3mm辐射成像研究

李良超; 杨建宇; 姜正茂; 郑鑫

红外与毫米波学报, 2009, 28 (1): 11, 网络出版: 2010-12-13

3mm辐射成像研究

RESEARCH ON 3 mm RADIOMETRIC IMAGINGLI

论文大纲

李良超杨建宇姜正茂郑鑫

作者单位

电子科技大学电子工程学院, 四川成都 610054

被动毫米波成像迪克式辐射计超分辨频谱外推最大似 passive millimeter-wave imaging dicke-radiometer super-resolution spectral extrapolation maximum-likeli-hood

摘要

在研究毫米波无源成像原理的基础上，设计出了简洁的3mm超外差迪克式毫米波辐射计，并进行了成像实验.为了解决毫米波被动成像中由于天线孔径尺寸和衍射受限所带来的固有空间分辨率低的问题，采用了一种改进的最大似然超分辨算法进行频谱外推.实验结果表明该算法有很好的频谱外推能力，对图像分辨率的提高和超分辨性能的改善有明显效果.3mm迪克式辐射计的主要参数如下：中心频率为91.5GHz，带宽为4GHz，温度灵敏度为0.55K，线性度为0.9999.

Abstract

On the basis of studying the principle of passive millimeter wave (PMMW) imaging, a compact 3mm super-heterodyne Dicke-radiometer was developed and the imaging experiment was done. An improved maximum-likelihood (IML) super-resolution algorithm was proposed in order to solve the inherent problem of poor resolution imaging, which was caused by limited aperture dimensions and the consequent diffraction limit. Experiment results indicate that the algorithm is able to complete spectral extrapolation, and enhance super-resolution performance and spatial resolution. The primary parameters of the 3mm band radiometer are given as follow： the center frequency is 91.5 GHz, the system band-width is 4GHz, the sensitivity of temperature is 0.55K and the linearity is 0.9999.

参考文献

[1] WANG Hua-L,i LI Xing-Guo, PENG Shu-Sheng, et al. Passivemillimeter-wave imaging techniques[J].J. Infrared Millim. Waves(王华力,李兴国,彭树生,等.被动毫米波成像技术.红外与毫米波学报), 1997,16(4): 297—302.

[2] ZHANG Guang-Feng, ZHANG Zu-Yin, GUO We.i Research on 3mm band radiometric imaging[J].J. Infrared Millim. Waves(张光锋,张祖荫,郭伟. 3mm波段辐射成像研究,红外与毫米波学报), 2005,24(6): 422—426.

[3] . Passivemillimeterwave imaging[J]. IEEEMicrowavemagazine, 2003, 4(3): 39.

[4] SHIXiang, LOU Guo-We,i LIXing-Guo,et al.Modelling and calculating ofmillimeter wave radiant temperature for armored target[J].J. Infrared Millim. Waves(时翔,娄国伟,李兴国,等.装甲目标毫米波辐射温度的建模与计算.红外与毫米波学), 2007,26(1): 43—46.

[5] . Large-aperture passive millimeter wave pushbroom camera[J]. Proc. of SPIE, 2001, 4373: 1.

[6] ZHANG Guang-Feng, LI Xing-Guo, LOU Guo-We.i Research on passivemmw imaging based on an alternating current radiometer[J].J. Infrared Millim. Waves(张光锋,李兴国,娄国伟.基于交流辐射计的被动毫米波成像研究.红外与毫米波学报), 2007,26(6): 461—464.

[7] PENG Shu-Sheng, WU L,i YIN Xing-Hu,iet al.Characteristic parametersmeasurement of a 3mm band radiometer [J].J. Infrared Millim.Waves(彭树生,吴礼,殷兴辉,等. 3mm波段辐射计特性参数的测试.红外与毫米波学报), 2007,26(2): 129—132.

[8] . A dual-mode imaging millimeter wave radar/radiometer for volcanological surveying[J]. IGARSS04Proceedings ofIEEE on Geosience and Remote Sensing Symposium, 2004, 5: 3299.

[9] . Description of a poisson imagery super-resolution algorithm[J]. Astronomical Data Analysis Software and Systems, 1992, 25: 196.

李良超, 杨建宇, 姜正茂, 郑鑫. 3mm辐射成像研究[J]. 红外与毫米波学报, 2009, 28(1): 11. Liang-Chao, YANG Jian-Yu, JIANG Zheng-Mao, ZHENG Xin. RESEARCH ON 3 mm RADIOMETRIC IMAGINGLI[J]. Journal of Infrared and Millimeter Waves, 2009, 28(1): 11.

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