| 摘要: |
| 频谱弥散干扰是一种用于对抗脉冲多普勒雷达系统的典型有源转发式干扰。由于频谱弥散干扰分量与发射波形具有强相参性，干扰回波经雷达系统脉冲压缩处理后会产生大量的梳状假目标，达到对真实目标的遮蔽及压制效果。针对频谱弥散干扰抑制难题，本文通过协同配置雷达系统的多发射脉冲参数，提出一种基于多波形互补设计的主动式干扰对抗方法。在具体实现过程中，首先建立了多波形体制下的频谱弥散干扰参数化模型，然后在干扰响应最小化准则与波形互补脉压旁瓣最小化准则下给出了兼顾干扰对抗与目标探测的波形设计模型；为了进一步求解波形参数，推导了波形参数的梯度表达式，给出了基于共轭梯度算法的波形求解方法；最后，基于数值仿真数据与电磁计算数据的实验结果表明了所提方法的有效性。 |
| 关键词: 互补波形设计 频谱弥散干扰 干扰抑制 共轭梯度法 |
| DOI：DOI:10.3969/j.issn.1672-2337.2026.01.012 |
| 分类号:TN974 |
| 基金项目:国家自然科学基金（U22B2002） |
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| Smeared Spectrum Jamming Suppression Method Based onComplementary Waveform Design |
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YANG Xian
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1. The 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050081, China;2. Hebei Key Laboratory of Electromagnetic Spectrum Cognition and Control, Shijiazhuang 050081, China
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| Abstract: |
| Smeared spectrum jamming is a typical active repeater jamming technique used to counter the pulse?Doppler radar system. Due to the strong coherence between the smeared spectrum jamming component and the transmit waveform, the jamming signals generate numerous comb?like false targets after the pulse compression processing by the radar system, so as to achieve the effects of masking and suppressing the real targets. Aiming at the problem of smeared spectrum jamming suppression, this paper proposes an active jamming countermeasure method based on multi?waveform complementary design by collaboratively configuring the multi?transmitting pulse parameters of the radar system. In the implementation process, firstly, a parametric model of smeared spectrum jamming under a multi?waveform system is established. Then, under the criteria of minimizing the jamming response and the waveform complementary pulse compression sidelobe, a waveform design model considering both jamming suppression and target detection is presented. To further acquire the waveform parameters, the gradient expression of the waveform parameters is derived, followed by a waveform optimization method based on the conjugate gradient algorithm. Finally, the experimental results based on numerical simulations and electromagnetic computation data demonstrate the effectiveness of the proposed method. |
| Key words: complementary waveform design smeared spectrum jamming jamming suppression conjugate gradient method |
