基于滤波器组多载波的组网低截获探通一体化信号设计

陈军; 王昊; 贺晓波; 王杰; 周建江

doi:10.11999/JEIT240342

基于滤波器组多载波的组网低截获探通一体化信号设计

doi: 10.11999/JEIT240342

陈军^1, ,,
王昊¹,
贺晓波¹,
王杰¹,
周建江²

1.
南京信息工程大学电子与信息工程学院南京 210044
2.
南京航空航天大学雷达成像与微波光子技术教育部重点实验室南京 210016

基金项目: 国家自然科学基金(62171229)，江苏省自然科学基金(BK20190772)，航空科学基金(20200020052005)，雷达成像与微波光子技术教育部重点实验室基金(南京航空航天大学)(NJ20230002)

详细信息

作者简介:
陈军：男，博士，讲师，研究方向为雷达通信一体化、低截获概率雷达、雷达目标检测等

王昊：男，硕士生，研究方向为低截获雷达通信一体化组网系统设计

贺晓波：男，硕士生，研究方向为低截获雷达通信一体化

王杰：男，博士，副研究员，研究方向为MIMO雷达信号设计、合成孔径雷达处理、雷达通信一体化

周建江：男，博士，教授，研究方向为研究方向为飞行器射频隐身技术、雷达目标特性分析、航空电子信息系统设计等

通讯作者:
陈军　junchen@nuist.edu.cn

中图分类号: TN958
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- 文章访问数: 150
- HTML全文浏览量: 35
- PDF下载量: 49
- 被引次数: 0
出版历程
- 收稿日期: 2024-04-29
- 修回日期: 2024-08-21
- 网络出版日期: 2024-08-30
- 刊出日期: 2024-11-10

Design of Low Probability of Intercept and Communication Signal Based on Filter Bank Multi-Carrier for Multi-node Network Systems

1.
School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
2.
Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Funds: The National Natural Science Foundation of China (62171229), The Natural Science Foundation of Jiangsu Province (BK20190772), The Aeronautical Science Foundation (20200020052005), The Foundation of Key Laboratory of Radar Imaging and Microwave Photon Technology of Ministry of Education (Nanjing University of Aeronautics and Astronautics) (NJ20230002)

摘要

摘要: 在现代电子对抗中，将多部探通一体化系统进行组网，可以提高单站探通一体化系统探测效率和协同探测能力。由于探通一体化信号自身峰均比较高，信号易被截获，系统的生存能力受到严重威胁。为了提升探通一体化信号的低截获性能(LPI)，首先该文在滤波器组多载波的框架下，提出一种通信子载波分组功率优化和雷达子载波异置等功率优化的组网低截获探通一体化信号时频结构。然后，该文从信息论的角度出发，统一了系统的性能评估指标；将最小化截获信息距离作为优化目标函数，建立了组网探通一体化信号低截获优化模型。该文将此优化模型转换为凸优化问题，并利用Karush-Kuhn-Tucker条件对其进行求解。仿真结果表明，该文所设计的组网低截获探通一体化信号在探测动目标时，节点间雷达干扰低至近–60 dB，通信误码率满足10^–6数量级，同时能有效降低截获信号的信噪比。
- 低截获概率 /
- 探通一体化 /
- 组网系统 /
- 滤波器组多载波 /
- 信息论
Abstract: In modern electronic countermeasures, grouping of multiple joint radar and communication systems can improve the detection efficiency and collaborative detection capability of the single joint radar and communication system. Due to the high peak to average power ratio of the joint radar and communication signal itself, the signal is easy to be intercepted, and the system’s survivability is seriously threatened. In order to improve the Low Probability of Intercept (LPI) performance of the joint radar and communication signal, a time-frequency structure of grouping LPI joint radar and communication signal with communication subcarrier grouping power optimization and radar subcarrier interleaving equal power optimization under the framework of filter bank multicarrier is proposed in this paper. Then, from the perspective of the information theory, the paper unifies the performance assessment metrics of the system; On this basis, minimizing the intercepted information divergence of the interceptor is taken as the optimization objective, and an LPI optimization model of the group network joint radar and communication signal is established. The paper converts this optimization model into a convex optimization problem and solves it using the Karush-Kuhn-Tucker condition. The simulation results show that the radar interference of the network LPI joint radar and communication signal designed in this paper has inter-node radar interference as low as nearly –60 dB when detecting moving targets, and the communication bit error rate satisfies 10^–6 order of magnitude, while the signal-to-noise ratio of the intercepted signal is effectively reduced.
- Low Probability of Intercept(LPI) /
- Joint radar and communication /
- Network system /
- Filter Bank Multi-Carrier(FBMC) /
- Information theory

HTML全文

图 1 组网系统协同低截获探测机制图

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图 2 组网探通一体化系统各节点信号资源结构图

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图 3 3个节点雷达探测结果

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图 4 节点1雷达探测目标距离维和速度维切片

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图 5 节点1上回波信号中通信数据对雷达的干扰

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图 6 不同速度下节点2对节点1的雷达干扰

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图 7 各节点通信接收端的星座图

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图 8 不同性能指标下的KL距离

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图 9 各节点雷达和截获接收机的信噪比损失

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