Speckle imaging over horizontal paths

被引:53
作者
Carrano, CJ [1 ]
机构
[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
来源
HIGH-RESOLUTION WAVEFRONT CONTROL: METHODS, DEVICES, AND APPLICATIONS IV | 2002年 / 4825卷
关键词
horizontal-path imaging; slant-path imaging; bispectral speckle imaging; extended scene reconstruction;
D O I
10.1117/12.453519
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Atmospheric aberrations reduce the resolution and contrast in surveillance images recorded over horizontal or slant paths. This paper describes our recent horizontal and slant-path imaging experiments of extended scenes as well as the results obtained using speckle imaging. The experiments were performed with an 8-inch diameter telescope placed on either a rooftop or hillside and cover ranges of interest from 0.5 km up to 10 km. The scenery includes resolution targets, people, vehicles, and other structures. The improvement in image quality using speckle imaging is dramatic in many cases, and depends significantly upon the atmospheric conditions. We quantify resolution improvement through modulation transfer function measurement comparisons.
引用
收藏
页码:109 / 120
页数:12
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