An investigation of antenna element spacing on the quality of millimetre wave imaging
An investigation of antenna element spacing on the quality of millimetre wave imaging
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天线阵元间距对毫米波成像质量的影响研究
DOI：
10.1109/aps.2008.4619932
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
J. Dupuy
中科院分区：
文献类型：
--
作者：
L. Zhang;Y. Hao;C. Parini;J. Dupuy
本文介绍了一种波束宽度为10 °的高增益喇叭作为单基地毫米波成像雷达的扫描天线。从天线到待成像物体的距离分别设置在近场和远场范围内。通过测量记录来自物体的后向散射电场，并通过应用全息处理算法来重建图像。通过改变采样密度来执行形成目标图像所需的最小采样密度的研究。由于合成孔径等效于毫米波成像阵列，该研究为毫米波成像阵列设计提供了重要信息。
In this paper, a high gain horn which has a 10 degree beam width is used as the scanning antenna in a monostatic millimetre wave imaging radar system. The distances from the antenna to the object to be imaged are set in the near and far field range respectively. The backscattered electric field from the object is recorded from the measurement and an image is reconstructed by applying holographic processing algorithm. The investigation of the minimum required sampling density to form the target image is performed by varying the sampling density. Since the synthetic aperture is equivalent to the imaging array, the investigation provides vital information for millimetre wave imaging array design.