Experimental Research on Interferometric Inverse Synthetic Aperture Radar Imaging with Multi-Channel Terahertz Radar System

被引：16
作者：
Zhang, Ye [1 ]
Yang, Qi [1 ]
Deng, Bin [1 ]
Qin, Yuliang [1 ]
Wang, Hongqiang [1 ]
机构：
[1] Natl Univ Def Technol, Coll Elect Sci & Technol, Changsha 410073, Hunan, Peoples R China
来源：
SENSORS | 2019年 / 19卷 / 10期
关键词：
terahertz (THz) radar; interferometric inverse synthetic aperture radar (InISAR); multi-channel radar; THz imaging; ISAR; RECONSTRUCTION; MIGRATION; TARGETS; BEAMS;
D O I：
10.3390/s19102330
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The all solid-state terahertz (THz) radar has obvious miniaturized integration and high resolution imaging advantages compared with conventional microwave radar. In this paper, a 0.22 THz active frequency-modulated pulse radar system with one transmission channel and four receiving channels is presented, and interferometric inverse synthetic aperture radar (InISAR) imaging experiments, which can acquire altitude information of objects, are carried out. In order to acquire high-quality InISAR images, a calibration method is presented to solve the nonlinearity of wideband signal frequency and phase inconsistency of different receiving channels together. Furthermore, to deal with the phase wrapping in InISAR imaging of objects with large scale, a novel method based on the dominant scatterers to estimate the objects rotation rate is presented. Finally, to show more information of objects in the InISAR images, the imaging results with a large rotation angle by the convolutional back-projection algorithm are obtained. The imaging results verify the superior performance of the multi-channel THz radar system and the imaging processing method, which can provide support for further research on InISAR imaging in the THz band.
引用
收藏
页数：15
相关论文
共 37 条
[1]   THz Chemical Imaging for Biological Applications [J].
Ajito, Katsuhiro ;
Ueno, Yuko .
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, 2011, 1 (01) :293-300
[2]   Time-Delay Multiplexing With Linear Arrays of THz Radar Transceivers [J].
Blazquez, Beatriz ;
Cooper, Ken B. ;
Llombart, Nuria .
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, 2014, 4 (02) :232-239
[3]   Spherical wave near-field imaging and radar cross-section measurement [J].
Broquetas, A ;
Palau, J ;
Jofre, L ;
Cardama, A .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1998, 46 (05) :730-735
[4]   Minimum Entropy via Subspace for ISAR Autofocus [J].
Cao, Pan ;
Xing, Mengdao ;
Sun, Guangcai ;
Li, Yachao ;
Bao, Zheng .
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, 2010, 7 (01) :205-209
[5]  
Caris M, 2015, INT RADAR SYMP PROC, P577, DOI 10.1109/IRS.2015.7226313
[6]   Phase unwrapping for large SAR interferograms: Statistical segmentation and generalized network models [J].
Chen, CW ;
Zebker, HA .
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2002, 40 (08) :1709-1719
[7]   340-GHz 3-D Imaging Radar With 4Tx-16Rx MIMO Array [J].
Cheng, Binbin ;
Cui, Zhenmao ;
Lu, Bin ;
Qin, Yuliang ;
Liu, Qiao ;
Chen, Peng ;
He, Yue ;
Jiang, Jun ;
He, Xiaoyang ;
Deng, Xianjin ;
Zhang, Jian ;
Zhu, Liguo .
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, 2018, 8 (05) :509-519
[8]   Real-Time Imaging With a 140 GHz Inverse Synthetic Aperture Radar [J].
Cheng, Binbin ;
Jiang, Ge ;
Wang, Cheng ;
Yang, Chen ;
Cai, Yingwu ;
Chen, Qi ;
Huang, Xiang ;
Zeng, Genghua ;
Jiang, Jun ;
Deng, Xianjin ;
Zhang, Jian .
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, 2013, 3 (05) :594-605
[9]   A high-resolution imaging radar at 580 GHz [J].
Cooper, K. B. ;
Dengler, R. J. ;
Chattopadhyay, G. ;
Schlecht, E. ;
Gill, J. ;
Skalare, A. ;
Mehdi, I. ;
Siegel, P. H. .
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2008, 18 (01) :64-66
[10]   THz Imaging Radar for Standoff Personnel Screening [J].
Cooper, Ken B. ;
Dengler, Robert J. ;
Llombart, Nuria ;
Thomas, Bertrand ;
Chattopadhyay, Goutam ;
Siegel, Peter H. .
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, 2011, 1 (01) :169-182
1234