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本文研究Rice杂波中SwerlingⅡ目标的离散时间检测。导出了杂波稳定分量相干及不相干时的似然比(LR)检测器的结构。得到了这些检测器的功效表达式。把LR检测器与传统的平方律检测器的渐近性能进行了比较。计算结果表明,杂波统计特性越偏离高斯情形,LR检测器的检测性能就越是优于平方律检测器,而且杂波稳定分量相干时的LR检测器的ARE比不相干时的要大一倍以上。
This paper investigates the discrete time detection of the Swerling II target in Rice clutter. The structure of Likelihood Ratio (LR) detector for coherent and non-coherent clutter components is derived. Obtained the effectiveness of these detectors expression. The asymptotic performance of the LR detector and the traditional square-law detector is compared. The calculation results show that the more the statistical characteristics of clutter deviate from the Gaussian case, the better the detection performance of the LR detector is than the square law detector, and the larger the ARE detector’s ARE than the non-coherent detector when the clutter component is coherent Times more.