Stand-off detection of suspicious concealed objects in centimetreand millimetre-wave range using sampling phased array principle and sparse array

In the area of Homeland Security the concept for a novel imaging system for detection of dangerous and illicit objects concealed under clothes of humans under motion is presented. It is based on innocuous electromagnetic waves in cm- and mm-wave range. Principles to be used comprise synthetic aperture to increase lateral resolution, polarization to enhance object separation as well as sampling phased array and sparse array to reduce the number of needed antennas. To reach real time capability techniques like parallel processing, FPGA's, graphic processing units and look-up tables will be applied.