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Numerical studies of the detection of targets embedded in clutter by using angular correlation function and angular correlation imaging
Author(s) -
Zhang Guifu,
Tsang Leung,
Kuga Yasuo
Publication year - 1998
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(19980205)17:2<82::aid-mop3>3.0.co;2-e
Subject(s) - clutter , speckle pattern , correlation function (quantum field theory) , optics , physics , correlation , scattering , angular resolution (graph drawing) , monte carlo method , radar , synthetic aperture radar , computer science , mathematics , artificial intelligence , statistics , telecommunications , geometry , optoelectronics , combinatorics , dielectric
We study a detection method for targets embedded in a clutter environment based on the 3‐D angular correlation function (ACF). The clutter is modeled by randomly distributed small scatterers. The total scattered wave field at the receiver is calculated using Monte Carlo simulations, and is used for the calculation of ACF and angular correlation imaging. The angular correlation imaging consists of calculating the angular correlation function with focusing on desired locations. Compared with the traditional SAR (field) imaging, the correlation imaging has two advantages: 1) it has finer resolution than the field imaging, and 2) it can smear the speckle due to random scattering to make the target more conspicuous. We will show the angular correlation imaging method can be added to synthetic aperture radar (SAR) systems to make them more effective in obtaining information about the targets and suppressing clutter. We will also discuss general methods of correlation imaging. © 1998 John Wiley & Sons, Inc. Microwave Opt Technol Lett 17: 82–86, 1998.