太赫兹雷达技术

王宏强; 邓彬; 秦玉亮

doi:10.12000/JR17107

太赫兹雷达技术

DOI: 10.12000/JR17107

国防科技大学电子科学学院长沙 410073

基金项目: 国家部委基金

详细信息

作者简介:
王宏强(1970–)，男，出生于陕西省宝鸡市，国防科技大学电子科学学院研究员，973项目技术首席、装发部目标及其环境特性专业组专家、军委科技委国防科技创新特区主题专家、原军口863专家、中国兵工学会太赫兹应用技术专业委员会委员；入选国家“百千万”人才工程，并被授予“有突出贡献中青年专家”荣誉称号；入选教育部新世纪优秀人才支持计划、军队高层次科技创新人才工程——学科拔尖人才培养对象；获中国科协“求是杰出青年奖——实用工程奖”。获国家技术发明二等奖1项、国家科技进步二等奖2项、军队科技进步一等奖4项、军队科技进步二等奖1项。从事太赫兹技术、雷达目标识别、雷达信号处理等研究

邓　彬(1981–)，男，出生于山东省邹城市，国防科技大学电子科学学院副研究员，从事合成孔径雷达、太赫兹雷达微动与成像等研究

秦玉亮(1980–)，男，生于山东省潍坊市，国防科技大学电子科学学院副研究员，主要从事太赫兹雷达、雷达关联成像和电磁涡旋方面研究

通讯作者:
邓彬 dengbin@nudt.edu.cn

中图分类号: TN95
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出版历程
- 收稿日期: 2017-11-20
- 修回日期: 2017-12-29
- 网络出版日期: 2018-02-28

Review of Terahertz Radar Technology

College of Electronic Science, National University of Defense Technology, Changsha 410073, China

Funds: The National Ministries Foundation

摘要

摘要: 太赫兹雷达具有带宽大、分辨率高、多普勒敏感、抗干扰等独特优势，是目标探测领域的重要发展方向。该文首先回顾和介绍了电子学和光学太赫兹雷达系统历史、现状和最新进展，其次对太赫兹雷达目标特性从机理、计算、测量3个方面进行了梳理和概要介绍，同时阐述了太赫兹ISAR、SAR、阵列和孔径编码成像研究状况，简要介绍了太赫兹雷达在预警探测、安检反恐等领域的应用，最后对太赫兹雷达技术的发展方向进行了展望。
- 太赫兹雷达 /
- 散射特性 /
- 雷达散射截面(RCS) /
- 成像
Abstract: Terahertz radar has unique advantages, including large bandwidth, high resolution, Doppler sensitivity, and anti-interference; it is a significant development in the field of target detection. Herein, the history of electronic and optical terahertz radar systems is introduced, and the current situation and latest progress pertaining to these systems are reviewed. The target characteristics of terahertz radar are summarized based on its mechanism, calculation, and measurement. Moreover, the current research status of terahertz SAR, ISAR, array, and aperture encoding imaging are discussed, and the applications of terahertz radar, such as early warning detection and security anti-terrorism systems, are briefly introduced. Finally, the development direction of terahertz radar technology is forecast.
- Terahertz radar /
- Scattering characteristics /
- Radar Cross Section (RCS) /
- Imaging

HTML全文

图 1 太赫兹波产生辐射方式

Figure 1. The generating ways of terahertz wave

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图 2 线阵扫描合成孔径雷达

Figure 2. The linear array scanning SAR

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图 3 225 GHz脉冲雷达与测量结果

Figure 3. The 225 GHz pulse radar and tracked result

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图 4 670 GHz雷达框图与成像结果

Figure 4. The 670 GHz radar and the imaging result

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图 5 太赫兹雷达芯片

Figure 5. The terahertz radar on chip

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图 6 2.4 THz成像雷达框图与成像结果

Figure 6. The 2.4 THz radar and the imaging result

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图 7 太赫兹雷达系统发展历程

Figure 7. The developing process of terahertz radar

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图 8 T5M3目标的RCS测量结果与X-Patch计算结果比较

Figure 8. The RCS comparing results of T5M3 and X-Patch

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图 9 STL实验室对3份不同粗糙样品的散射系数测量结果

