Near-field microwave imaging of dielectric anomalies: antennas and processing

W. Davis; James T. Nilles; E. L. Rope; Gus P. Tricoles

doi:10.1117/12.34757

1 July 1990 Near-field microwave imaging of dielectric anomalies: antennas and processing

W. Davis, James T. Nilles, E. L. Rope, Gus P. Tricoles

Proceedings Volume 1319, Optics in Complex Systems; (1990) https://doi.org/10.1117/12.34757
Event: 15th International Optics in Complex Systems, 1990, Garmisch, Germany

Abstract

In microwave systems for detecting or imaging buried dielectric anomalies, a common technique is to search for reflectance variations by mechanically scanning an antenna over an area. The antenna usually operates in its and the object's nearfields to reduce diffraction spreading so that the reflectance distribution resembles the object's shape and is thus an image. Although mechanical scanning is reliable, it is slow because data acquisition is sequential. Data acquisition can be accelerated by an antenna array. An array provides spatially parallel data channels. If a single transmitter and receiver unit are used, acquisition is sequential but very fast with solid state switches. If each antenna has a transmitter and receiver, acquisition is simultaneous, and costs increase.

Citation Download Citation

W. Davis, James T. Nilles, E. L. Rope, and Gus P. Tricoles "Near-field microwave imaging of dielectric anomalies: antennas and processing", Proc. SPIE 1319, Optics in Complex Systems, (1 July 1990); https://doi.org/10.1117/12.34757

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available