SPHERICAL-PARTICLE SIZING BY OPTICAL CORRELATION USING TERNARY PHASE-AMPLITUDE FILTERS

被引：2
|
作者：
MARSHALL, MS [1 ]
BENNER, RE [1 ]
机构：
[1] UNIV UTAH,DEPT ELECT ENGN,SALT LAKE CITY,UT 84122
来源：
APPLIED OPTICS | 1992年 / 31卷 / 05期
关键词：
D O I：
10.1364/AO.31.000644
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Computer simulations and experimental data are presented for various ternary phase-amplitude filters used to size opaque spherical particles. We first report on nearly unlimited spatial frequency ternary phase-amplitude filters derived directly from the classical matched filter for opaque spherical particles in the size range of 100 to 400-mu-m. Next we investigate the increasing influence of the cutoff frequency on the optical correlator as the particles become smaller. Using limited-order ternary phase-amplitude filters, we report on sizing opaque spherical particles in the size ranges of 100 to 400, 15 to 100, and 5 to 25-mu-m.
引用
收藏
页码：644 / 651
页数：8
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