Passive millimetre-wave imaging architectures
Passive millimetre-wave imaging architectures
复制标题
无源毫米波成像架构
DOI：
10.1088/1464-4258/5/4/363
复制
发表时间：
2003
影响因子：
--
通讯作者：
I. Blankson
中科院分区：
文献类型：
--
作者：
A. Lettington;D. Dunn;M. Attia;I. Blankson
本文讨论了各种被动毫米波成像系统。它包括辐射源、大气传输及其各种应用的简要总结。接下来是对毫米波辐射检测方法的回顾。成本分析表明，目前扫描系统比高性能系统的焦平面接收器阵列更具成本效益。然后考虑各种类型的可用成像系统，重点关注最新发展及其波束形成方法。结论是，目前以及在可预见的未来，光束形成和光束控制是最具成本效益的解决方案。其中包括一些关于接收器如何与其收集孔径匹配的一般性评论，后面是关于光束形成组件的部分。其中包括最近开发的轻质、低成本、高性能反射透镜。然后展示了如何将其与机械扫描系统相结合以形成高性能无源毫米波成像系统。
This paper discusses various passive millimetre-wave imaging systems. It includes sources of radiation, atmospheric transmission and a brief summary of their various applications. This is followed by a review of methods for detecting millimetre-wave radiation. From a cost analysis it is shown that scanned systems are at present far more cost effective than focal plane array of receivers for high-performance systems. Then various types of imaging system available are considered with greater emphasis on recent developments and their methods of beam forming. It is concluded that at present, and for the foreseeable future, optical beam forming and beam steering are the most cost-effective solutions. Some general remarks are included as to how receivers are matched to their collection apertures, followed by a section on optical beam-forming components. The recent development of a lightweight, low-cost, high-performance reflective lens is included. It is then shown how this may be combined with mechanical scanning systems to form high-performance passive millimetre-wave imaging systems.