Measurement of Sharpness and Its Application in ISAR Imaging

Author

Junfeng Wang ; Xingzhao Liu

Author_Institution

Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China

Volume

51

Issue

9

fYear

2013

fDate

Sept. 2013

Firstpage

4885

Lastpage

4892

Abstract

It is necessary to measure the sharpness of distributions in many situations. A class of functions is investigated in this paper. First, the relation between this class and sharpness is clarified, and this justifies this class as sharpness measures. Then, we analyze the performance of different sharpness measures and present a guide to select the sharpness measure. In addition, the relation of this class to the sparsity measure is addressed, which leads to a deeper understanding about sparsity. Finally, we show and discuss the application of this class in inverse synthetic aperture radar imaging.

Keywords

geophysical image processing; radar imaging; remote sensing by radar; synthetic aperture radar; ISAR imaging; distribution sharpness; inverse synthetic aperture radar imaging; sharpness measurement; sparsity measure; Density measurement; Entropy; Extraterrestrial measurements; Imaging; Radar imaging; Seismic measurements; Sensitivity; Contrast; entropy; inverse synthetic aperture radar (ISAR); sharpness; sparsity;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/TGRS.2013.2273554

Filename

6576176