1. An adaptive high speed/high resolution 3D image reconstruction method for any measurement distance, comprising: setting a weight for image reconstruction by an image reconstruction position, a position of an ultrahigh frequency antenna, and a measurement frequency, which are previously determined before initiation of measurement; receiving a scattered electromagnetic wave from an object; removing background noise from the received scattered electromagnetic wave; performing a parallel processing on values measured by the scattered electromagnetic wave and the previously set weight for image reconstruction in each region on a measurement trajectory; and reconstructing a 3D image by combining values for the respective regions on which the parallel processing is performed.