摘要
依据国际电信联盟的ITU_R P.676-7建议,给出了微波毫米波大气衰减的计算模型。计算了标准大气条件下,不同仰角下的大气衰减曲线,研究了毫米波大气衰减的传播规律。给出了天空噪声温度的计算公式,分析计算了不同仰角的天空噪声温度。
In this paper,according to ITU_R P.676-7 recommendation of international telecommunication union,calculation model of atmospheric attenuation of microwave and millimeter wave is given.Curves of atmospheric attenuation are calculated under conditions of standard atmospheric gases and different elevation angles,propagation rules of millimeter atmospheric attenuation are researched.Calculation formula of sky noise temperature is given,and sky noise temperatures are analyzed and calculated at different elevation angles.
出处
《微波学报》
CSCD
北大核心
2015年第S2期299-302,共4页
Journal of Microwaves
关键词
微波毫米波
大气衰减
大气压力
大气温度
水蒸气密度
天空噪声温度
Microwave and millimeter
atmospheric attenuation
gases pressure
gases temperature
water vapor density
sky noise temperature
