A new near-field Sar imaging algorithm

In this paper, electromagnetic scattering characteristic imaging approaches in near-field measurement are introduced briefly. The phase of each wave is shifted according to its spreading angle so to recover the original field, and synthesized together to reconstruct the scattering distribution. In addition, the indoor systems for acquiring data in the anechoic chamber are described. Finally, the effectiveness of the approach is demonstrated by the imaging experiment of tank model, and it shows that the novel approach has potential signification in engineering.