Figure 9. The dissipation coefficient of three rough samples

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图 10 仿真数据与测量数据的重建图像比较

Figure 10. The reconstructed image of the simulation and the experiment

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图 11 频率0.6 THz时T64坦克2维多普勒成像

Figure 11. The two-dimensional Doppler imaging of T64 based on 0.6 THz

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图 12 粗糙立方体模型及成像结果

Figure 12. The model and imaging of rough cube

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图 13 太赫兹雷达成像方式

Figure 13. The imaging ways of terahertz radar

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图 14 140 m距离的自行车目标转台成像

Figure 14. The turntable imaging of bicycle with 140 m

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图 15 进动弹头目标ISAR成像结果

Figure 15. The imaging result of precession warhead

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图 16 MIRANDA-300雷达车载成像结果

Figure 16. The vehicle imaging of MIRANDA-300 radar

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图 17 国防科技大学车载THz-SAR系统及成像结果

Figure 17. The vehicle THz-SAR system and imaging of NUDT

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图 18 TeraSCREEN项目拟采用的阵列构型

Figure 18. The intending array configuration of TeraSCREEN

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图 19 0.2 THz雷达携带手枪人体模型成像结果

Figure 19. The imaging of the people carried pistol by 0.2 THz

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图 20 工物院340 GHz-MIMO成像系统实物图与成像结果

Figure 20. The picture and imaging of 340 GHz-MIMO of industrial institute

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图 21 英国伯明翰大学实验系统及结果

Figure 21. The experimental system and result of University of Birmingham

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表 1 220 GHz电子学器件发展水平(2017年)

Table 1. The development status of 220 GHz electronic devices (2017)

器件类型		国外	国内
固态器件	倍频器	效率>20%，功率>100 mW	效率约10%，功率约20 mW
	固态功放	功率约180 mW	功率约10 mW，带宽6 GHz
	分谐波混频器	噪声系数7 dB，变频损耗约6 dB	噪声系数6 dB，变频损耗约7 dB
	低噪声放大器	噪声系数约5 dB，增益约17 dB	无
电真空器件	行波管功放	功率约60 W，增益约30 dB，带宽>15 GHz	功率约1.2 W，增益约20 dB，带宽>10 GHz

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参考文献(100)

