid array which combines random and uniform planar array geometry. The results from simulations show that such a hybrid array can operate in the near field, even when there are coherent, interfering signals from other sources.