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2013-12-11
Range-Spread Target Detection in Compound Gaussian Clutter with Reciprocal of the Square Root of Gamma Texture
By
Progress In Electromagnetics Research, Vol. 144, 11-21, 2014
Abstract
In this paper, the range-spread target detection in compound Gaussian clutter with reciprocal of the square root of gamma (RSRG) texture is investigated. The RSRG distribution has been proved to be a good model for texture component of extremely heterogeneous radar clutter. Taking this compound Gaussian model as a spherically invariant random process (SIRP), the Neyman-Pearson optimal detector for the range-spread target detection with known target amplitude is derived firstly. By replacing the ideal target amplitude with its maximum likelihood estimate (MLE), the generalized likelihood ratio test (GLRT) is then obtained. The statistical property of the texture component is taken into account in both of these two detectors, which makes the detectors computationally complicated. A suboptimal generalized likelihood ratio test based on order statistics (OS-GLRT) is finally proposed by substituting the texture component with its MLE. The OS-GLRT makes use of some largest observations from the range cells occupied by the most likely target scatters. The performance assessment conducted by Monte Carlo simulation validates the effectiveness of the proposed detectors.
Citation
Yanzhao Gao Ronghui Zhan Jianwei Wan , "Range-Spread Target Detection in Compound Gaussian Clutter with Reciprocal of the Square Root of Gamma Texture," Progress In Electromagnetics Research, Vol. 144, 11-21, 2014.
doi:10.2528/PIER13101005
http://www.jpier.org/PIER/pier.php?paper=13101005
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