A method for generating high power comb spectrum microwave
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摘要: 梳状谱微波通常指具有中心频率，频谱分布与梳子形状相似，在一定带宽内多个频点具有能量分布的电磁波。梳状谱微波在电子对抗方面具有其它对抗方式所不具备的独特优势，在通信对抗、雷达对抗等领域显现出了极好的应用前景。该文介绍了一种大功率梳状谱微波产生方法，利用路径编码脉冲压缩技术将宽带连续波源产生的微波进行压缩，获得了中心频率2.85 GHz、频带宽度1 GHz、频谱间隙250 kHz、峰值功率160 kW的梳状谱微波。后续实验进一步表明，利用该方法获取的梳状谱微波的中心频率、频带宽度、频谱间隙都是灵活可调的，能够应用在多种电子对抗场景当中提升对抗干扰能力。Abstract: Comb spectrum microwave usually refers to electromagnetic wave with center frequency spectrum distribution similar to comb shape, and energy distribution at multiple frequency points within a certain bandwidth. Comb spectrum microwave has unique advantages in electronic countermeasure that other countermeasure ways do not have, and shows an excellent application prospect in communication countermeasure, radar countermeasure and other fields. This paper introduces a method to generate high power comb spectrum microwave. The microwave generated by wideband continuous wave source is compressed by using channel encoding pulse compression technology to obtain the comb spectrum microwave with center frequency of 2.85 GHz, bandwidth of 1 GHz, spectral gap of 250 kHz and peak power of 160 kW. The subsequent experiments further show that the center frequency, bandwidth and spectral gap of comb spectrum microwave obtained by this method are flexible and adjustable, which can be used in a variety of electronic countermeasure scenarios to improve the anti-jamming capability.
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Key words:
- high power /
- electronic countermeasure /
- comb spectrum signal /
- channel encoding /
- pulse compression
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图 1 梳状谱信号时域波形和频域波形
Figure 1. Time domain waveform and frequency domain waveform of comb spectrum signal
图 2 路径编码脉冲压缩原理和多径效应示意图
Figure 2. Schematic diagram of channel encoding pulse compression principle and multipath effect
图 3 路径编码脉冲压缩方法操作流程
Figure 3. Operation flow of channel encoding pulse compression method
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