[1]	Nichols E F and Tear J D. Joining the infrared and electric wave spectra[J]. Astrophysics Journal, 1925, 61: 17–37. DOI: 10.1086/142871
[2]	Wiltse J C. History of millimeter and submillimeter waves[J]. IEEE Transactions on Microwave Theory and Techniques, 1984, 32(9): 1118–1127. DOI: 10.1109/TMTT.1984.1132823
[3]	Mcintosh R E, Narayanan R M, Mead J B, et al. Design and performance of a 215 GHz pulsed radar system[J]. IEEE Transactions on Microwave Theory and Techniques, 1988, 36(6): 994–1001. DOI: 10.1109/22.3624
[4]	Siegel P H. Terahertz technology[J]. IEEE Transactions on Microwave Theory and Techniques, 2002, 50(3): 910–928. DOI: 10.1109/22.989974
[5]	Horiuchi N. Terahertz technology: Endless applications[J]. Nature Photonics, 2010, 4(3): 140. DOI: 10.1038/nphoton.2010.16
[6]	Albrecht J D. THz electronics: Transistors, TMICs, and high power amplifiers[C]. Proceedings of 2011 International Conference on Compound Semiconductor Manufacturing Technology, California, USA, 2011.
[7]	Wallace H B. Video synthetic aperture radar (ViSAR)[R]. Arlington: DARPA, 2012.
[8]	Advanced scanning technology for imaging radars (ASTIR)[R]. Arlington: DARPA, 2014.
[9]	Alexander N E, Alderman B, Allona F, et al.. Terascreen: Multi-frequency multi-mode terahertz screening for border checks[C]. Proceedings of the SPIE 9078, Passive and Active Millimeter-Wave Imaging XVII SPIE, Baltimore, Maryland, United States, 2014: 907802.
[10]	Appleby R and Wallace H B. Standoff detection of weapons and contraband in the 100 GHz to 1 THz region[J]. IEEE Transactions on Antennas and Propagation, 2007, 55(11): 2944–2956. DOI: 10.1109/TAP.2007.908543
[11]	Di Carlo A, Paoloni C, Brunetti F, et al.. The European project OPTHER for the development of a THz tube amplifier[C]. Proceedings of IEEE International Vacuum Electronics Conference, Rome, 2009: 100–101.
[12]	Nagatsuma T. Exploring sub-terahertz waves for future wireless communications[C]. Proceedings of the Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, Shanghai, 2006: 4.
[13]	Crowe T W, Hesler J L, Bishop W L, et al.. Integrated GaAs diode technology for millimeter and submillimeter-wave components and systems[C]. MRS Spring Meeting, San Francisco, 2000: 631.
[14]	Crowe T W, Bishop W L, Porterfield D W, et al. Opening the terahertz window with integrated diode circuits[J]. IEEE Journal of Solid-State Circuits, 2005, 40(10): 2104–2110. DOI: 10.1109/JSSC.2005.854599
[15]	Cooper K B, Dengler R J, Chattopadhyay G, et al. A high-resolution imaging radar at 580 GHz[J]. IEEE Microwave and Wireless Components Letters, 2008, 18(1): 64–66. DOI: 10.1109/LMWC.2007.912049
[16]	Essen H, Hagelen M, Johannes W, et al.. High resolution millimetre wave measurement radars for ground based SAR and ISAR imaging[C]. Proceedings of IEEE Radar Conference, Rome, 2008: 1–5.
[17]	Essen H, Wahlen A, Sommer R, et al. High-bandwidth 220 GHz experimental radar[J]. Electronics Letters, 2007, 43(20): 1114–1116. DOI: 10.1049/el:20071865
[18]	Stanko S, Palm S, Sommer R, et al.. Millimeter resolution SAR imaging of infrastructure in the lower THz region using MIRANDA-300[C]. Proceedings of the 2016 46th European Microwave Conference, London, 2016: 1505–1508. DOI: 10.1109/EuMC.2016.7824641.
[19]	Dahlbäck R, Rubaek T, Bryllert T, et al.. A 340 GHz CW non-linear imaging system[C]. Proceedings of the 35th International Conference on Infrared Millimeter and Terahertz Waves, Rome, 2010: 1–2.
[20]	Cheng B B, Jiang G, Wang C, et al. Real-time imaging with a 140 GHz inverse synthetic aperture radar[J]. IEEE Transactions on Terahertz Science and Technology, 2013, 3(5): 594–605. DOI: 10.1109/TTHZ.2013.2268317
