1. A method for chemical signature resolved detection of a concealed object within a system, the method comprising: a. irradiating the system at a plurality of positions with an electromagnetic radiation of a specific wavelength; b. capturing a certain component of the scattered electromagnetic radiation from the object at 4 π angles and/or 4 π planes around the system c. obtaining a plurality of profiles from the captured component of the scattered electromagnetic radiation; d. filtering the profiles to obtain a chemical signature specific to the object; and e. resolving the chemical signatures to detect the concealed object. wherein, the step of detection includes determination of the shape, size and location of the object.