高空核爆炸对无线电波传播的影响

高空核爆炸对无线电波传播的影响 THE IONIZATION EFFECTS FROM NUCLEAR EXPLOSIONS IN HIGH-ALTITUDE AND THEIREFFECT TO RADIO PROPAGATION 管荣生 Guan Rongsheng 1 first-author 李软 Li Qin 1 武汉大学电子信息学学院 武汉大学电子信息学学院 College of Electrenic Information, Wuhan University, Wuhan 430072,China College of Electrenic Information, Wuhan University, Wuhan 430072,China 分析了高空核爆炸释放出的各种辐射射线、粒子在大气中的传输情况，讨论了各种射线形成附加电离的物理机制及相应源的；临界高度，给出了瞬发和缓发核辐射在大气中产生电离的计算公式，计算了核爆炸产生的电子密度的时空分布并讨论了其分布特性，最后计算了附加电离区对短波信号的吸收情况。 A high-altitude nuclear explosions releases large quantities of energetic parti- cles and electromagnetic radiation capable of producing inoization in the atmosphere. These particles and, rays radiation character in the atmosphere are discussed. lonizations due to ex- plosion X rays , γrays, neutrons and βparticles are considered separately. The time-space dis- tribulation of additional electron density is computed and its nature is analyzed. The effects of explosion-induced ionization on the absorption of radio wave is considered and the depen- dense of the absorption on explosion characteristics , distance from the earth’s atmosphere, and frequency of the radio wave is determined. 核爆炸 附加电离区 信号吸收 nuclear explosions additional ionization regions signal absorption TN011 国家自然科学基金(61672102) 1997-03-01 2021-04-01 3