[21]	成彬彬, 江舸, 陈鹏, 等. 0.67 THz高分辨力成像雷达[J]. 太赫兹科学与电子信息学报, 2013, 11(1): 7–11 Cheng Bin-bin, Jiang Ge, Chen Peng, et al. 0.67 THz high resolution imaging radar[J]. Journal of Terahertz Science and Electronic Information Technology, 2013, 11(1): 7–11
[22]	Gu S M, Li C, Gao X, et al. Three-dimensional image reconstruction of targets under the illumination of terahertz Gaussian beam-theory and experiment[J]. IEEE Transactions on Geoscience and Remote Sensing, 2013, 51(4): 2241–2249. DOI: 10.1109/TGRS.2012.2209892
[23]	Cooper K B. Performance of a 340 GHz radar transceiver array for standoff security imaging[C]. Proceedings of the 2014 39th International Conference on Infrared, Millimeter, and Terahertz Waves, Tucson, AZ, 2014. DOI: 10.1109/IRMMW-THz.2014.6956020.
[24]	Friederich F, von Spiegel W, Bauer M, et al.. THz Active Imaging Systems with Real-Time Capabilities[M]//Corsi C and Sizov F. THz and Security Applications. Dordrecht, Netherlands: Springer, 2014: 183–200.
[25]	Moll J, Schops P, and Krozer V. Towards three-dimensional millimeter-wave radar with the bistatic fast-factorized back-projection algorithm-potential and limitations[J]. IEEE Transactions on Terahertz Science and Technology, 2012, 2(4): 432–440. DOI: 10.1109/TTHZ.2012.2199113
[26]	Keil A, Hoyer T, Peuser J, et al.. All-electronic 3D THz synthetic reconstruction imaging system[C]. Proceedings of the 2011 36th International Conference on Infrared, Millimeter and Terahertz Waves, Houston, TX, 2011: 1–2.
[27]	Mcmillan R W, Trussell C W, Bohlander R A, et al. An experimental 225 GHz pulsed coherent radar[J]. IEEE Transactions on Microwave Theory and Techniques, 1991, 39(3): 555–562. DOI: 10.1109/22.75300
[28]	Chattopadhayay G, Lee C, Jung C, et al.. Integrated arrays on silicon at terahertz frequencies[C]. Proceedings of 2011 IEEE International Symposium on Antennas and Propagation, Spokane, WA, 2011: 3007–3010.
[29]	Cooper K B, Dengler R J, Llombart N, et al. Penetrating 3-D imaging at 4-and 25-m range using a submillimeter-wave radar[J]. IEEE Transactions on Microwave Theory and Techniques, 2008, 56(12): 2771–2778. DOI: 10.1109/TMTT.2008.2007081
[30]	Cooper K B, Dengler R J, Llombart N, et al. THz imaging radar for standoff personnel screening[J]. IEEE Transactions on Terahertz Science and Technology, 2011, 1(1): 169–182. DOI: 10.1109/TTHZ.2011.2159556
[31]	Llombart N, Cooper K B, Dengler R J, et al. Time-delay multiplexing of two beams in a terahertz imaging radar[J]. IEEE Transactions on Microwave Theory and Techniques, 2010, 58(7): 1999–2007. DOI: 10.1109/TMTT.2010.2050106
[32]	Furqan M, Ahmed F, Feger R, et al.. A 120-GHz wideband FMCW radar demonstrator based on a fully-integrated sige transceiver with antenna-in-package[C]. Proceedings of 2016 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility, San Diego, CA, 2016: 1–4.
[33]	Jahn M, Hamidipour A, Tong Z, et al.. A 120-GHz FMCW radar frontend demonstrator based on a SiGe chipset[C]. Proceedings of the 2011 41st European Microwave Conference, Manchester, 2011: 309–315.
[34]	Göttel B, Pauli M, Gulan H, et al.. Miniaturized 122 GHz short range radar sensor with antenna-in-package (AiP) and dielectric lens[C]. Proceedings of the 2014 8th European Conference on Antennas and Propagation, The Hague, 2014: 709–713.
[35]	Yuan S and Schumacher H. 110–140-GHz single-chip reconfigurable radar frontend with on-chip antenna[C]. Proceedings of 2015 IEEE Bipolar/BiCMOS Circuits and Technology Meeting-BCTM, Boston, MA, 2015: 48–51.
[36]	Jaeschke T, Bredendiek C, and Pohl N. A 240 GHz ultra-wideband FMCW radar system with on-chip antennas for high resolution radar imaging[C]. Proceedings of 2013 IEEE MTT-S International Microwave Symposium Digest, Seattle, WA, 2014: 1–4.
[37]	Statnikov K, Sarmah N, Grzyb J, et al.. A 240 GHz circular polarized FMCW radar based on a sige transceiver with a lens-integrated on-chip antenna[C]. Proceedings of the 2014 11th European Radar Conference, Rome, 2014: 447–450.
