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基于MWC压缩采样宽带接收机的雷达信号脉内调制识别

陈涛 柳立志 郭立民

陈涛, 柳立志, 郭立民. 基于MWC压缩采样宽带接收机的雷达信号脉内调制识别[J]. 电子与信息学报, 2018, 40(4): 867-874. doi: 10.11999/JEIT170612
引用本文: 陈涛, 柳立志, 郭立民. 基于MWC压缩采样宽带接收机的雷达信号脉内调制识别[J]. 电子与信息学报, 2018, 40(4): 867-874. doi: 10.11999/JEIT170612
CHEN Tao, LIU Lizhi, GUO Limin. Intra-pulse Modulation Recognition of Radar Signals Based on MWC Compressed Sampling Wideband Receiver[J]. Journal of Electronics and Information Technology, 2018, 40(4): 867-874. doi: 10.11999/JEIT170612
Citation: CHEN Tao, LIU Lizhi, GUO Limin. Intra-pulse Modulation Recognition of Radar Signals Based on MWC Compressed Sampling Wideband Receiver[J]. Journal of Electronics and Information Technology, 2018, 40(4): 867-874. doi: 10.11999/JEIT170612

基于MWC压缩采样宽带接收机的雷达信号脉内调制识别

doi: 10.11999/JEIT170612
基金项目: 

国家自然科学基金(61571146),中央高校基本科研业务费专项资金(HEUCFP201769)

Intra-pulse Modulation Recognition of Radar Signals Based on MWC Compressed Sampling Wideband Receiver

Funds: 

The National Natural Science Foundation of China (61571146), The Fundamental Research Funds for the Central Universities (HEUCFP201769)

  • 摘要: 针对传统宽带数字接收机在接收宽带雷达信号时产生的跨信道问题,以及低截获概率(LPI)雷达信号脉内调制盲识别问题,该文提出一种基于调制宽带转换器(MWC)离散压缩采样的新型宽带数字接收机结构对宽带雷达信号进行截获和识别。该结构采用伪随机序列将接收信号混频至基带和其他子带内,经低通滤波、降速采样获得基带压缩采样信号,解决了跨信道信号问题;又提出一种基于短时傅里叶变换(STFT)和频谱能量聚焦率检验的识别算法。首先检验STFT频谱带宽并进行调相和调频信号粗识别,然后检验压缩采样信号频谱能量聚焦率并进行具体的信号脉内调制识别。仿真结果证明了该新型接收机结构和该识别算法在低信噪比下的有效性。
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出版历程
  • 收稿日期:  2017-06-27
  • 修回日期:  2017-11-21
  • 刊出日期:  2018-04-19

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