【作者】 林琳； 朱莉；

【Author】 LIN Lin;ZHU LI;Department of Detection and Control Engineering,Institute of Electro-Optical,Nanjing University of Science and Technology;

【机构】 南京理工大学电光学院探测与控制工程系；

【摘要】 毫米波在传播过程中受大气衰减和降雨的影响较大,这个问题的解决有利于提高毫米波系统的作用距离和测量精度,关系到毫米波系统的应用和开发进程。本文重点分析118.8GHZ非大气窗口毫米波在传播过程中的大气衰减以及降雨对其影响,并对比90~300GHz毫米波段其他频率毫米波传播特性。理论计算表明118.8GHz非大气窗口在传播过程中受大气和降雨的总衰减在常温常压下可达到25dB/km以上。经过与大气窗口的仿真分析对比,结果显示该非大气窗口频段具有优越的反侦察性能和抗干扰性能。更多还原

【Abstract】 Millimeter wave are greatly influenced by atmospheric attenuation and rainfall during propagation.To solve this problem will help improve the operating distance and accuracy of millimeter-wave systems,as well as the application and development process.This paper focuses on the atmospheric attenuation and rainfall effects on a non-atmospheric window of118.8GHz during propagation comparing with other frequency between 90~ 300 GHz.Theoretical calculation shows that the total propagation attenuation of 118.8GHz non-atmospheric window caused by the atmosphere and rainfall can reach more than25dB/km at normal temperature and pressure.By comparing with the simulation of the atmospheric window,it shows that the non atmospheric window frequency band has superior anti reconnaissance performance and anti jamming performance.更多还原