基于混合大气模型的高功率微波大气击穿特性研究

项目名称： 基于混合大气模型的高功率微波大气击穿特性研究

项目编号： No.61201056

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 余道杰

作者单位： 中国人民解放军信息工程大学

项目金额： 25万元

中文摘要： 大气电离、大气击穿等非线性效应研究是高功率微波大气传输及其技术应用的首要内容。常规微波传输模型研究中不同空间层面对应不同的模型，不同层面过渡区的复杂性，以及强电场对过渡区的扰乱，使得常规微波传输模型的组合使用遇到了极大的困难，高功率微波混合大气传输模型突破低层大气、电离层、外层空间传输非线性理论分析难题，提出能够满足HPM大气传输特性研究需求并能自洽过渡到常规微波各传输模型的全链路模型。综合考虑高功率微波作用下的热致快速电子效应、碰撞频率热效应和电离频率热效应，基于高功率微波混合大气传输模型，提出高功率微波混合大气击穿模型，界定高功率微波击穿定义，提出一种PSTD-Z变换的混合算法仿真分析大气击穿阈值与规律。设计能够预置不同状态的HPM大气击穿实验装置，开展典型条件下大气传输特性与击穿实验，验证混合大气传输模型与大气击穿理论，为HPM源设计与大气传输特性研究奠定基础。

中文关键词： 高功率微波；大气传输；混合大气；大气击穿；阈值

英文摘要： Researches on atmospheric ionization, air-breakdown, and nonlinear effects are of great importance to high-power microwave propagation in the atmosphere and its technical applications. In conventional microwave transmission models, the study of different spatial levels usually corresponds to different transmission models. The complexity of the different aspects of the transition zone, and the disruption of an intensive electric field on the transition zone cause great difficulty in the combination and application of conventional microwave transmission models. The high power microwave hybrid atmospheric transmission unified model has made a breakthrough in the nonlinear theory of transmission in the lower atmosphere, the ionosphere and the outer space. The unified model will be able to meet the needs of the HPM atmospheric transmission characteristics and transit self-consistently to each conventional microwave transmission model. In consideration of the thermally induced rapid electronic effect caused by the high-power microwave, the collision frequency thermal effect and the ionization frequency thermal effect, and based on the high power microwave hybrid atmospheric transmission unified model, the paper provides a unified high power microwave air-breakdown model, a definition of high-power microwave breakdow

英文关键词： high power microwave；air propagation；mixed-atmosphere；air-breakdown；thresthod