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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。
According to the International Telecommunication Union’s Recommendation ITU-R P.676-7, a computational model of microwave millimeter-wave atmospheric attenuation is given. The atmospheric attenuation curves at different elevation angles under standard atmospheric conditions were calculated and the propagation of the millimeter-wave atmospheric attenuation was studied. The calculation formula of sky noise temperature is given, and the sky noise temperature at different elevation angles is analyzed and calculated.