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Passive millimeter-wave imaging technology 21-22 April 1997, Orlando, Florida

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Published by SPIE in Bellingham, Wash., USA .
Written in


  • Millimeter waves -- Congresses.,
  • Millimeter wave devices -- Congresses.,
  • Imaging systems -- Congresses.

Book details:

Edition Notes

Includes bibliographical references and index.

StatementRoger M. Smith, chair/editor ; sponsored by SPIE--the International Society for Optical Engineering.
SeriesSPIE proceedings series ;, v. 3064, Proceedings of SPIE--the International Society for Optical Engineering ;, v. 3064.
ContributionsSmith, Roger M., Society of Photo-optical Instrumentation Engineers.
LC ClassificationsTK7876.5 .P37 1997
The Physical Object
Paginationvii, 254 p. :
Number of Pages254
ID Numbers
Open LibraryOL409597M
ISBN 10081942479X
LC Control Number98111021

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Passive millimeter-wave imaging model application and validation Author(s): Bradley T. Blume; David B. Chenault Show Abstract. Passive millimeter wave imaging Abstract: This article introduces the concept of passive millimeter-wave (PMMW) imaging, describes the phenomenology that defines its performance, explains the technology advances that have made these systems a reality, and presents some of the missions in which these sensors can be used. A millimeter wave scanner is a whole-body imaging device used for detecting objects concealed underneath a person’s clothing using a form of electromagnetic l uses for this technology include detection of items for commercial loss prevention, smuggling and screening at government buildings and airport security checkpoints. Several countries employ the scanners for security. In this paper, we present a novel passive millimeter-wave (PMMW) imaging system designed using compressive sensing principles. We employ randomly encoded masks at the focal plane of the PMMW imager to acquire incoherent measurements of the imaged scene. We develop a Bayesian reconstruction algorithm to estimate the original image from these measurements, where the sparsity inherent to .

IR imaging cameras typically operate near this wavelength or at shorter wavelengths, closer to visible light. For longer wavelengths, such as in the millimeter-wave band, this radiation is at much lower intensity – but is still present and can be used to form passive millimeter-wave imaging systems.   A simple and fast single channel passive millimeter wave (PMMW) imaging system for public security check is presented in this paper. It distinguishes .   Abstract: A millimeter-wave imaging system for concealed object detection at the frequency of 24 GHz with total power radiometer configuration has been designed and tested. We added to the system a microwave lens to focus the target to the antenna and a nipkow disc to scan the image under surveillance. We also incorporated the substrate integrated waveguide (SIW) technology in the . Los Alamos National Laboratory (LANL) and AeroAstro have recently investigated the feasibility of space-based passive interferometric millimeter wave imaging (PIMI). The goal of this study is to explore a new capability that can offer day/night, all-weather, passive imaging with a 1-meter resolution, by means of millimetric interferometry via a.

Proc. SPIE , Passive Millimeter-Wave Imaging Technology IX, E (19 May ); doi: / Read Abstract + Passive millimetre wave imaging is now an established and accepted technology that is finding viable commercial applications in many areas, particularly security and border control. Millimeter Wave Advanced Imaging Technology: Passive Systems. The human body naturally emits radiation in the millimeter, submillimeter, and infrared ranges. For example, all warm objects emit heat, or infrared radiation, as discussed in Appendix C. Imaging using this natural radiation is termed “passive imaging,” to contrast with imaging.   Furthermore, several key technologies involved in the passive millimeter-wave imaging systems are discussed in detail, including the millimeter-wave radiometer, the millimeter-wave feed antenna, the focusing antenna, and the quasi-optical theory. Over the past few decades, passive millimeter-wave imaging technology has been rapidly evolving towards high spatial resolution, large field-of-view (FOV), quasi-video frame rate.