| 引用本文: | 潘嘉蒙，郑曦楠，李 纯，陈 健，鲍庆龙. MIMO雷达脉内波束方向捷变抗干扰波形设计[J]. 雷达科学与技术, 2026, 24(2): 119-127.[点击复制] |
| PAN Jiameng, ZHENG Xinan, LI Chun, CHEN Jian, BAO Qinglong. MIMO Radar Intra-Pulse Beam-Agile Anti-Jamming Waveform Design[J]. Radar Science and Technology, 2026, 24(2): 119-127.[点击复制] |
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| 摘要: |
| 多输入多输出（MIMO）雷达因其波形多样性而受到广泛关注。利用这种波形分集的能力，MIMO雷达可以生成不同的波束方向图，在目标探测以及抗干扰方面具有显著优势。本文利用MIMO雷达发射方向图可以灵活设计的特点，提出了一种脉内波束方向捷变的抗干扰波形设计方法。首先将发射脉冲切分为多个子脉冲，并在子脉冲内设计不同的发射方向图，以此实现不同方向信号脉宽与脉冲重复间隔相异的效果，结合多组发射脉冲进行设计优化，可以实现主动对抗方向上发射信号的脉冲宽度和脉冲重复间隔随机捷变，同时目标探测方向参数不变以便于回波相参处理。其次，利用黎曼梯度优化不同波束间信号正交性，提升对不同方向回波以及转发式干扰的抑制能力。该方法在远距离支援旁瓣转发干扰场景下可有效消耗干扰方资源，同时保持目标探测能力，仿真实验验证了所提出的波形设计方法的有效性与性能。 |
| 关键词: MIMO雷达 抗干扰 波形设计 发射方向图优化 |
| DOI：DOI:10.3969/j.issn.1672-2337.2026.02.001 |
| 分类号:TN974 |
| 基金项目:国家自然科学基金（62201594，62201588） |
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| MIMO Radar Intra-Pulse Beam-Agile Anti-Jamming Waveform Design |
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PAN Jiameng, ZHENG Xinan, LI Chun, CHEN Jian, BAO Qinglong
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College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China
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| Abstract: |
| Multiple input multiple output （MIMO） radar has garnered significant attention due to its waveform diversity. Leveraging this waveform diversity capability, MIMO radar can generate different beam patterns, offering distinct advantages in target detection and anti-jamming performance. Exploiting on the flexible design characteristics of MIMO radar transmit beam pattern, an anti-jamming waveform design method based on intra-pulse beam-agile is proposed in this paper. Firstly, the transmit pulse is segmented into multiple sub-pulses, with different transmit beam patterns designed within each sub-pulse. This achieves varying pulse widths （PW） and pulse repetition intervals （PRI） in different directions. By coordinating multiple transmit pulse groups through optimized design, the random agility of PW and PRI can be achieved in the directions of electronic counter-countermeasures, while maintaining constant parameters in target detection directions to facilitate coherent echo signal processing. Subsequently, the Riemannian gradient method optimizes signal orthogonality between different beams, enhancing the suppression capability against echoes from various directions and repeater jamming. This method can effectively deplete the resources of jamming sources in stand-off sidelobe repeater jamming scenarios while maintaining target detection capability. Simulation experiments validate the effectiveness and performance of the proposed waveform design method. |
| Key words: multiple input multiple output （MIMO） radar anti-jamming waveform design transmit beam pattern optimization |
