强激光与粒子束, 2014, 26 (3): 033201, 网络出版: 2014-03-31   

高灵敏度电晕放电辐射信号探测方案

High sensitivity detection scheme for corona discharge radiation signal
作者单位
军械工程学院 静电与电磁防护研究所, 石家庄 050003
摘要
为了实现复杂电磁环境下电晕放电辐射信号的探测,从信号特征入手,通过对电晕电流的计算和模拟实验,揭示了电晕放电的时、频域特征。在分析自然环境下噪声频率分布规律的基础上,设计了窄频段探测技术,通过设计特定频段的定向天线、增加高频宽带低噪声放大器、应用数字处理终端等方式,搭建了高灵敏度的微弱信号探测系统,成功探测到自然环境中600 m外的电晕放电辐射信号。实验结果充分证明了电晕放电辐射信号的远距离探测的可行性,为电晕放电目标探测提供了重要的技术手段。
Abstract
In order to detect corona discharge radiation signal in complex electromagnetic environment, a simulation platform was built to analysis the time domain and frequency domain features of corona discharge radiation signal. Combined with the noise frequency distribution measured in natural environment, the arrow-band detection technology was used. By designing a specific band directional antenna, designing a high bandwidth low-noise amplifier, and the application of digital processing terminals, etc., a high-sensitivity detection system for weak signals was built. And the corona discharge radiation signal was successfully detected by the system at the distance of 600 meters. The feasibility of detecting corona discharge radiation signal in remote detection was proved by the experimental results. And an important detection technique for targets was provided.
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朱利, 刘尚合, 张悦, 樊高辉. 高灵敏度电晕放电辐射信号探测方案[J]. 强激光与粒子束, 2014, 26(3): 033201. Zhu Li, Liu Shanghe, Zhang Yue, Fan Gaohui. High sensitivity detection scheme for corona discharge radiation signal[J]. High Power Laser and Particle Beams, 2014, 26(3): 033201.

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