[38]	Goyette T M, Dickinson J C, Waldman J, et al.. 1.56-THz compact radar range for w-band imagery of scale-model tactical targets[C]. Proceedings of the SPIE 4053, Algorithms for Synthetic Aperture Radar Imagery VII, Orlando, FL, United States, 2000: 615–622.
[39]	Coulombe M J, Horgan T, Waldman J, et al.. A 160 GHz polarimetric compact range for scale model RCS measurements[C]. Proceedings of Antenna Measurements and Techniques Association Proceedings, Seattle, WA, 2007.
[40]	DeMartinis G B, Coulombe M J, Horgan T M, et al.. A 240 GHz polarimetric compact range for scale model RCS measurements[J]. Japanese Journal of Clinical Medicine, 2010, 28.
[41]	Coulombe M J, Ferdinand T, Horgan T, et al.. A 585 GHz compact range for scale model RCS measurements[C]. Proceedings of Antenna Measurements and Techniques Association, Dallas, TX, 1993.
[42]	Goyette T M, Dickinson J C, Gorveatt J W, et al.. X-band ISAR imagery of scale-model tactical targets using a wide-bandwidth 350-GHz compact range[C]. Proceedings of the SPIE 5427, Algorithms for Synthetic Aperture Radar Imagery XI, Orlando, Florida, United States, 2004: 227–236.
[43]	梁达川, 魏明贵, 谷建强, 等. 缩比模型的宽频时域太赫兹雷达散射截面(RCS)研究[J]. 物理学报, 2014, 63(21): 85–94. DOI: 10.7498/aps.63.214102 Liang Da-chuan, Wei Ming-gui, Gu Jian-qiang, et al. Broad-band time domain terahertz radar cross-section research in scale models[J]. Acta Physica Sinica, 2014, 63(21): 85–94. DOI: 10.7498/aps.63.214102
[44]	Danylov A A, Goyette T M, Waldman J, et al.. Coherent imaging at 2.4 THz with a CW quantum cascade laser transmitter[C]. Proceedings of the SPIE 7601, Terahertz Technology and Applications III, San Francisco, California, United States, 2010, 7601: 760105.
[45]	Danylov A A, Goyette T M, Waldman J, et al. Terahertz inverse synthetic aperture radar (ISAR) imaging with a quantum cascade laser transmitter[J]. Optics Express, 2010, 18(15): 16264–16272. DOI: 10.1364/OE.18.016264
[46]	Lloyd-Hughes J and Jeon T I. A review of the terahertz conductivity of bulk and nano-materials[J]. Journal of Infrared,Millimeter,and Terahertz Waves, 2012, 33(9): 871–925. DOI: 10.1007/s10762-012-9905-y
[47]	Grosso G and Parravicini G P. Solid State Physics[M]. Second Edition, New York: Academic Press, 2014.
[48]	Li L S and Yin H C. Fano-like resonance in cylinders including nonlocal effects[J]. Chinese Physics Letters, 2014, 31(8): 087302. DOI: 10.1088/0256-307X/31/8/087302
[49]	Andersh D J, Hazlett M, Lee S W, et al. Xpatch: A high frequency electromagnetic-scattering prediction code and environment for complex 3D objects[J]. Science, 1994, 286(5448): 2249–2250.
[50]	Goyette T M, Dickinson J C, Waldman J, et al.. Fully polarimetric W-band ISAR imagery of scale-model tactical targets using a 1.56-THz compact range[C]. Proceedings of the SPIE 4382, Algorithms for Synthetic Aperture Radar Imagery VIII, Orlando, FL, United States, 2001: 229–240.
[51]	Jagannathan A, Gatesman A J, and Giles R H. Characterization of roughness parameters of metallic surfaces using terahertz reflection spectra[J]. Optics Letters, 2009, 34(13): 1927–1929. DOI: 10.1364/OL.34.001927
[52]	Zurk L M, Orlowski B, Sundberg G, et al.. Electromagnetic scattering calculations for terahertz sensing[C]. Proceedings of the PSIE 6472, Terahertz and Gigahertz Electronics and Photonics VI, San Jose, California, United States, 2007: 64720A.
[53]	Jansen C, Priebe S, Moller C, et al. Diffuse scattering from rough surfaces in THz communication channels[J]. IEEE Transactions on Terahertz Science and Technology, 2011, 1(2): 462–472. DOI: 10.1109/TTHZ.2011.2153610
