Passive Radar Imaging of Moving Targets Using WiFi Signals
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摘要: 近些年无线局域网快速发展,覆盖范围增加,该文研究基于WiFi (Wireless Fidelity)信号的运动目标成像,扩展无源雷达的应用。首先探讨分析WiFi信号模糊函数特性,结果表明其具有良好的距离分辨率,可以用作无源雷达的外辐射源。然后采用分布式孔径,借助广义似然比估计理论进行成像,重建运动目标在2维空间的分布与速度,并分析了成像分辨率。仿真结果验证了给出的基于WiFi信号的无源雷达运动目标成像方法的有效性。
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关键词:
- 无源雷达 /
- 运动目标 /
- 成像 /
- 无线网络信号(WiFi) /
- 分布式孔径
Abstract: In recent years, the wireless local networks are constructed rapidly and their coverage greatly increase. The passive radar imaging of moving targets using WiFi signals is studied in this paper, which may lead to wider applications of passive radars. Firstly, the ambiguity function of WiFi signals is analyzed. The results show that the WiFi signal has good range and velocity ambiguity and can be used as an illumination source. Then, distributed apertures are used to receive target echoes and the imaging is performed using a Generalized Likelihood Ratio Test (GLRT)-based approach. The positions and velocities of the moving targets can be reconstructed. The resolution of the imaging method is also analyzed. Simulation results demonstrate the performance of the presented passive radar imaging method of moving targets using WiFi signals.-
Key words:
- Passive radar /
- Moving targets /
- Imaging /
- WiFi /
- Distributed apertures
期刊类型引用(4)
1. 饶云华,潘登,朱华梁,万显荣,易建新,龚子平,柯亨玉. 基于一次反射的室内WiFi辐射源单站定位方法. 太赫兹科学与电子信息学报. 2021(04): 672-677 . 百度学术
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4. 杨小琪,姜卫东,霍凯. 基于OFDM信号的无源雷达干扰抑制方法. 雷达科学与技术. 2016(04): 364-370 . 百度学术
其他类型引用(6)
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