DocumentCode :
1431892
Title :
Application of angular correlation function of clutter scattering and correlation imaging in target detection
Author :
Zhang, Guifu ; Tsang, Leung
Author_Institution :
Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA
Volume :
36
Issue :
5
fYear :
1998
fDate :
9/1/1998 12:00:00 AM
Firstpage :
1485
Lastpage :
1493
Abstract :
The authors study a correlation imaging method for the detection of targets embedded in clutter environment. The result is based on Monte Carlo simulations. In the simulations, the targets are embedded in a medium consisting of randomly distributed small scatterers and the scattered fields are calculated. The scattered fields are then used for image processing. The incident and scattered directions are chosen to avoid the “memory effect” of clutter scattering. It has been shown that the correlation function of scattered fields due to clutter is small if the memory effect is avoided. The correlation imaging is to calculate the correlation function with focusing on desired locations, Therefore, it can suppress clutter and have finer resolution. The angular correlation (ACF) imaging is used for circular synthetic aperture radar (SAR) and frequency angular correlation (FACF) imaging is used for linear SAR. Numerical results show improvement over the conventional field imaging
Keywords :
geophysical signal processing; geophysical techniques; radar clutter; radar cross-sections; radar detection; radar imaging; remote sensing by radar; synthetic aperture radar; Monte Carlo simulation; SAR; angular correlation function; angular correlation imaging; clutter scattering; clutter suppression; correlation imaging; correlation imaging method; frequency angular correlation; geophysical measurement technique; image processing; land surface; radar detection; radar imaging; radar remote sensing; randomly distributed small scatterers; scattered field; synthetic aperture radar; target detection; terrain mapping; Clutter; Electromagnetic scattering; Frequency; Image processing; Radar scattering; Random media; Rough surfaces; Signal resolution; Surface roughness; Synthetic aperture radar;
fLanguage :
English
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
Publisher :
ieee
ISSN :
0196-2892
Type :
jour
DOI :
10.1109/36.718852
Filename :
718852
Link To Document :
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