[54]	Pätzold M, Kahl M, Klinkert T, et al. Simulation and data-processing framework for hybrid synthetic aperture THz systems including THz-scattering[J]. IEEE Transactions on Terahertz Science and Technology, 2013, 3(5): 625–634. DOI: 10.1109/TTHZ.2013.2274698
[55]	Li Z, Cui T J, Zhong X J, et al. Electromagnetic scattering characteristics of PEC targets in the terahertz regime[J]. IEEE Antennas and Propagation Magazine, 2009, 51(1): 39–50. DOI: 10.1109/MAP.2009.4939018
[56]	Wang R J, Wang H Q, Deng B, et al. High-resolution terahertz radar imaging based on electromagnetic calculation data[J]. Journal of Infrared and Millimeter Waves, 2014, 33(6): 577–583.
[57]	Li C C, Deng B, Qin Y L, et al.. RCS prediction of planar slotted waveguide array antenna in terahertz regime[C]. Proceedings of the 2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves, Wollongong, NSW, 2012: 1–2.
[58]	李纯纯, 邓彬, 王宏强, 等. 抛物面天线目标太赫兹雷达散射特性[J]. 激光与红外, 2013, 43(6): 671–677. DOI: 10.3969/j.issn.1001-5078.2013.06.017 Li Chun-chun, Deng Bin, Wang Hong-qiang, et al. Radar scattering characteristics of parabolic reflector antenna targets in the terahertz regime[J]. Laser&Infrared, 2013, 43(6): 671–677. DOI: 10.3969/j.issn.1001-5078.2013.06.017
[59]	高敬坤, 王瑞君, 邓彬, 等. THz频段粗糙导体圆锥的极化成像特性[J]. 太赫兹科学与电子信息学报, 2015, 13(3): 401–408. DOI: 10.11805/TKYDA20150310.401 Gao Jing-kun, Wang Rui-jun, Deng Bin, et al. Characteristics of polarized imaging of a conducting cone with surface roughness at Terahertz frequencies[J]. Journal of Terahertz Science and Electronic Information Technology, 2015, 13(3): 401–408. DOI: 10.11805/TKYDA20150310.401
[60]	王瑞君, 邓彬, 王宏强, 等. 不同表面结构特征圆柱导体的太赫兹散射特性[J]. 强激光与粒子束, 2013, 25(6): 1549–1554. DOI: 10.3788/HPLPB20132506.1549 Wang Rui-jun, Deng Bin, Wang Hong-qiang, et al. Scattering characteristics for cylindrical conductor with different surface micro-structure in terahertz regime[J]. High Power Laser and Particle Beams, 2013, 25(6): 1549–1554. DOI: 10.3788/HPLPB20132506.1549
[61]	Gao J K, Wang R J, Deng B, et al. Electromagnetic scattering characteristics of rough PEC targets in the terahertz regime[J]. IEEE Antennas and Wireless Propagation Letters, 2016, 16: 975–978.
[62]	王瑞君, 邓彬, 王宏强, 等. 太赫兹与远红外频段下铝质目标电磁特性与计算[J]. 物理学报, 2014, 63(13): 134102. DOI: 10.7498/aps.63.134102 Wang Rui-jun, Deng Bin, Wang Hong-qiang, et al. Electromagnetic scattering characteristic of aluminous targets in the terahertz and far infrared region[J]. Acta Physica Sinica, 2014, 63(13): 134102. DOI: 10.7498/aps.63.134102
[63]	Wang H Q, Wang R J, Deng B, et al. Compressed sensing of terahertz radar azimuth-elevation imaging[J]. Journal of Electronic Imaging, 2015, 24(1): 13035. DOI: 10.1117/1.JEI.24.1.013035
[64]	Li H Y, Li Q, Xia Z W, et al. Influence of Gaussian beam on terahertz radar cross section of a conducting sphere[J]. Journal of Infrared,Millimeter,and Terahertz Waves, 2013, 34(1): 88–96. DOI: 10.1007/s10762-012-9950-6
[65]	Li H Y, Li Q, She J Y, et al. Radar cross section of a semicircular bossresearch into influence of Gaussian beam on terahertz radar cross section of a semicircular boss[J]. Journal of Infrared,Millimeter,and Terahertz Waves, 2013, 34(7/8): 480–487.
[66]	Li H Y, Li Q, Xue K, et al. Research into influence of Gaussian beam on terahertz radar cross section of a conducting cylinder[J]. Journal of Infrared,Millimeter,and Terahertz Waves, 2013, 34(3/4): 289–298.
[67]	Liu H B, Zhong H, Karpowicz N, et al. Terahertz spectroscopy and imaging for defense and security applications[J]. Proceedings of the IEEE, 2007, 95(8): 1514–1527. DOI: 10.1109/JPROC.2007.898903
[68]	Henry S C, Schecklman S, Kniffin G P, et al.. Measurement and modeling of rough surface effects on terahertz spectroscopy[C]. Proceedings of the SPIE 7601, Terahertz Technology and Applications III, San Francisco, California, United States, 2010: 760108.
