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首页> 外文期刊>IEEE Transactions on Antennas and Propagation >Signal-to-Noise Ratio Improvement by Vortex Wave Detection With a Rotational Antenna
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Signal-to-Noise Ratio Improvement by Vortex Wave Detection With a Rotational Antenna

机译：通过旋转天线的涡流波检测通过涡流波检测的信噪比改善

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摘要

This article investigates whether a vortex wave detection method with a rotational antenna can improve the receiving signal-to-noise ratio (SNR) of stealth targets. To be specific, a vortex wave detection system with a rotational antenna is established. Considering both bistatic and monostatic models, it demonstrates that the vortex wave can be efficiently synthesized by applying the fast Fourier transformation algorithm to all receiving pulses. The SNR of synthetic orbital angular momentum (OAM) is compared with that of circular synthetic aperture radar (SAR) because the synthetic OAM and circular SAR systems have similar architectures and are described by similar mathematical models. Experiments confirm that the synthetic OAM method can improve the receiving SNR of a specific complex target with different polarizations. The SNR improvement by OAM for general complex targets is then demonstrated in simulations. Furthermore, the detection probability and the quality of 2-D detection results can also be improved by the proposed synthetic OAM method.
机译：本文研究了具有旋转天线的涡流波检测方法是否可以改善隐身目标的接收信噪比（SNR）。具体地，建立具有旋转天线的涡流波检测系统。考虑到双面和单体模型，它表明，通过将快速傅里叶变换算法应用于所有接收脉冲，可以有效地合成涡流波。与圆形合成孔径雷达（SAR）进行比较合成轨道角动量（OAM）的SNR，因为合成OAM和圆形SAR系统具有相似的架构，并且由类似的数学模型描述。实验证实，合成OAM方法可以通过不同的偏振来改善特定复合靶的接收SNR。然后，在模拟中展示了OAM的SNR改善。此外，通过所提出的合成OAM方法还可以提高检测概率和2-D检测结果的质量。

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