摘要
给出了复杂电磁环境下,提高测量磁场强度信噪比的方法,采用多环线圈提高测量探头的灵敏度,从罗氏线圈测量磁场强度的基本原理出发,推导出了由测量结果还原出待测磁场强度的一般公式,并给出了由待测信号的基本特征确定线圈最佳环数的估算方法。将该测量方法应用于"闪光二号"进行的实验中,测量结果与数值计算结果吻合较好。
In system generated electromagnetic pulse （SGEMP） experiment, a novel method is presented for increasing signal to noise ratio（SNR） of magnetic field strength. First, the sensitivity of the probe is improved by using the multi-loop coil, and a general formula for measuring magnetic field strength is derived from the basic principle of Rogowski coil. Then, the optimum number of coils of the probe is determined by the characteristics of the magnetic field. The results show that the measured results carried out on Flash-II accelerator agree well with the results of numerical calculations.
出处
《现代应用物理》
2016年第3期29-32,共4页
Modern Applied Physics
关键词
磁场强度测量
信噪比
罗氏线圈
灵敏度
measurement of magnetic field strength
SNR
Rogowski coil
sensitivity
