Diffraction Radiation Antenna for 8-mm Waveband Radar Meant for Airfield Observation
High-resolution millimeter wave radars become an essential part of ground safety systems. Among them, radar systems for airfield traffic control are of special interest. The diffraction radiation antenna has been designed for it, using novel technology. The antenna consists of a ridged dielectric waveguide, diffraction grating, and focusing lens. The eigenwave of the ridged dielectric waveguide excites resonant oscillations in the elements of the diffraction grating.
A novel W-band radar for airport traffic monitoring: implementation, first operational results, perspectives
High resolution requirements for airport surface traffic monitoring with lightweight, small, all-weather sensors call for the use of a network of millimetre-wave radars to perform the surveillance function in the surface movement control and guidance system. In this paper a W-band radar employed as the basic sensor is described. Some results of recent and present field trials are reported.
False alarm control and self-masking avoidance by a biparametric clutter map in a mixed interference environment
In the context of airport surface traffic surveillance through high resolution radars, an appropriate model for clutter or target backscattering is the log-normal. Because of the spatial non-homogeneity of clutter, the detection problem is better approached by the use of clutter maps. A biparametric clutter map is proposed and its performance is investigated, considering the effect of A\D conversion and an interference environment where clutter and noise may be of comparable intensity. A CFAR condition is attained when either clutter or noise dominates, and the increase of the false alarm rate is limited to well under one order of magnitude when clutter and noise have comparable power. Self-masking is avoided by the combined use of input limiting and threshold locking: the detectability loss due to self-masking is less than 4 dB in the case of clutter dominance and under 2 dB in the case of noise dominance.