Bistatic extension of two coherent MMW-sensors applied to the imaging of humans

We present design and realization of a bistatic extension of a broadband monostatic FMCW Radar working in the Millimeter-Wave (MMW) region for imaging purposes. The usable frequency range lies between 90GHz and 101 GHz. This bandwidth of 11GHz is necessary for the purpose of a high resolution imaging task as it could be used for the detection of threats at a person's body in security-sensitive environments. Due to the fact that MMWs propagate easily through common clothing it is feasible to image objects like concealed weapons worn beneath the clothing. MMW-Imaging of humans in the is one possibility to enhance the capabilities of nowadays security checkpoints, e. g. at airports.