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Sensors 2019, 19(2), 226;

Phaseless Terahertz Coded-Aperture Imaging Based on Incoherent Detection

School of Electronic Science, National University of Defense Technology, Changsha 410073, China
Author to whom correspondence should be addressed.
Received: 27 October 2018 / Revised: 30 December 2018 / Accepted: 2 January 2019 / Published: 9 January 2019
(This article belongs to the Section Remote Sensors)
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In this paper, we propose a phaseless terahertz coded-aperture imaging (PTCAI) method by using a single incoherent detector or an incoherent detection array. We at first analyze and model the system architecture, derive the matrix imaging equation, and then study the phase retrieval techniques to reconstruct the original target with high resolution. Numerical experiments are performed and the results show that the proposed method can significantly reduce the system complexity in the receiving process while maintaining high resolution imaging capability. Furthermore, the approach of using incoherent detection array instead of single detector is capable of decreasing the encoding and sampling times, and therefore helps to improve the imaging frame rate. In our future research, the method proposed in this paper will be experimentally tested and validated, and high-speed PTCAI at nearly real-time frame rates will be the main work. View Full-Text
Keywords: terahertz; coded-aperture imaging; phaseless imaging; incoherent detection; phase retrieval terahertz; coded-aperture imaging; phaseless imaging; incoherent detection; phase retrieval

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Peng, L.; Luo, C.; Deng, B.; Wang, H.; Qin, Y.; Chen, S. Phaseless Terahertz Coded-Aperture Imaging Based on Incoherent Detection. Sensors 2019, 19, 226.

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