宽带全息重建算法应用于亚毫米波成像系统初探

毫米波全息成像技术是人身安检的重要技术手段,为进一步提高成像的分辨率和图像质量,研究宽带高频的亚毫米波成像系统具有重要的意义。本文基于亚毫米波全息成像系统的系统构成,给出了适用的宽带全息重建算法,对利用亚毫米波全息成像系统实际测得的相位和幅度信息进行重建并获得了目标图像。实验结果表明,上述宽带全息重建算法在亚毫米波波段内可以有效地重建图像,并验证了使用宽带成像可以有效提高图像分辨率、抑制散斑效应。

A Primary Study on Wide-band Holographic Reconstruction Algorithm Applied to Submillimeter-wave Imaging System

Millimeter-wave holographic imaging technique is important means for human bodysecurity inspection. In order to further improve imaging resolution and image quality, the research of wide-band and high-frequency submillimeter-wave imaging system has great significance. Based on the construction of submillimeter-wave holographic imaging system, this paper proposes an appropriate wide-band holographic reconstruction algorithm. The target image is obtained by the measured phase and amplitude information reconstruction using submillimeter-wave holographic imaging system. Experimental results show that, the wide-band holographic reconstruction algorithm can efficiently reconstruct image within sub-millimeter wave band, to validate the use of wide-band imaging can effectively improve image resolution and suppress speckle effect.