[69]	Arbab M H, Winebrenner D P, Thorsos E I, et al. Retrieval of terahertz spectroscopic signatures in the presence of rough surface scattering using wavelet methods[J]. Applied Physics Letters, 2010, 97(18): 181903. DOI: 10.1063/1.3507384
[70]	Caris M, Stanko S, Palm S, et al.. 300 GHz radar for high resolution SAR and ISAR applications[C]. Proceedings of the 2015 16th International Radar Symposium, Dresden, 2015: 577–580.
[71]	Palm S, Sommer R, Caris M, et al.. Ultra-high resolution SAR in lower terahertz domain for applications in mobile mapping[C]. Proceedings of 2016 German Microwave Conference, Bochum, 2016: 205–208.
[72]	Zhang B, Pi Y M, and Li J. Terahertz imaging radar with inverse aperture synthesis techniques: System structure, signal processing, and experiment results[J]. IEEE Sensors Journal, 2015, 15(1): 290–299. DOI: 10.1109/JSEN.2014.2342495
[73]	Demartinis G B, Goyette T M, Coulombe M J, et al.. A 1.56 THz spot scanning radar range for fully polarimetric w-band scale model measurements[R]. University of Massachusetts Lowell, 1999.
[74]	Wang R J, Deng B, Qin Y L, et al. Bistatic terahertz radar azimuth-elevation imaging based on compressed sensing[J]. IEEE Transactions on Terahertz Science and Technology, 2014, 6(4): 702–713.
[75]	Yang Q, Deng B, Wang H Q, et al. Experimental research on imaging of precession targets with THz radar[J]. Electronics Letters, 2016, 52(25): 2059–2061. DOI: 10.1049/el.2016.3494
[76]	Yang Q, Deng B, Wang H Q, et al.. Research on imaging of precession targets based on range-instantaneous Doppler in the terahertz band[C]. Proceedings of 2017 International Workshop on Electromagnetics: Applications and Student Innovation Competition, London UK, 2017: 14–15.
[77]	李晋, 皮亦鸣, 杨晓波. 基于回旋管的星载太赫兹成像雷达设计与仿真[J]. 电子测量与仪器学报, 2010, 24(10): 892–898. DOI: 10.3724/SP.J.1187.2010.00892 Li Jin, Pi Yi-ming, and Yang Xiao-bo. Spaceborne imaging radar system based on gyrotron in terahertz band design and simulation[J]. Journal of Electronic Measurement and Instrument, 2010, 24(10): 892–898. DOI: 10.3724/SP.J.1187.2010.00892
[78]	李晋. 太赫兹雷达系统总体与信号处理方法研究[D]. [博士论文], 电子科技大学, 2010. Li Jin. Research on terahertz radar system and its signal processing[D]. [Ph.D. dissertation], University of Electronic Science and Technology of China, 2010.
[79]	林华. 无人机载太赫兹合成孔径雷达成像分析与仿真[J]. 信息与电子工程, 2010, 8(4): 373–377, 382. DOI: 10.3969/j.issn.1672-2892.2010.04.001 Lin Hua. Analysis and simulation of UAV terahertz wave synthetic aperture radar imaging[J]. Information and Electronic Engineering, 2010, 8(4): 373–377, 382. DOI: 10.3969/j.issn.1672-2892.2010.04.001
[80]	Darpa’s ViSAR radar completes testing[EB/OL]. http://www.abovetopsecret.com/forum/thread/1186879/pg1?from=singlemessage#lastPost, 2017.
[81]	沈斌. THz频段SAR成像及微多普勒目标检测与分离技术研究[D]. [硕士论文], 电子科技大学, 2008. Shen Bin. THz wave SAR imaging and micro-Doppler target recognization[D]. [Master dissertation], University of Electronic Science and Technology of China, 2008.
[82]	李晋, 皮亦鸣, 杨晓波. 太赫兹频段目标微多普勒信号特征分析[J]. 电子测量与仪器学报, 2009, 23(10): 25–30 Li Jin, Pi Yi-ming, and Yang Xiao-bo. Analysis of micro-Doppler effect in Terahertz band[J]. Journal of Electronic Measurement and Instrument, 2009, 23(10): 25–30
[83]	李晋, 皮亦鸣, 杨晓波. 基于微动特征提取的太赫兹雷达目标检测算法研究[J]. 电子测量与仪器学报, 2010, 24(9): 803–807. DOI: 10.3724/SP.J.1187.2010.00803 Li Jin, Pi Yi-ming, and Yang Xiao-bo. Research on terahertz radar target detection algorithm based on the extraction of micro motion feature[J]. Journal of Electronic Measurement and Instrument, 2010, 24(9): 803–807. DOI: 10.3724/SP.J.1187.2010.00803
[84]	王照法. THz频段SAR成像算法研究[D]. [硕士论文], 哈尔滨工业大学, 2015. Wang Zhao-fa. Study of imaging algorithm of synthetic aperture radar in THz band[D]. [Master dissertation], Harbin Institute of Technology, 2015.
