Open AccessSimulation, acquisition and analysis of passive millimeter-wave images in remote sensing applications
Author(s) -
M. R. Fetterman,
Jeremy Grata,
Gregory D. Jubic,
William L. Kiser,
Andrew Visnansky
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.020503
Subject(s) - extremely high frequency , optics , raster graphics , raster scan , angular resolution (graph drawing) , detector , image resolution , millimeter , remote sensing , image sensor , diffraction , physics , aperture (computer memory) , computer science , artificial intelligence , geology , acoustics , mathematics , combinatorics
We report on the development of a passive millimeter-wave (MMW) imager for remote sensing, and the comparison of the experimentally acquired images with the theoretical images from our MMW scene simulator. The imager has an aperture diameter of 0.6m, and the detector and the imaging optics are mechanically raster-scanned over the scene to form an image. The angular resolution was experimentally found to be 0.4 degrees, which is close to the theoretical diffraction limit of 0.37 degrees, and the imager NEDT was measured to be 0.9 K. Qualitatively, simulated MMW imagery showed good agreement with an experimental MMW image.