Detection of debris (FOD) on runways in W-band: Relevance and validity domain of two-dimensional approaches

For sake of simplicity and execution speed, many imaging algorithms are based on two-dimensional approaches. We present a study on the relevance and validity domain of two-dimensional approaches to detect debris on airport runways in W-band (75-110 GHz), taking into account polarization (both 2D-TM and 2D-TE). The study deals, first with objects in free-space, and second placed on runway in far field configuration using plane wave illumination or horn antenna.