Terahertz Radar Imaging Based on Time-domain Spectroscopy
Wei Ming-gui,
Liang Da-chuan,
Gu Jian-qiang,
Min Rui,
Li Jin,
Ouyang Chun-mei,
Tian Zhen,
He Ming-xia,
Han Jia-guang,
Zhang Wei-li
Affiliations
Wei Ming-gui
①(College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China) ②(Key Laboratory of Opto-Electronics Information and Technical Science, Ministry of Education, Tianjin 300072, China)
Liang Da-chuan
①(College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China) ②(Key Laboratory of Opto-Electronics Information and Technical Science, Ministry of Education, Tianjin 300072, China)
Gu Jian-qiang
①(College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China) ②(Key Laboratory of Opto-Electronics Information and Technical Science, Ministry of Education, Tianjin 300072, China)
Min Rui
③(School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China)
Li Jin
③(School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China)
Ouyang Chun-mei
①(College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China) ②(Key Laboratory of Opto-Electronics Information and Technical Science, Ministry of Education, Tianjin 300072, China)
Tian Zhen
①(College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China) ②(Key Laboratory of Opto-Electronics Information and Technical Science, Ministry of Education, Tianjin 300072, China)
He Ming-xia
①(College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China) ②(Key Laboratory of Opto-Electronics Information and Technical Science, Ministry of Education, Tianjin 300072, China)
Han Jia-guang
①(College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China) ②(Key Laboratory of Opto-Electronics Information and Technical Science, Ministry of Education, Tianjin 300072, China)
Zhang Wei-li
①(College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China)③(School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China)
This study uses time domain terahertz radar system to discuss systematic imaging studies on the scaled models based on the improved Back-Projection (BP) algorithm. We image the scaled models with different shapes and are able to distinguish spatial gaps as small as 6 mm. The Theoretical calculation predicts that the lateral resolution and the axial resolution can be as high as 0.125 mm. Center enhancement and background rings caused by the algorithm in the imaging results are also qualitatively analyzed and are proposed methods to overcome this problem.
