Development of Magnetic Field Measuring System for Fast Risetime Pulse

WANG Wei; SHI Yuewu; NIE Xin; ZHU Zhizhen; WANG Jinjin; YANG Jing

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Development of Magnetic Field Measuring System for Fast Risetime Pulse

更新时间：2025-12-08

- Development of Magnetic Field Measuring System for Fast Risetime Pulse
- Vol. 46, Issue 6, Pages: 2209-2218(2020)
- 作者机构：
  
  强脉冲辐射环境模拟与效应国家重点实验室(西北核技术研究院)
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：30 June 2020，
  
  Published：2020
- 稿件说明：
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WANG Wei, SHI Yuewu, NIE Xin, et al. Development of Magnetic Field Measuring System for Fast Risetime Pulse[J]. 2020, 46(6): 2209-2218.
DOI：

WANG Wei, SHI Yuewu, NIE Xin, et al. Development of Magnetic Field Measuring System for Fast Risetime Pulse[J]. 2020, 46(6): 2209-2218. DOI：

摘要

针对高空核电磁脉冲（HEMP）模拟器建设和效应研究中脉冲磁场测量的需求

介绍了一种快前沿脉冲磁场测量系统的设计、标定和使用过程。首先

依据等效电路分析了电小环天线的测量原理和频率特性;其次

建立了小环天线数值计算模型

研究了其脉冲接收特性;然后

通过电路模拟的方式研究了电路参数对测量结果的影响;最后

设计了一种快前沿B-dot传感器

结合积分器和光纤传输系统构建了一套快前沿脉冲磁场测量系统

测试了其性能指标

并在高空核电磁脉冲模拟器下取得了应用和验证。结果表明:该测量系统上升时间小于1 ns

满足快前沿脉冲磁场测量需求。

Abstract

In order to measure the pulsed magnetic field in the process of HEMP simulator construction and the effect study

a magnetic field measuring system for fast risetime pulses is developed and the procedure of the design and calibration are introduced in this paper. First

the measurement principle and frequency characteristics of an electrically small loop antenna are presented. Then the receiving characteristics of the antenna are simulated numerically to determine the proper parameters of the B-dot sensor. A circuit model is also developed to simulate the performance of the sensor. At last

along with the integrator and optical fiber transmission system

the magnetic field measuring system with a designed B-dot sensor is developed

and the system is calibrated and applied. The results show that the risetime of the measuring system is less than 1 ns and the dynamic range is wide enough for HEMP measurement.

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