Multi-waveform SFCW radar

A stepped frequency continuous wave radar for detecting flush buried and surface laid anti personnel landmines was designed and built. The system covers a frequency band from 400 MHz up to 4845 MHz. The range resolution is 3.4 cm and the maximum unambiguous range is 4.3 m. The antenna set up is a bi-static one with two Archimedean spirals with opposite sense of rotation. A particular property of the radar is that it transmits and receives a set of eight frequencies at the same time. The system parameters are particularly aimed at imaging algorithms exploiting the phase evolution over the antenna footprint. An example of the result achieved after synthetic aperture radar processing is presented.