相位补偿算法对提高太赫兹雷达距离像分辨率的研究

梁美彦; 张存林

doi:10.7498/aps.63.148701

摘要

介绍了0.2 THz频率步进雷达系统以及获得一维距离像的方法，并利用0.2 THz雷达对角反射器进行距离像分辨率实验，分析了频率步进信号相位不一致对一维距离像以及分辨率的影响，提出了回波相位补偿的方法. 经过相位补偿后，目标距离像分辨率和信噪比都显著提高，分辨率达到了厘米量级. 仿真和实验结果表明，宽带太赫兹频率步进雷达经过相位补偿，可以对目标进行高分辨率成像，从而为太赫兹雷达二维和三维成像奠定了基础.

关键词:

Abstract

The paper describes the principle of 0.2 THz stepped-frequency radar system which is utilized to achieve a one-dimensional range profile and range resolution. Terahertz (THz) stepped frequency radar is more susceptible to the phase error which will cause the spread and shift of range profile, thus affecting the quality of the high resolution range profile and signal-to-noise ratio. Therefore, a method of phase compensation is proposed to improve the range resolution. After phase compensation, the resolution and signal-to-noise ratio are improved remarkably. The range resolution can reach centimeter scale. Experimental and simulation results indicate that THz stepped frequency radar can reach high resolution range profile with the phase compensation method, which provides a foundation for further research on two-dimensional and three-dimensional image in the THz band.

Keywords:

作者及机构信息

梁美彦^1,2,
张存林^1,2

1.
北京理工大学光电学院, 北京 100081;

2.
太赫兹波谱与成像北京市重点实验室, 太赫兹光电子学教育部重点实验室, 首都师范大学物理系, 北京 100048

基金项目: 国家重点基础研究发展计划（批准号：2007CB310408）资助的课题.

Authors and contacts

1.
School of Opto-Electronic, Beijing Institute of Technology, Beijing 100081, China;

2.
Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Capital Normal University, Beijing 100048, China

Funds: Project supported by the National Basic Research Program of China (Grant No. 2007CB310408).

参考文献

[1]	Cooper K B, Dengler R J, Llombart N, et al. 2011 IEEE Trans. on Terahertz Sci. Technol. 1 169
[2]	Cooper K B, Dengler R J, Llombart N, et al. 2010 Proceedinds of SPIE Orlando, 2010 7671 p76710Y-1
[3]	Dengler R J, Cooper K B, Chattopadhyay G, et al. 2007 IEEE MTT-S International Microwave Symposium Honolulu, 2007 p1371
[4]	Chattopadhyay G, Cooper K B, Dengler R, et al. 2008 19th International Symposium on Space Terahertz Technology Groningen, April 28-30, 2008 p300
[5]	Cooper K B, Dengler R J, Chattopadhyay G, et al. 2008 IEEE Micro. and Wire. Comp. Lett. 18 64
[6]	Essen H, Wahlen A, Sommeretal R, et al. 2007 Electron. Lett. 43 1114
[7]	Mencia-Oliva B, Grajal J, Badolato A 2011 IEEE Radar Conference, May 2011 p389
[8]	Broad Agency Announcement, Video Synthetic Aperture Radar, Strategic Techology Office DARPA-BAA-12-41 United States 2012
[9]	Ding J S, Kahl M, Loffeld O, et al. 2013 IEEE Trans. on Terahertz Sci. Techol. 3 606
[10]	China Academy of Engineering Physics THz Communication and Radar Technology Obtained Significant Breakthrough 2012 (in Chinese) [中国工程物理研究院太赫兹通信和雷达技术取得重要突破 2012 信息与电子工程]
[11]	Gao X, Li C, Gu S M, Fang G Y 2012 IEEE Antennas and Wireless Propaga. Lett. 11 787
[12]	Gao X, Li C, Fang G Y 2013 Chin. Phys. Lett. 30 068401
[13]	Gao X, Li C, Fang G Y 2014 Chin. Phys. B 23 028401
[14]	Zhang B, Pi Y M, Yang X B 2013 IEEE International Conference on Communications, June 2013 p921

施引文献

[1]	Cooper K B, Dengler R J, Llombart N, et al. 2011 IEEE Trans. on Terahertz Sci. Technol. 1 169
[2]	Cooper K B, Dengler R J, Llombart N, et al. 2010 Proceedinds of SPIE Orlando, 2010 7671 p76710Y-1
[3]	Dengler R J, Cooper K B, Chattopadhyay G, et al. 2007 IEEE MTT-S International Microwave Symposium Honolulu, 2007 p1371
[4]	Chattopadhyay G, Cooper K B, Dengler R, et al. 2008 19th International Symposium on Space Terahertz Technology Groningen, April 28-30, 2008 p300
[5]	Cooper K B, Dengler R J, Chattopadhyay G, et al. 2008 IEEE Micro. and Wire. Comp. Lett. 18 64
[6]	Essen H, Wahlen A, Sommeretal R, et al. 2007 Electron. Lett. 43 1114
[7]	Mencia-Oliva B, Grajal J, Badolato A 2011 IEEE Radar Conference, May 2011 p389
[8]	Broad Agency Announcement, Video Synthetic Aperture Radar, Strategic Techology Office DARPA-BAA-12-41 United States 2012
[9]	Ding J S, Kahl M, Loffeld O, et al. 2013 IEEE Trans. on Terahertz Sci. Techol. 3 606
[10]	China Academy of Engineering Physics THz Communication and Radar Technology Obtained Significant Breakthrough 2012 (in Chinese) [中国工程物理研究院太赫兹通信和雷达技术取得重要突破 2012 信息与电子工程]
[11]	Gao X, Li C, Gu S M, Fang G Y 2012 IEEE Antennas and Wireless Propaga. Lett. 11 787
[12]	Gao X, Li C, Fang G Y 2013 Chin. Phys. Lett. 30 068401
[13]	Gao X, Li C, Fang G Y 2014 Chin. Phys. B 23 028401
[14]	Zhang B, Pi Y M, Yang X B 2013 IEEE International Conference on Communications, June 2013 p921

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