光子学报, 2018, 47 (4): 0401002, 网络出版: 2018-03-15   

移动式多基线能见度测试系统及其测量方法

Mobile Multiple Baselines Visibility Meter and Its Measurement Approach
作者单位
1 中国民航大学 天津市空管运行规划与安全技术重点实验室 天津 300300
2 天津大学 光电信息技术教育部重点实验室 天津 300072
3 中国民航大学 天津市智能信号与图像处理重点实验室 天津 300300
摘要
针对单基线能见度测量设备采样体积单一、受噪声影响大的缺点, 设计搭建了一套移动式可变基线能见度测试系统.该系统由发射、接收、移动以及信号处理四个模块组成, 以532 nm激光作为发射光源, 通过置于滑动轨道上的小车移动定点接收发射信号实现多基线测量, 然后采用时间平均结合最小二乘法对初始信号进行处理获得最终大气能见度.系统采用单端移动接收采样法, 可从理论上消除光学污染误差.理论分析了该设备的测量方差及基线采样点模型, 并对系统进行加噪声模拟实验, 证明了其抗噪声能力; 最后在真实大气环境下对设备进行检验, 通过与实际数据对比证明其可靠性.
Abstract
In order to solve the problems that the single-baseline transmissometer is a single sampling volume device and effected by noise seriously, a mobile variable baselines visibility detection device is designed and produced. Four modules of emission, receiver, transfer and processor constitute the entire system. The emission sources is 532 nm laser. The trolley is set on the sliding track, receiving the signals in a state of continuous movement. Applying this approach, the multiple baseline visibility detection is realized. Then, the time averaging combing with least squares method is employed to compute the ultimate atmosphere visibility. This equipment only makes the use of single receiver to operate, which can eliminate the error caused by the optical system contamination in theory. By the error theoretical analysis, the detection variance and baseline sampling points models on the proposed system are exhibited, and the anti-noise performance is proved through adding noise simulations on the system. Finally, the entire device is tested in the real atmosphere, it is turned to be reliable by comparing the actual data.

李猛, 徐玖治, 熊兴隆, 马愈昭, 赵嶷飞, 张贵忠, 姚键铨. 移动式多基线能见度测试系统及其测量方法[J]. 光子学报, 2018, 47(4): 0401002. LI Meng, XU Jiu-zhi, XIONG Xing-long, MA Yu-zhao, ZHAO Yi-fei, ZHANG Gui-zhong, YAO Jian-quan. Mobile Multiple Baselines Visibility Meter and Its Measurement Approach[J]. ACTA PHOTONICA SINICA, 2018, 47(4): 0401002.

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