Abstract
摘要: 在球不变随机向量杂波背景下,研究了稀疏距离扩展目标的自适应检测问题.基于有序检测理论, 利用协方差矩阵估计方法,分析了自适应检测器(Adaptive detector, AD).其中,基于采样协方差矩阵(Sample covariance matrix, SCM)和归一化采样协方差矩阵(Normalized sample covariance matrix, NSCM),分别建立了AD-SCM和AD-NSCM检测器.从恒虚警率特性和检测性能综合来看, AD-NSCM的性能优于AD-SCM和已有的修正广义似然比检测器.最后,通过仿真实验验证了所提方法的有效性. 关键词: 稀疏距离扩展目标 / 自适应检测 / 采样协方差矩阵 / 归一化采样协方差矩阵 / 有序统计量
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