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.
Threshold control for a millimetre-wave miniradar: biparametric vs. monoparametric clutter maps
Surface movement radar employed in surface movement guidance and control systems (SMGCS) have to detect and locate any object on the airport surface that may adversely affect the safety of operations. The objects of interest belong to a variety of categories (e.g. aircraft, vehicles, movable staircases, suitcases), as well as the clutter in which they are embedded (the concrete/asphalt of the tracks, the grass surrounding them, rain). In addition, clutter may not be the dominant interference factor: in the general case the interfering environment will be made up of a mixture of clutter and of Gaussian noise. As the resulting interfering background will be time-varying too, the adaptive control of false alarms is a much needed feature of the radar signal processor. Traditional cell-averaging CFAR techniques cannot be adopted here, because of the spatial non-homogeneity of clutter. A clutter map approach (also known as temporal adaptive thresholding or scan-by-scan averaging) is therefore preferred. An already proposed detection scheme based on this approach is the so-called monoparametric clutter map. The limitations of this scheme are further explored; subsequently a novel processor, named the biparametric clutter map, is proposed and the performances of the two schemes are compared.