| 摘要: |
| 基于压缩感知理论的随机步进频率高频雷达（Random Stepped Frequency High Frequency Radar，RSF HFR）稀疏重构性能受信号参数影响较大。针对上述问题，本文首先构建了RSF HFR二维稀疏重构模型。其次，利用感知矩阵互相关性能（最大互相关系数、平均互相关系数）对影响RSF HFR重构性能的因素进行分析，得出在相同合成带宽条件下，采用子脉冲随机步进方式、增加发射子脉冲个数的方式可以得到更好的RSF HFR二维稀疏重构性能的结论。最后，利用仿真实验对上述结论进行了验证。本文的研究为RSF HFR的波形设计提供了方向，具有重要的实际应用价值。 |
| 关键词: 随机步进频率信号 高频雷达 波形设计 稀疏重构 |
| DOI：DOI:10.3969/j.issn.1672-2337.2020.02.009 |
| 分类号:TN957 |
| 基金项目:国家自然科学基金(No.61671469)；空军预警学院“厚基工程”重点资助项目 |
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| Reconstruction Performance Analysis of High Frequency Radar Based on RSF Signal |
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LYU Mingjiu，SUN Zongliang，YANG Jun，DU Xiong，DING Kai
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1. Unit 95980 of PLA，Xiangyang 441000，China;2.
2.Air Force Early Warning Academy，Wuhan 430019，China
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| Abstract: |
| The sparse reconstruction performance of random stepped frequency over the horizon radar based on compressed sensing theory is greatly affected by signal parameters. To solve these problems，this paper first constructs a two dimensional sparse reconstruction model of RSF HFR. Secondly，the factors affecting the performance of RSF HFR reconstruction are analyzed by using the cross correlation performance of sensing matrix (maximum cross correlation coefficient，average cross correlation coefficient). It is concluded that the two dimensional sparse reconstruction performance of RSF HFR can be improved by adopting the random step mode of sub pulse and increasing the number of emitter pulses under the same synthetic bandwidth. Finally，the above conclusions are verified by simulation experiments. This research provides a direction for waveform design of RSF HFR and has important practical application value. |
| Key words: random stepped frequency signal high frequency radar waveform design sparse reconstruction |
