基于认知OFDM雷达的室内环境目标场景重建

B. Jameson, D. Garmatyuk, Y. Morton, A. Curtis, R. Ewing
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引用次数: 8

摘要

本文讨论了软件定义超宽带(UWB)正交频分复用(OFDM)系统的设计和实验结果,我们的目标是将其配置为认知雷达。频域似然比(LR)是通过对每个子载波的响应分布建模和统计参数估计得到的。然后对复合LR进行广义似然比检验(GLRT)。我们提出通过自适应选择OFDM信号的子载波来增强该方法,以提高检测性能;利用目标场景的频率多样性,将基于glrt的检测与频率轮廓匹配相辅相成。当应用于软件定义系统时,这种方法将提供认知雷达功能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Target scene reconstruction in indoor environment with cognitive OFDM radar
In this paper we discuss the design and experimental results associated with the software-defined ultra-wideband (UWB) orthogonal frequency division multiplexing (OFDM) system, which we aim to configure as a cognitive radar. Frequency-domain likelihood ratios (LR) are obtained via response distribution modeling and statistical parameter estimation on a per-sub-carrier basis. Then the generalized likelihood ratio test (GLRT) is performed on a composite LR. We propose to enhance this approach via adaptive selection of OFDM signal's sub-carriers to improve the detection performance; exploiting frequency diversity of the target scene by complementing the GLRT-based detection with frequency profile matching. This approach, when applied to a software-defined system, will provide for cognitive radar functionality.
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