Experimental analysis of sea clutter using airborne circular scanning SAR in medium grazing angle  

作　　者：PAN Xueli LIAO Guisheng YANG Zhiwei DANG Hongxing 

机构地区：[1]National Laboratory of Radar Signal Processing, Xidian University [2]Academy of Space Electronic Information Technology

出　　处：《Journal of Systems Engineering and Electronics》2019年第1期68-77,共10页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(61621005; 61671352);the Key Laboratory of Cognitive Radio and Information Processing,Ministry of Education(Guilin University of Electronic Technology)(CRKL160206);the Innovational Foundation of Shanghai Academy of Space Technology(SAST2016027;SAST2016033)

摘　　要：The theoretical statistical model of sea clutter is a key issue for maritime surveillance. In recent years, the statistical model of sea clutter has attracted much attention to design the detector well. Meanwhile, the circular scanning synthetic aperture radar(SAR) has been applied to wide surveillance of the sea surface.Therefore, the paper analyzes the validity of available sea clutter models for range Doppler images from different scan angles for moderate sea state in the medium grazing angle. The parameter estimation method for different distribution models employs the method of logarithmic cumulant(MoLC) based on Mellin transform uniformly. By the analysis of the fitting performance between the histogram of real data and the amplitude probability density function(PDF) of empirical distribution models and the goodness-of-fit(GoF) test for real data from different scan angles, it is indicated the generalized K(GK) distribution with generalized Gamma texture distribution can fit the sea clutter well for different scan angles in the medium grazing angle.The theoretical statistical model of sea clutter is a key issue for maritime surveillance. In recent years, the statistical model of sea clutter has attracted much attention to design the detector well. Meanwhile, the circular scanning synthetic aperture radar(SAR) has been applied to wide surveillance of the sea surface.Therefore, the paper analyzes the validity of available sea clutter models for range Doppler images from different scan angles for moderate sea state in the medium grazing angle. The parameter estimation method for different distribution models employs the method of logarithmic cumulant(MoLC) based on Mellin transform uniformly. By the analysis of the fitting performance between the histogram of real data and the amplitude probability density function(PDF) of empirical distribution models and the goodness-of-fit(GoF) test for real data from different scan angles, it is indicated the generalized K(GK) distribution with generalized Gamma texture distribution can fit the sea clutter well for different scan angles in the medium grazing angle.

关 键 词：range DOPPLER image method of logarithmic CUMULANT (MoLC) Mellin TRANSFORM generalized GAMMA distribution. 

分 类 号：N[自然科学总论]