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

Study of active millimeter-wave image speckle reduction by Hadamard phase pattern illumination

Not Accessible

Your library or personal account may give you access

Abstract

Active millimeter-wave images typically exhibit characteristic speckle noise, due to the coherence of artificial millimeter-wave sources. We study the Hadamard speckle contrast reduction (SCR) technique, which has been successfully used in laser projection systems, in the context of millimeter-wave imaging. We show the impact of Hadamard pattern order and size and of image and pattern resolution on speckle reduction efficiency. Practical limitations of Hadamard pattern implementations and their effect on speckle reduction efficiency are also discussed.

© 2008 Optical Society of America

Full Article  |  PDF Article
More Like This
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)

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)

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 (11)

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 (1)

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