Millimeter wave imaging with engineered point spread functions

被引：7
|
作者：
Mait, Joseph N. [1 ]
Martin, Richard D. [2 ]
Schuetz, Christopher A. [2 ]
Prather, Dennis W. [3 ]
机构：
[1] USA, Res Lab, Adelphi, MD 20783 USA
[2] Phase Sensit Innovat, Newark, DE 19711 USA
[3] Univ Delaware, Dept Elect & Comp Engn, Newark, DE 19716 USA
来源：
OPTICAL ENGINEERING | 2012年 / 51卷 / 09期
关键词：
imaging systems; phase-only filters; point spread functions; millimeter waves; PUPIL-FUNCTION DESIGN; ARRAYS;
D O I：
10.1117/1.OE.51.9.091606
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate experimentally the ability to shape the point spread function of a distributed-aperture millimeter-wave imaging system by modifying its aperture phase. We consider distributions on a regular hexagonal array and a nonredundant array. We also show how to exploit this capability to perform low-resolution analog image processing. A preliminary investigation of system performance reveals nonuniformity in amplitude response across the array is a major contributor to deviations from predicted point spread functions (PSFs). (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.9.091606]
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页数：9
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