摘要
基于分子光谱数据库HITRAN中的谱线参数和传播理论得到了氧气分子、氮气分子和水蒸气分子的吸收系数,同时计算了氧气、氮气2种单组分气体以及水蒸气对太赫兹波辐射在1 km上的吸收衰减系数。在0.1 THz-1 THz频率范围内与ITU-R P.676进行比较,结果显示,2种结果吻合较好,尤其在吸收带。这也间接验证了本文计算方法在太赫兹波其他频段吸收衰减计算结果的正确性。
The absorption specifics of nitrogen, oxygen and vapor in terahertz band are calculated based on the High-resolution TRANsmission（HITRAN） molecular spectroscopic database and propagation theory as well as their absorption specific attenuation to Terahertz-wave. They are then compared with the results obtained by ITU-R P.676 in frequency 0.1 THz-1 THz. The comparison shows that the results agree well with each other especially in the absorb band, which has validated the calculation of specific attenuation of atmospheric gases in other frequency band of THz wave.
出处
《太赫兹科学与电子信息学报》
2013年第3期346-349,共4页
Journal of Terahertz Science and Electronic Information Technology
基金
国家自然科学基金资助项目(61179003)
关键词
太赫兹波
传输吸收
单组分气体
吸收系数衰减
Terahertz-wave- absorption
atmospheric gases
absorption specific attenuation
