Non-Line of Sight Terahert Imaging from a Single Viewpoint

Sai Kiran Doddalla; Georgios Trichopoulos

doi:10.1109/MWSYM.2018.8439239

Non-Line of Sight Terahert Imaging from a Single Viewpoint

Sai Kiran Doddalla, Georgios Trichopoulos

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

17 Scopus citations

Abstract

We present a novel method for imaging objects hidden around occlusions by exploiting the scattering properties of terahertz (THz) waves. Most building surfaces reflect THz waves strongly in a single direction (specular scattering) and behave as lossy mirrors that allow imaging of non-line-of-sight (NLOS) objects from a single observation location. Interestingly, mirror surfaces can be directly imaged by capturing the backscattered waves due to diffusion scattering. We demonstrate the NLOS THz imaging capability using a backpropagation synthetic aperture radar (SAR) imaging algorithm that corrects the cluttered raw data and acquires accurate THz images of the occluded areas. The new imaging approach is verified through imaging examples in the 220-330 GHz band using common building materials.

Original language	English (US)
Title of host publication	Proceedings of the 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1527-1529
Number of pages	3
Volume	2018-June
ISBN (Print)	9781538650677
DOIs	https://doi.org/10.1109/MWSYM.2018.8439239
State	Published - Aug 17 2018
Event	2018 IEEE/MTT-S International Microwave Symposium, IMS 2018 - Philadelphia, United States Duration: Jun 10 2018 → Jun 15 2018

Other

Other	2018 IEEE/MTT-S International Microwave Symposium, IMS 2018
Country/Territory	United States
City	Philadelphia
Period	6/10/18 → 6/15/18

Keywords

diffusion scattering
non-line of sight imaging
terahertz radar imaging

ASJC Scopus subject areas

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1109/MWSYM.2018.8439239

Cite this

Non-Line of Sight Terahert Imaging from a Single Viewpoint. / Doddalla, Sai Kiran; Trichopoulos, Georgios.
Proceedings of the 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018. Vol. 2018-June Institute of Electrical and Electronics Engineers Inc., 2018. p. 1527-1529 8439239.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Doddalla, SK & Trichopoulos, G 2018, Non-Line of Sight Terahert Imaging from a Single Viewpoint. in Proceedings of the 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018. vol. 2018-June, 8439239, Institute of Electrical and Electronics Engineers Inc., pp. 1527-1529, 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018, Philadelphia, United States, 6/10/18. https://doi.org/10.1109/MWSYM.2018.8439239

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abstract = "We present a novel method for imaging objects hidden around occlusions by exploiting the scattering properties of terahertz (THz) waves. Most building surfaces reflect THz waves strongly in a single direction (specular scattering) and behave as lossy mirrors that allow imaging of non-line-of-sight (NLOS) objects from a single observation location. Interestingly, mirror surfaces can be directly imaged by capturing the backscattered waves due to diffusion scattering. We demonstrate the NLOS THz imaging capability using a backpropagation synthetic aperture radar (SAR) imaging algorithm that corrects the cluttered raw data and acquires accurate THz images of the occluded areas. The new imaging approach is verified through imaging examples in the 220-330 GHz band using common building materials.",

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N2 - We present a novel method for imaging objects hidden around occlusions by exploiting the scattering properties of terahertz (THz) waves. Most building surfaces reflect THz waves strongly in a single direction (specular scattering) and behave as lossy mirrors that allow imaging of non-line-of-sight (NLOS) objects from a single observation location. Interestingly, mirror surfaces can be directly imaged by capturing the backscattered waves due to diffusion scattering. We demonstrate the NLOS THz imaging capability using a backpropagation synthetic aperture radar (SAR) imaging algorithm that corrects the cluttered raw data and acquires accurate THz images of the occluded areas. The new imaging approach is verified through imaging examples in the 220-330 GHz band using common building materials.

AB - We present a novel method for imaging objects hidden around occlusions by exploiting the scattering properties of terahertz (THz) waves. Most building surfaces reflect THz waves strongly in a single direction (specular scattering) and behave as lossy mirrors that allow imaging of non-line-of-sight (NLOS) objects from a single observation location. Interestingly, mirror surfaces can be directly imaged by capturing the backscattered waves due to diffusion scattering. We demonstrate the NLOS THz imaging capability using a backpropagation synthetic aperture radar (SAR) imaging algorithm that corrects the cluttered raw data and acquires accurate THz images of the occluded areas. The new imaging approach is verified through imaging examples in the 220-330 GHz band using common building materials.

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Non-Line of Sight Terahert Imaging from a Single Viewpoint

Abstract

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Keywords

ASJC Scopus subject areas

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