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| Spatial Distribution Characteristics of High-altitude Nuclear Electromagnetic Pulse |
| Received:April 14, 2024 Revised:June 14, 2024 |
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| DOI：10.7643/issn.1672-9242.2024.10.019 |
| KeyWord:high-altitude nuclear electromagnetic pulse equipment environment high-altitude nuclear explosion numerical calculation electric field intensity spatial distribution |
| Author | Institution |
| YANG Ji |
Strategic Technology Equipment Development Center, China Academy of Engineering Physics, Sichuan Mianyang , China |
| LI Yuchun |
Strategic Technology Equipment Development Center, China Academy of Engineering Physics, Sichuan Mianyang , China |
| LIU Qiushi |
Strategic Technology Equipment Development Center, China Academy of Engineering Physics, Sichuan Mianyang , China |
| XIONG Lei |
Strategic Technology Equipment Development Center, China Academy of Engineering Physics, Sichuan Mianyang , China |
| DONG Jian |
Strategic Technology Equipment Development Center, China Academy of Engineering Physics, Sichuan Mianyang , China |
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| Abstract: |
| The work aims to evaluate the high-altitude nuclear electromagnetic pulse within a certain range, calculate the electric field intensity of the high-altitude nuclear electromagnetic pulse and investigate the spatial distribution characteristics of the electric field intensity. Based on the physical process of high-altitude nuclear explosion, combined with the existing theoretical results and related calculation formulas, the numerical calculation process of field strength of early high-altitude nuclear electromagnetic pulse generated by high-altitude nuclear explosion was deduced, and the corresponding calculation program was compiled.The time-domain waveform of nuclear electromagnetic pulse and the distribution of electric field intensity in the observation range under the specified condition were obtained. The calculation results were consistent with the variation law in IEC standard. In addition, the electric field intensity under different explosion equivalents, explosion heights, explosion positions and different observation positions was calculated, and the spatial distribution characteristics of high-altitude nuclear electromagnetic pulse were analyzed. The effects of main calculation parameters on the electric field intensity and time domain waveform of high altitude nuclear electromagnetic pulse were discussed. With the increase of explosion height, the peak value of high-altitude nuclear electromagnetic pulse field intensity decreases, and the time to reach the peak value of field intensity is delayed. With the increase of the explosion equivalent, the peak value of the high-altitude nuclear electromagnetic pulse field intensity will also increase, but the growth rate will slow down with the increase of the equivalent until it tends to be saturated, and the time to reach the peak value of the electric field will be relatively advanced. With the increase of latitude, the peak value of field intensity also increases. With the increase of observation height, the peak value of field strength increases linearly. |
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