低层大气中氧气吸收的研究  

Study of Oxygen Absorption in Lower Atmosphere

作　　者：胡大璋[1] 

机构地区：[1]中国电波传播研究所

出　　处：《电波科学学报》1996年第3期27-32,共6页Chinese Journal of Radio Science

摘　　要：根据中国地面１０４个气象台站探空Ｐ—Ｔ—Ｕ剖面数据和大气吸收谱线理论，研究了低层大气吸收率随频率、地区、海拔高度、时间的变化特性。给出了北京地区地球表面大气复折射率随频率的变化；１０００ＧＨｚ地球表面大气复折射率中国地域分布。也给出了北京地区低层大气中氧气吸收的压力展宽效应和中国地区的大气吸收率高度剖面模型一双层指数统计模型。并用该模型计算了雷达信号的大气吸收衰减。低层大气吸收的研究结果可用于雷达、通信、广播、遥感等无线电系统的设计和使用。Based on radiosonde data of P-T-U profile at 104 meterorologic stations in China and line- byline atmospheric absorption theory, the charcteristic of atmospheric absorption with frequency, Tegion, altitude andtime are presented in tills paper. A variation of atmospheric absorption with frequency in China and a contours ofcomplex refractive index at 1000GHz in China are presented. The pressure broad effect of oxygen absorption and amodel of atmospheric refractive illdex with height-double exponent model in China are also presented. With thismodel, a ratlar attenuation due to atTnospheric absorption are given. They are used for design and application onradar, communication, broadcast and remote sensing.

关 键 词：低层大气吸收 氧气吸收 电波 压力展宽 衰减率 

分 类 号：TN011.3[电子电信—物理电子学] P421[天文地球—大气科学及气象学]