Abstract:

Twodimensional shortrange microwave holographic imaging technology has been considered to be applied to human security checks, medical imaging, concealed weapons detection, and so on. This technology collects backscattered and forwardscattered data, and the incident fields are obtained entirely by either measurement or simulation directly. The imaging quality and resolution compared with the shortrange millimeter wave holography imaging technology have certainly been improved. But this technology has yet no imaging system, and are still in its infancy. A set of program is proposed to realize the algorithms of the technology which employ feldberechnung bei korpern mit beliebiger oberflache (FEKO) to simulate scattering waves and incident fields of the target, and then uses the grid method to process the gets data. Finally, the processed data are used to reconstruct the target image. On this basis, it is proved that the true incident filed and forwardscattered data significantly affect the imaging results. Simultaneously, the effectiveness of target images got by changing the scan antenna aperture size, location and images of complicated target object are analyzed, and the corresponding conclusions are given， providing reference for practical applications.