Application of broadband radar to volumetric sensing and distance measurement

States that broadband radar is a relatively recent technology which is finding many new applications such as sensing the position and movement of objects in and around vehicles, fluid level measurement in storage tanks, and detecting intruders. Its advantages over competing technologies (ultrasonics, optical and conventional radar) include: low cost implementation; very low power consumed and radiated; accurate position information; unobtrusive, i.e. radar can be mounted within a sealed plastic enclosure; tolerant of dust, spray and other contaminants. Describes the application of broadband radar to consumer, automotive and industrial sensing, and illustrates how a sensor can be used in two modes, first to sense intrusion within a volume and, second, to provide a distance measuring capability.