[85]	Yang Q, Qin Y L, Zhang K, et al. Experimental research on vehicle-borne SAR imaging with THz radar[J]. Microwave and Optical Technology Letters, 2017, 59(8): 2048–2052. DOI: 10.1002/mop.v59.8
[86]	Gu S M, Li C, Gao X, et al. Terahertz aperture synthesized imaging with fan-beam scanning for personnel screening[J]. IEEE Transactions on Microwave Theory and Techniques, 2012, 60(12): 3877–3885. DOI: 10.1109/TMTT.2012.2221738
[87]	Liu W, Li C, Sun Z Y, et al. Three-dimensional sparse image reconstruction for terahertz surface layer holography with random step frequency[J]. Optics Letters, 2015, 40(14): 3384–3387. DOI: 10.1364/OL.40.003384
[88]	Sun Z Y, Li C, Gao X, et al. Minimum-entropy-based adaptive focusing algorithm for image reconstruction of terahertz single-frequency holography with improved depth of focus[J]. IEEE Transactions on Geoscience and Remote Sensing, 2015, 53(1): 519–526. DOI: 10.1109/TGRS.2014.2325057
[89]	崔振茂, 高敬坤, 陆彬, 等. 340 GHz稀疏MIMO阵列实时3-D成像系统[J]. 红外与毫米波学报, 2017, 36(1): 102–106. DOI: 10.11972/j.issn.1001-9014.2017.01.018 Cui Zhen-mao, Gao Jing-kun, Lu Bin, et al. Real time 3D imaging system based on sparse MIMO array at 340 GHz[J]. Journal of Infrared and Millimeter Waves, 2017, 36(1): 102–106. DOI: 10.11972/j.issn.1001-9014.2017.01.018
[90]	Li D Z, Li X, Qin Y L, et al. Radar coincidence imaging: An instantaneous imaging technique with stochastic signals[J]. IEEE Transactions on Geoscience and Remote Sensing, 2014, 52(4): 2261–2277. DOI: 10.1109/TGRS.2013.2258929
[91]	Shams M I B, Jiang Z, Qayyum J, et al. Characterization of terahertz antennas using photoinduced coded-aperture imaging[J]. Microwave and Optical Technology Letters, 2015, 57(5): 1180–1184. DOI: 10.1002/mop.29051
[92]	Kannegulla A, Jiang Z, Rahman S M, et al. Coded-aperture imaging using photo-induced reconfigurable aperture arrays for mapping terahertz beams[J]. IEEE Transactions on Terahertz Science and Technology, 2014, 4(3): 321–327. DOI: 10.1109/TTHZ.2014.2307163
[93]	Duan P, Wang Y Y, Xu D G, et al. Single pixel imaging with tunable terahertz parametric oscillator[J]. Applied Optics, 2016, 55(13): 3670–3675. DOI: 10.1364/AO.55.003670
[94]	Chen S, Luo C G, Deng B, et al. Study on coding strategies for radar coded-aperture imaging in terahertz band[J]. Journal of Electronic Imaging, 2017, 26(5): 053022.
[95]	姜兴, 刘耀山, 孙逢圆. 24 GHz车载防撞雷达射频前端设计[J]. 微波学报, 2012, 38(S1): 179–182 Jiang Xing, Liu Yao-shan, and Sun Feng-yuan. 24 GHz RF front-end design of automotive collision avoidance radar[J]. Journal of Microwaves, 2012, 38(S1): 179–182
[96]	李健. 24 GHz调频连续波雷达信号处理技术研究[D]. [硕士论文], 南京理工大学, 2017. Li Jian. Research on signal processing of 24 GHz continuous wave radar[D]. [Master dissertation], Nanjing University of Science and Technology, 2017.
[97]	张慧, 余英瑞, 徐俊, 等. 77 GHz车载毫米波中远距雷达天线阵列设计[J]. 强激光与粒子束, 2017, 29(10): 48–51. DOI: 10.11884/HPLPB201729.170275 Zhang Hui, Yu Ying-rui, Xu Jun, et al. Design of 77 GHz vehicle millimeter long-and medium-range radar antenna array[J]. High Power Laser and Particle Beams, 2017, 29(10): 48–51. DOI: 10.11884/HPLPB201729.170275
[98]	黄源水. 基于毫米波雷达的前向防撞报警系统[J]. 机电技术, 2017(1): 80–82. DOI: 10.19508/j.cnki.1672-4801.2017.01.024 Huang Yuan-shui. Forward collision warning system based on millimeter wave radar[J]. Mechanical&Electrical Technology, 2017(1): 80–82. DOI: 10.19508/j.cnki.1672-4801.2017.01.024
[99]	鲍迎. 小型化24 GHz FMCW汽车防撞雷达[D]. [硕士论文], 浙江大学, 2011. Bao Ying. Compact 24 GHz FMCW automotive anti-collision radar[D]. [Master dissertation], Zhejiang University, 2011.
[100]	王泓然. 太赫兹频段云粒子散射建模及雷达系统分析[D]. [硕士论文], 北京理工大学, 2015. Wang Hong-ran. The scattering modeling of cloud particles and the system analysis of a radar in terahertz band[D]. [Master dissertation], Beijing Institute of Technology, 2015.