摘要
大气击穿将产生很大的不利影响,高功率微波大气传输过程中应避免发生大气击穿。分析了高功率微波大气击穿的微观机理,研究了高功率微波在自生等离子体中传输时的反射和透射特性,并进行了数值模拟,从而初步探讨了HPM发射参数的优选问题。计算结果表明:在一定环境下,当HPM的频率和场强一定时,HPM发射参数存在一个合适的脉冲宽度;当HPM的频率和脉冲宽度一定时,HPM发射参数存在一个合适的场强。
Air breakdown, which leads to disadvantageous influence, should be avoided in high power microwave atmospheric propagation. The microcosmic mechanism of high power microwave air breakdown is analyzed. Reflection and transmission characteristics of HPM transmitted in self-generated plasma are studied through numerical simulation, consequently the optimization of HPM transmit parameters is discussed primarily. The results show that there is a proper pulse width for HPM frequency and field intensity under certain condition, meanwhile, there is a proper electric field intensity for HPM frequency and pulse width under certain condition.
出处
《无线电工程》
2008年第10期38-40,共3页
Radio Engineering
基金
国家863计划资助项目(2007AA803409)
关键词
高功率微波
等离子体
大气击穿
参数优选
high power microwave（HPM）
plasma
air breakdown
parameter optimization
