Real-time passive terahertz imaging system for standoff concealed weapons imaging

Arttu Luukanen, Leif Grönberg, Markus Grönholm, Petteri Lappalainen, Mikko Leivo, Anssi Rautiainen, A. Tamminen, J. Ala-Laurinaho, C. R. Dietlein, E. N. Grossman

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

20 Citations (Scopus)

Abstract

The performance of stand-off imaging systems of concealed weapons in the mm-wave range remains limited by the relatively poor angular resolution using practical aperture sizes.
For this reason, increasing the operating frequency of the systems is desired, but in practice is hard to realize due to the lack of affordable, low noise amplifiers well beyond 100 GHz. In this paper we present a passive terahertz imaging system which acquires passive terahertz (~200 GHz - ~1 THz) imagery near video frame rate. The system, one copy of which is built in Finland and the other in the U.S., is based on a 64 pixel linear array of superconducting antenna-coupled microbolometers operated within a commercial cryogen-free closed cycle cryocooler, and utilizes conical scanning Schmidt optics.
Quantitative measurements on the imager resolution metrics (thermal, spatial and temporal) will be presented.
The results from field tests at the Helsinki-Vantaa airport will be presented.
Original languageEnglish
Title of host publicationProceedings of SPIE
Subtitle of host publicationPassive Millimeter-Wave Imaging Technology XIII
EditorsDavid A. Wikner, Arttu R. Luukanen
PublisherInternational Society for Optics and Photonics SPIE
ISBN (Print)978-0-8194-8134-4
DOIs
Publication statusPublished - 2010
MoE publication typeB3 Non-refereed article in conference proceedings
EventSPIE Defense, Security, and Sensing. Passive Millimeter-Wave Imaging Technology XIII - Orlando, Florida, United States
Duration: 5 Apr 20109 Apr 2010

Publication series

SeriesProceedings of SPIE
Volume7670
ISSN0277-786X

Conference

ConferenceSPIE Defense, Security, and Sensing. Passive Millimeter-Wave Imaging Technology XIII
CountryUnited States
CityOrlando, Florida
Period5/04/109/04/10

Fingerprint

conical scanning
closed cycles
Finland
airports
weapons
field tests
linear arrays
angular resolution
imagery
low noise
antennas
amplifiers
apertures
pixels
optics

Keywords

  • bolometer
  • cryogenic sensors
  • Passive
  • stand-off detection
  • Terahertz
  • THz
  • video rate

Cite this

Luukanen, A., Grönberg, L., Grönholm, M., Lappalainen, P., Leivo, M., Rautiainen, A., ... Grossman, E. N. (2010). Real-time passive terahertz imaging system for standoff concealed weapons imaging. In D. A. Wikner, & A. R. Luukanen (Eds.), Proceedings of SPIE: Passive Millimeter-Wave Imaging Technology XIII [767004] International Society for Optics and Photonics SPIE. Proceedings of SPIE, Vol.. 7670 https://doi.org/10.1117/12.850369
Luukanen, Arttu ; Grönberg, Leif ; Grönholm, Markus ; Lappalainen, Petteri ; Leivo, Mikko ; Rautiainen, Anssi ; Tamminen, A. ; Ala-Laurinaho, J. ; Dietlein, C. R. ; Grossman, E. N. / Real-time passive terahertz imaging system for standoff concealed weapons imaging. Proceedings of SPIE: Passive Millimeter-Wave Imaging Technology XIII. editor / David A. Wikner ; Arttu R. Luukanen. International Society for Optics and Photonics SPIE, 2010. (Proceedings of SPIE, Vol. 7670).
@inproceedings{ce29c307a2b54f63828cfb695bd4c482,
title = "Real-time passive terahertz imaging system for standoff concealed weapons imaging",
abstract = "The performance of stand-off imaging systems of concealed weapons in the mm-wave range remains limited by the relatively poor angular resolution using practical aperture sizes. For this reason, increasing the operating frequency of the systems is desired, but in practice is hard to realize due to the lack of affordable, low noise amplifiers well beyond 100 GHz. In this paper we present a passive terahertz imaging system which acquires passive terahertz (~200 GHz - ~1 THz) imagery near video frame rate. The system, one copy of which is built in Finland and the other in the U.S., is based on a 64 pixel linear array of superconducting antenna-coupled microbolometers operated within a commercial cryogen-free closed cycle cryocooler, and utilizes conical scanning Schmidt optics. Quantitative measurements on the imager resolution metrics (thermal, spatial and temporal) will be presented. The results from field tests at the Helsinki-Vantaa airport will be presented.",
keywords = "bolometer, cryogenic sensors, Passive, stand-off detection, Terahertz, THz, video rate",
author = "Arttu Luukanen and Leif Gr{\"o}nberg and Markus Gr{\"o}nholm and Petteri Lappalainen and Mikko Leivo and Anssi Rautiainen and A. Tamminen and J. Ala-Laurinaho and Dietlein, {C. R.} and Grossman, {E. N.}",
year = "2010",
doi = "10.1117/12.850369",
language = "English",
isbn = "978-0-8194-8134-4",
series = "Proceedings of SPIE",
publisher = "International Society for Optics and Photonics SPIE",
editor = "Wikner, {David A.} and Luukanen, {Arttu R.}",
booktitle = "Proceedings of SPIE",
address = "United States",

