Design of a Robust Radio Frequency Fingerprint Identification Scheme for Multi-Mode LFM Radar
Design of a Robust Radio Frequency Fingerprint Identification Scheme for Multi-Mode LFM Radar
复制标题
多模LFM雷达鲁棒射频指纹识别方案设计
DOI：
10.1109/jiot.2020.3003692
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发表时间：
2020
影响因子：
10.6
通讯作者：
Ting Wang
中科院分区：
文献类型：
--
作者：
Yuexiu Xing;Aiqun Hu;Junqing Zhang;Jiabao Yu;Guyue Li;Ting Wang
雷达是物联网（IoT）不可或缺的一部分。具体的发射器识别是识别合法雷达的必要条件，更重要的是拒绝恶意雷达。传统的方法依赖于无法识别特定发射器的脉冲参数，因为两个雷达可能具有相同的配置或恶意雷达可以执行欺骗攻击。射频指纹（RFF）是由于硬件缺陷而产生的设备特有的、固有的硬件特征，可以作为设备的身份识别。本文以线性调频（LFM）雷达为例，提出了一种基于RFF的鲁棒可靠雷达识别方案。该方案首先对脉冲的工作模式进行分类，然后消除噪声影响，最后根据瞬态和基于调制的RFF特征识别雷达发射源。实验结果验证了我们的雷达识别方案在4个模式下的有效性，每个模式下每个雷达有2000个脉冲。当信噪比在5 dB左右时，四种模式的识别率均大于90%。此外，即使信噪比低至-10 dB，模式3也能实现几乎100%的识别精度。
Radar is an indispensable part of the Internet of Things (IoT). Specific emitter identification is essential to identify the legitimate radars and, more importantly, to reject the malicious radars. Conventional methods rely on pulse parameters that are not capable to identify the specific emitter as two radars may have the same configuration or a malicious radar can perform spoofing attacks. Radio-frequency fingerprint (RFF) is the unique and intrinsic hardware characteristic of devices resulted from hardware imperfection, which can be used as the device identity. This article proposes a robust and reliable radar identification scheme based on the RFF, taking linear frequency modulation (LFM) radar as a case study. This scheme first classifies the operation mode of the pulses, then eliminates the noise effect, and finally identifies the radar emitters based on the transient and modulation-based RFF features. The experimental results verify the effectiveness of our radar identification scheme among three real LFM radars (same model) operating at four modes, each mode with 2000 pulses from each radar. The identification rates of the four modes are all higher than 90% when the signal-to-noise ratio (SNR) is about 5 dB. In addition, mode 3 achieves almost 100% identification accuracy even when the SNR is as low as -10 dB.