提出了一种双频毫米波全息成像系统方案。该方案不仅可以准确地测定目标与成像雷达天线口径的距离,而且可 以对一定距离但事先未知的目标进行全息成像。相比于需要放置在预知位置的美国太平洋西北国家实验室研究的单频和宽带毫米波全息成像系统,该方案具有更为广泛应用的潜力,不仅可以用于个人携带的藏匿武器或者违禁物品的检查, 还可以作为毫米波成像雷达用于军事目的。文中根据该成像系统确定了毫米波全息成像方法,建立了相应算法,给出了成像仿真结果。该方案可对实际系统设计提供一定参考。

A new millimeter waves (MMW) holographic system using dual frequencies is presented, which can detect the distance between a target and antenna aperture of the system, but also image holographic to a certain distance target. Compared with the similar work done by the Pacific Northwest National Laboratory (PNNL) in USA, the designed scheme has more promising and wider applications, such as to check concealed guns or other contrabands in or under personal clothing at a security point and to track object as a kind of MMW imaging radar in military etc. Further more, an imaging algorithm is presented and simulated based on the imaging system. Meanwhile, a simulated imaging result is provided too. In a word, the discussions maybe give some help for designing the imaging system in practice.

江苏省自然科学基金资助项目