}

Luukanen, A, Grönberg, L, Grönholm, M, Lappalainen, P, Leivo, M, Rautiainen, A, Tamminen, A, Ala-Laurinaho, J, Dietlein, CR & Grossman, EN 2010, Real-time passive terahertz imaging system for standoff concealed weapons imaging. in DA Wikner & AR Luukanen (eds), Proceedings of SPIE: Passive Millimeter-Wave Imaging Technology XIII., 767004, International Society for Optics and Photonics SPIE, Proceedings of SPIE, vol. 7670, SPIE Defense, Security, and Sensing. Passive Millimeter-Wave Imaging Technology XIII, Orlando, Florida, United States, 5/04/10. https://doi.org/10.1117/12.850369

Real-time passive terahertz imaging system for standoff concealed weapons imaging. / Luukanen, Arttu; Grönberg, Leif; Grönholm, Markus; Lappalainen, Petteri; Leivo, Mikko; Rautiainen, Anssi; Tamminen, A.; Ala-Laurinaho, J.; Dietlein, C. R.; Grossman, E. N.

Proceedings of SPIE: Passive Millimeter-Wave Imaging Technology XIII. ed. / David A. Wikner; Arttu R. Luukanen. International Society for Optics and Photonics SPIE, 2010. 767004 (Proceedings of SPIE, Vol. 7670).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

TY - GEN

T1 - Real-time passive terahertz imaging system for standoff concealed weapons imaging

AU - Luukanen, Arttu

AU - Grönberg, Leif

AU - Grönholm, Markus

AU - Lappalainen, Petteri

AU - Leivo, Mikko

AU - Rautiainen, Anssi

AU - Tamminen, A.

AU - Ala-Laurinaho, J.

AU - Dietlein, C. R.

AU - Grossman, E. N.

PY - 2010

Y1 - 2010

N2 - The performance of stand-off imaging systems of concealed weapons in the mm-wave range remains limited by the relatively poor angular resolution using practical aperture sizes. For this reason, increasing the operating frequency of the systems is desired, but in practice is hard to realize due to the lack of affordable, low noise amplifiers well beyond 100 GHz. In this paper we present a passive terahertz imaging system which acquires passive terahertz (~200 GHz - ~1 THz) imagery near video frame rate. The system, one copy of which is built in Finland and the other in the U.S., is based on a 64 pixel linear array of superconducting antenna-coupled microbolometers operated within a commercial cryogen-free closed cycle cryocooler, and utilizes conical scanning Schmidt optics. Quantitative measurements on the imager resolution metrics (thermal, spatial and temporal) will be presented. The results from field tests at the Helsinki-Vantaa airport will be presented.

AB - The performance of stand-off imaging systems of concealed weapons in the mm-wave range remains limited by the relatively poor angular resolution using practical aperture sizes. For this reason, increasing the operating frequency of the systems is desired, but in practice is hard to realize due to the lack of affordable, low noise amplifiers well beyond 100 GHz. In this paper we present a passive terahertz imaging system which acquires passive terahertz (~200 GHz - ~1 THz) imagery near video frame rate. The system, one copy of which is built in Finland and the other in the U.S., is based on a 64 pixel linear array of superconducting antenna-coupled microbolometers operated within a commercial cryogen-free closed cycle cryocooler, and utilizes conical scanning Schmidt optics. Quantitative measurements on the imager resolution metrics (thermal, spatial and temporal) will be presented. The results from field tests at the Helsinki-Vantaa airport will be presented.

KW - bolometer

KW - cryogenic sensors

KW - Passive

KW - stand-off detection

KW - Terahertz

KW - THz

KW - video rate

U2 - 10.1117/12.850369

DO - 10.1117/12.850369

M3 - Conference article in proceedings

SN - 978-0-8194-8134-4

T3 - Proceedings of SPIE

BT - Proceedings of SPIE

A2 - Wikner, David A.

A2 - Luukanen, Arttu R.

PB - International Society for Optics and Photonics SPIE

ER -

Luukanen A, Grönberg L, Grönholm M, Lappalainen P, Leivo M, Rautiainen A et al. Real-time passive terahertz imaging system for standoff concealed weapons imaging. In Wikner DA, Luukanen AR, editors, Proceedings of SPIE: Passive Millimeter-Wave Imaging Technology XIII. International Society for Optics and Photonics SPIE. 2010. 767004. (Proceedings of SPIE, Vol. 7670). https://doi.org/10.1117/12.850369