On the move millimeter wave interrogation system with a hallway of multiple transmitters and receivers

A system for screening an unconstrained subject, the system comprising:

• a plurality of transmitters spatially distributed on two sides along a path of movement of a subject, each of the plurality of transmitters transmitting, in sequence, radiation to be scattered from the subject;
• a plurality of sensors spatially distributed on the two sides and coherently configured with respect to the plurality of transmitters, the plurality of sensors collecting measurements of scattered radiation corresponding to the radiation transmitted by each of the plurality of transmitters, such that:
• (i) at least a first one of the plurality of sensors collecting measurements of scattered radiation transmitted by at least one of the plurality of transmitters located on an opposite side of the path of movement as that on which the at least first one of the plurality of sensors is located, to produce a cross-path measurement, and
• (ii) at least a second one of the plurality of sensors collecting measurements of scattered radiation transmitted by at least one of the plurality of transmitters located on a same side of the path of movement as that on which the at least second one of the plurality of sensors is located, to produce a side-view measurement;
• and
• an imaging module, executable by a processor, the imaging module (i) generating, based on both the collected cross-panel and side-view measurements, a two-dimensional or three-dimensional reconstruction estimate of body surface of the subject with one or more attached foreign objects, and (ii) detecting and identifying, based on the two-dimensional or three-dimensional reconstruction estimate of the body outline, surface or volume, one or more foreign objects on the subject.