In this paper we overview the theory of Linear Time-Varying (LTV) filters and investigate via simulation their application to buried target classification in challenging nonstationary environments; in particular, environments where noise is not only nonstationary but exhibits statistical properties that are not known a priori. We then propose an extension of the Minimum Probability of Error (MPE) classifier (a/k/a Minimum Distance Receiver) by pre-processing the received data through a bank of LTV filters before the calculation of each test statistic via the MPE classifier. The proposed augmented MPE classifier is shown to outperform the conventional MPE classifier via simulation.
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机译:在本文中,我们概述了线性时变(LTV)滤波器的理论,并通过仿真研究了它们在具有挑战性的非平稳环境中在掩埋目标分类中的应用;特别地,噪声不仅是不稳定的,而且表现出先验未知的统计特性的环境。然后,我们建议在通过MPE分类器计算每个测试统计量之前,通过一组LTV滤波器对接收到的数据进行预处理,从而扩展最小错误概率(MPE)分类器(a / k / a最小距离接收器)。通过仿真显示,提出的增强型MPE分类器优于传统的MPE分类器。
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