TY - GEN
T1 - 3D Non-Line-of-Sight Terahertz Imaging Using Mirror Folding
AU - Cui, Yiran
AU - Trichopoulos, Georgios C.
N1 - Publisher Copyright:
© 2022 USNC-URSI.
PY - 2022
Y1 - 2022
N2 - We experimentally verify a reconstruction method for terahertz (THz) non-line-of-sight (NLoS) 3D imaging. In the THz band, common building surfaces exhibit both diffuse scattering and strong specular reflections. These properties can be combined to distinguish between line-of-sight (LoS) and NLoS objects. However, the multi-reflection propagation of THz waves in a typical scene can clutter the image with ghost objects, thus the raw image obtained from a THz imaging system lacks an accurate representation of the scene geometry. With the proposed mirror folding method, we exploit the multipath propagation to 1) correct the image from cluttering and 2) see around occlusions. To further validate the feasibility of THz NLoS imaging, we carried out an around-the-corner imaging experiment in the 270-300 GHz band achieving centimeter-scale resolution.
AB - We experimentally verify a reconstruction method for terahertz (THz) non-line-of-sight (NLoS) 3D imaging. In the THz band, common building surfaces exhibit both diffuse scattering and strong specular reflections. These properties can be combined to distinguish between line-of-sight (LoS) and NLoS objects. However, the multi-reflection propagation of THz waves in a typical scene can clutter the image with ghost objects, thus the raw image obtained from a THz imaging system lacks an accurate representation of the scene geometry. With the proposed mirror folding method, we exploit the multipath propagation to 1) correct the image from cluttering and 2) see around occlusions. To further validate the feasibility of THz NLoS imaging, we carried out an around-the-corner imaging experiment in the 270-300 GHz band achieving centimeter-scale resolution.
KW - imaging
KW - non-line-of-sight
KW - terahertz
UR - http://www.scopus.com/inward/record.url?scp=85139101766&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85139101766&partnerID=8YFLogxK
U2 - 10.23919/USNC-URSINRSM57467.2022.9881411
DO - 10.23919/USNC-URSINRSM57467.2022.9881411
M3 - Conference contribution
AN - SCOPUS:85139101766
T3 - 2022 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2022 - Proceedings
SP - 89
EP - 90
BT - 2022 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2022 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2022
Y2 - 4 January 2022 through 8 January 2022
ER -