Abstract
In radar detection applications, it is important to select the best statistical distribution of clutter for constructing appropriate target detection algorithms. In this work, we propose to model the amplitude statistics of the high-resolution radar by two approximated models of Weibull plus thermal noise (WN) which are considered as compound models with the speckle and texture following a Weibull distribution. First, the overall probability density function and the complementary cumulative distribution function (CCDF) are derived in the integral form as well as the expression of the moments. Then, the estimation of the parameters for each model is conducted using the parametric curve fitting estimation method of the CCDF function based on the Nelder–Mead algorithm and the moments matching method. From the real intelligent pixel processing X-band (IPIX) sea data, the fitted curves of the WN models are evaluated and compared to those of the compound Gaussian plus thermal noise (CGN) models. The modeling experiments are worked out and showed that the proposed approximated models match accurately sea clutter returns compared to CGN models, especially in the tail region.
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Guidoum, N., Soltani, F. & Mezache, A. Modeling of High-Resolution Radar Sea Clutter Using Two Approximations of the Weibull Plus Thermal Noise Distribution. Arab J Sci Eng 47, 14957–14967 (2022). https://doi.org/10.1007/s13369-022-07130-8
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DOI: https://doi.org/10.1007/s13369-022-07130-8