Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Range resolved mode mixing in a large volume for the mitigation of speckle and strategic target orientation requirements in active millimeter-wave imaging

Not Accessible

Your library or personal account may give you access

Abstract

In spite of many reports of active millimeter-wave imaging in the literature, speckle and requirements for cooperative target orientation significantly reduce its practical usefulness. Here we report a new technique, range resolved mode mixing (RRMM), which significantly mitigates both of these issues. It also provides a three-dimensional (3D) image. RRMM accomplishes this by combining multimode illumination (which eliminates the requirement for cooperative target orientation) with range resolution (which provides statistical independence of speckle patterns for averaging and the 3D image). The use of a 5W extended interaction klystron amplifier results in large signal margins in the 50 m scale atrium of the Physics Department at Ohio State University. It appears that there are a number of scenarios out to a range of 1 km for which this approach is useful to provide 3D images, with minimal speckle, and no requirement for cooperative target orientation.

© 2015 Optical Society of America

Full Article  |  PDF Article
More Like This
Multimode illumination for speckle reduction and angle neutrality in millimeter wave active imaging: range and time-resolved mode averaging

Mark A. Patrick, Colin D. Joye, and Frank C. De Lucia
J. Opt. Soc. Am. A 31(10) 2135-2141 (2014)

Elimination of speckle and target orientation requirements in millimeter-wave active imaging by modulated multimode mixing illumination

Mark A. Patrick, Jennifer A. Holt, Colin D. Joye, and Frank C. De Lucia
J. Opt. Soc. Am. A 29(12) 2643-2656 (2012)

Comparison of speckle reduction diversity tools for active millimeter-wave imaging

Irina Jaeger, Johan Stiens, Lixao Zhang, Saiful Islam, Gaetan Koers, and Roger Vounckx
J. Opt. Soc. Am. A 25(7) 1716-1721 (2008)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (14)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (22)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved