基于电场探头的雷达强脉冲场时域快速测量

Fast Measurement of Radar High Pulse Field in Time Domain Based on Electric Field Probe

雷达强脉冲场的准确测量对研究电磁环境特征和装备电磁安全性具有重要意义。雷达强脉冲场常用频域测量方法耗时,且测量结果与分辨率带宽设置相关,设置不当会造成错误结果。为此文章在分析脉冲信号的时频域特征,并结合时域测量法和场强探头法测量原理研究的基础上,提出了基于示波器和场强探头的强脉冲场峰值和平均值场强快速测量方法,解决了大功率雷达脉冲近场分布快速测量的难题,同时给出了组合测量方法中场强探头的适用边界条件,实验验证结果表明场强探头与示波器组合法测量误差小于1dB,且可相互验证。

The accurate measurement of radar high pulse field is of great significance to the study of the characteristics of electromagnetic environment and electromagnetic safety of the equipment. For radar high pulse field, the typical used frequency-domain measurement method is time-consuming, and the measurement results are related to the resolution bandwidth setting. The inappropriate setting may lead to wrong results. Based on the analysis of the time-frequency characteristic of pulse signal and the research on the measuring principle of oscilloscope and field intensity probe, this paper puts forward a fast measuring method of peak and average field intensity based on oscilloscope and field intensity probe. The problem of fast measurement of high power radar pulse near field distribution is solved, and the boundary conditions of field intensity probe in the combined measurement method are given. The experimental results show that the error of the combined measurement method of field intensity probe and oscilloscope is less than 1 dB and can be verified mutually.