摘要
对采用光波波段测量大气湍流强度廓线的湍流廓线激光雷达进行了研究。利用焦点附近的大气瑞利后向散射作为测量信标测量湍流信息,当聚焦高度不同时,可以测得不同高度的整层信息,从而可以得到一系列高度的整层湍流信息,最后通过算法得到分层的大气湍流廓线。介绍了湍流廓线激光雷达系统的组成原理和系统结构,采用像增强器的控制系统使得系统的有效测试距离达到15 km;通过与传统测量方法的对比,得出了可以作为湍流强度廓线测量工具的结论。最后展望了该系统的应用前景。
A new system is developed for real-time monitoring of the optical turbulence altitude profile. A laser beam is transmitted and focused on certain height to form an artificial beacon. Its backscattering light propagates through the atmosphere. The lidar receives the signal coming from the scatter light of beacon and, at the same time, obtains the information of the atmosphere turbulence from the beacon to the receiver. When the laser beam is focused on different height, the lidar receives the back-scattering light coming from the corresponding beacon in that height, thus an atmosphere turbulence profile could be obtained through algorithms. The profile of the refractive index structure constant is presented using the lidar and this lidar system can be used for turbulence profiles in contrast with the traditional measurements.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2006年第10期1602-1604,共3页
High Power Laser and Particle Beams
基金
国家863计划项目资助课题
中国高技术研究和发展项目资助课题
关键词
激光大气传输
湍流廓线
瑞利信标
激光雷达
Atmospheric turbulence
Turbulent profile
Rayleigh beaconing
Lidar
