Large distance 3D imaging of hidden objects

Daniel Rozban, Avihai Aharon Akram, N. S. Kopeika, A. Abramovich, Assaf Levanon

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Imaging systems in millimeter waves are required for applications in medicine, communications, homeland security, and space technology. This is because there is no known ionization hazard for biological tissue, and atmospheric attenuation in this range of the spectrum is low compared to that of infrared and optical rays. The lack of an inexpensive room temperature detector makes it difficult to give a suitable real time implement for the above applications. A 3D MMW imaging system based on chirp radar was studied previously using a scanning imaging system of a single detector. The system presented here proposes to employ a chirp radar method with Glow Discharge Detector (GDD) Focal Plane Array (FPA of plasma based detectors) using heterodyne detection. The intensity at each pixel in the GDD FPA yields the usual 2D image. The value of the I-F frequency yields the range information at each pixel. This will enable 3D MMW imaging. In this work we experimentally demonstrate the feasibility of implementing an imaging system based on radar principles and FPA of inexpensive detectors. This imaging system is shown to be capable of imaging objects from distances of at least 10 meters.

Original languageEnglish
Title of host publicationPassive and Active Millimeter-Wave Imaging XVII
PublisherSPIE
ISBN (Print)9781628410150
DOIs
StatePublished - 1 Jan 2014
Externally publishedYes
EventPassive and Active Millimeter-Wave Imaging XVII - Baltimore, MD, United States
Duration: 8 May 20149 May 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9078
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferencePassive and Active Millimeter-Wave Imaging XVII
Country/TerritoryUnited States
CityBaltimore, MD
Period8/05/149/05/14

Keywords

  • FMCW
  • Heterodyne
  • Plasma
  • THz
  • THz detector

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