Passive millimeter-wave imaging using photonic processing technology

被引:8
|
作者
Zhang Yue-Dong [1 ]
Jiang Yue-Song [1 ]
He Yun-Tao [1 ]
Wang Hai-Yang [1 ]
机构
[1] Beijing Univ Aeronaut & Astronaut, Sch Elect & Informat Engn, Beijing 100191, Peoples R China
关键词
passive millimeter-wave imaging; microwave photonics; radiometer; electro-optic modulation; photodetection; lock-in amplifier; OPTICAL UP-CONVERSION;
D O I
10.3724/SP.J.1010.2011.00551
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A passive millimeter-wave scanning imaging method using electro-optic modulation and photonic processing is presented. In this imaging method, the millimeter-wave signal in the radiometer is transformed to optical frequency by electro-optic modulation, and processed by photonic filter and photodetector. The principle of this millimeter-wave signal photonic processing method is described, and the relationship between component parameters and signal conversion is analyzed. The noise characteristics of this processing method are discussed. A passive millimeter-wave scanning imaging system using this photonic processing method was designed, and passive millimeter-wave images acquired using this method were first presented in China. The results show that the proposed passive millimeter-wave imaging method is effective and can obtain comparable imaging quality as that of traditional millimeter-wave radiometer imaging. This passive millimeter-wave imaging method has advantages such as large bandwidth and immunity to electromagnetic interferences.
引用
收藏
页码:551 / 555
页数:5
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