微波近场成像方法研究

提出一种适用于机场隐匿物体探测、走私以及其它场合安检的毫米波成像方法。使用的成像方法是用天线在x-y平面上进行扫描,利用接收到的目标散射回波的相位及其幅度信息重建目标的二维像。对二维重建算法进行详细的推导,并对该算法进行计算机仿真,仿真结果表明该算法不但可以准确重建目标的二维像,而且具有良好的分辨率。

Study on Microwave Imaging Method in Near Field

A millimeter-wave imaging method is presented for detection of concealed object,contraband at airports and safety check in other positions.The proposed imaging method is to scan over the x-y plane by using the antenna,and to reconstruct 2-dimensional image of the object by using the received phase and amplitude information of the target scattering echo.A 2-dimensional image-reconstruction algorithm is deduced in detail,which is simulated with a computer.The simulated result shows that the algorithm can not only reconstruct 2-dimensional image of the target,but also the image with perfect resolution.