High Quality Content by WIKIPEDIA articles! Traditional radar sends directional pulses of electromagnetic energy and detects the presence, position and motion of an object (such as an aircraft) by analyzing the portion of the energy reflected from the object back to the radar station. Imaging radar attempts to form a picture of the object as well. The reader is encouraged to think again about what exactly is the meaning of an image. Very broadly speaking, image gives the two dimensional map of a certain property of a scene. In optical images, it is the optical reflective index of the material. Similarly in radar imaging a two dimensional map of the electromagnetic scattering coefficient of a scene is generated.