arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.01711eess.SP
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面向异构环境的雷达自适应检测架构

Radar Adaptive Detection Architectures for Heterogeneous Environments

Jun Liu, Davide Massaro, Danilo Orlando, Alfonso Farina

AI总结:

针对异构高斯环境,本文提出四种自适应雷达检测架构,并通过仿真与实测验证变换域架构可保持恒虚警率且检测损失有限。

摘要:

本文设计了四种用于异构高斯环境中目标检测的自适应雷达架构。第一种架构依赖循环优化,在原始数据域中利用最大似然方法;而第二种检测器是变换后数据的函数,这些数据根据其能量进行归一化,未知参数则通过基于期望最大化的交替过程进行估计。其余两种架构通过适当结合此前设计的估计过程与检测器结构得到。在仿真数据和实测数据上开展的性能分析表明,在变换域中工作的架构能够保证相对于干扰功率变化的恒虚警率特性,并且相对于其他检测器仅有有限的检测损失;然而,其他检测器的检测门限对干扰功率非常敏感。

英文摘要:

In this paper, four adaptive radar architectures for target detection in heterogeneous Gaussian environments are devised. The first architecture relies on a cyclic optimization exploiting the Maximum Likelihood Approach in the original data domain, whereas the second detector is a function of transformed data which are normalized with respect to their energy and with the unknown parameters estimated through an Expectation-Maximization-based alternate procedure. The remaining two architectures are obtained by suitably combining the estimation procedures and the detector structures previously devised. Performance analysis, conducted on both simulated and measured data, highlights that the architecture working in the transformed domain guarantees the constant false alarm rate property with respect to the interference power variations and a limited detection loss with respect to the other detectors, whose detection thresholds nevertheless are very sensitive to the interference power.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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