飞行器太赫兹波斜路径地面探测大气吸收衰减
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- 英文论文题名：Aircraft THz Wave Slant Path Ground Detection Atmospheric Absorption Attenuation
- 论文作者：杨晓帆 ; 王亚华 ; 曾勇虎 ; 汪连栋
- 英文论文作者：YANG Xiao-fan ; WANG Ya-hua ; ZENG Yong-hu ; WANG Lian-dong ; State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System
- 年：2016
- 作者机构：电子信息系统复杂电磁环境效应国家重点实验室;
- 论文关键词：太赫兹波 ; NCEP再分析资料 ; 倾斜路径传输 ; 大气吸收衰减
- 英文论文关键词：terahertz wave ; NCEP reanalysis data ; slant route transmission ; atmospheric absorption attenuation
- 会议召开时间：2016-08-17
- 会议录名称：2016年全国军事微波、太赫兹、电磁兼容技术学术会议论文集
- 语种：中文
- 分类号：V248.1;O441.4
- 学会代码：WBXB
- 会议名称：2016年全国军事微波、太赫兹、电磁兼容技术学术会议
- 会议地点：中国陕西西安
- 主办单位：中国电子学会微波分会、天线与微波技术重点实验室
- 学会名称：《微波学报》编辑部
- 页数：4
- 文件大小：723k
- 原文格式：D
- 会议级别：全国
摘要
太赫兹波指频率在0.1THz~10THz之间的电磁波,具有频带宽、能量低、透射性强等优点,在空间探测领域有重要的应用前景。目前太赫兹波的大气吸收模型多为固定大气传播环境的水平传输衰减模型,而在机载SAR进行地面探测等实际应用中,其雷达信号则将跨越连续变化的大气环境实际沿倾斜路径进行传播,因此迫切需要对太赫兹波的倾斜大气传播路径吸收衰减进行分析。本研究以ITU-R大气吸收衰减模型为基础,首先从理论上推导出倾斜路径的太赫兹波大气传输衰减计算方法;而后结合公开NCEP再分析数据资料,对中国区域2012年度大气气象参数进行统计而计算太赫兹频段水氧气吸收衰减后,进行了从近地到临近空间,不同辐照距离下的机载SAR雷达信号倾斜路径大气吸收衰减计算。
Terahertz(THz) wave is 0.1 to 10 THz electromagnetic wave, has the advantages of wide frequency band, low energy and high transmission, show important application potential at the field of space exploration. Up to now, the established THz wave atmospheric absorption attenuation model is mostly under horizontal route, not slant. However, at aircraft SAR radar THz wave ground detection application situation, its radar signal would penetrate through changing atmospheric environment, along slant path transmission, which refers to THz wave slant path atmospheric absorption attenuation analysis. Firstly, based on International Telecommunication Union Radio communication Sector's atmospheric absorption attenuation model, this paper theoretically deduces THz wave atmospheric slant route absorption attenuation calculation method. Then, reference to reanalysis data selected from National Centers for Environmental Prediction(NCEP), paper makes 2012 annually statistical atmospheric parameters and calculates THz band water vapor and Oxygen absorption attenuation, finally completes aircraft SAR radar THz wave ground detection atmospheric absorption attenuation calculation at different detection distances.
Terahertz(THz) wave is 0.1 to 10 THz electromagnetic wave, has the advantages of wide frequency band, low energy and high transmission, show important application potential at the field of space exploration. Up to now, the established THz wave atmospheric absorption attenuation model is mostly under horizontal route, not slant. However, at aircraft SAR radar THz wave ground detection application situation, its radar signal would penetrate through changing atmospheric environment, along slant path transmission, which refers to THz wave slant path atmospheric absorption attenuation analysis. Firstly, based on International Telecommunication Union Radio communication Sector's atmospheric absorption attenuation model, this paper theoretically deduces THz wave atmospheric slant route absorption attenuation calculation method. Then, reference to reanalysis data selected from National Centers for Environmental Prediction(NCEP), paper makes 2012 annually statistical atmospheric parameters and calculates THz band water vapor and Oxygen absorption attenuation, finally completes aircraft SAR radar THz wave ground detection atmospheric absorption attenuation calculation at different detection distances.
引文
[1]P H Siegel.Terahertz technology[J].IEEE Trans.on Microwave Theory Tech.,2002,50:910-928
[2]李海英,吴振森林乐科,卢昌胜,张鑫.太赫兹波在烟尘气溶胶中的传播特性[J].微波学报,2015,31(S1):32-35LI Hai-ying,WU Zhen-sen,LIN Le-ke,LUChang-sheng,ZHANG Xin.The Propagation Characters of Terahertz Wave in the Soot and Fog Medium[J].Journal of Microwaves,2015,31(S1):32-35
[3]刘超,杨明,刘志刚.近太赫兹频段功率源技术发展与应用[J].微波学报,2015,31(S1):6-9LIU Chao,YANG Ming,LIU Zhi-gang.Developments and Application in Near-Terahertz Power Devices[J].Journal of Microwaves,2015,31(S1):6-9
[4]刘丰,朱忠博,崔万照等.太赫兹技术在空间领域应用的探讨[J].太赫兹科学与电子信息学报,2013,11(6):857-866
[5]Radio communications Bureau,International Telecommunications Union.Attenuation by atmospheric gases.Recommendation ITU-R P.676-9,February 2012
[2]李海英,吴振森林乐科,卢昌胜,张鑫.太赫兹波在烟尘气溶胶中的传播特性[J].微波学报,2015,31(S1):32-35LI Hai-ying,WU Zhen-sen,LIN Le-ke,LUChang-sheng,ZHANG Xin.The Propagation Characters of Terahertz Wave in the Soot and Fog Medium[J].Journal of Microwaves,2015,31(S1):32-35
[3]刘超,杨明,刘志刚.近太赫兹频段功率源技术发展与应用[J].微波学报,2015,31(S1):6-9LIU Chao,YANG Ming,LIU Zhi-gang.Developments and Application in Near-Terahertz Power Devices[J].Journal of Microwaves,2015,31(S1):6-9
[4]刘丰,朱忠博,崔万照等.太赫兹技术在空间领域应用的探讨[J].太赫兹科学与电子信息学报,2013,11(6):857-866
[5]Radio communications Bureau,International Telecommunications Union.Attenuation by atmospheric gases.Recommendation ITU-R P.676-9,February 2012