Application of angular correlation function of clutter scattering and correlation imaging in target detection

被引：27
|
作者：
Zhang, GF [1 ]
Tsang, L [1 ]
机构：
[1] Univ Washington, Dept Elect Engn, Electromagnet & Remote Sensing Lab, Seattle, WA 98195 USA
来源：
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 1998年 / 36卷 / 05期
关键词：
correlation imaging; field imaging; frequency angular correlation function; resolution; signal-clutter ratio;
D O I：
10.1109/36.718852
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
We 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 smalt if the memory effect is avoided. The correlation imaging is to calculate the correlation function with focusing on desired locations. Therefore, it can suppl ess 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.
引用
收藏
页码：1485 / 1493
页数：9
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