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532nm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.
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.
作者
李猛
徐玖治
熊兴隆
马愈昭
赵嶷飞
张贵忠
姚键铨
LI Meng1, 2 , XU Jiu-zhi3 , XIONG Xing-long3 , MA Yu-zhao3 , ZHAO Yi fei3 , ZHANG Gui zhong2 , YAO Jian-quan2(1 Key Laboratory of Operation Programming ＆ Safety Technology of Air Traffic Management, Civil Aviation University of China , Tianjin 300300, China;2 Key Lab of Optoelectronic Information Technology （Ministry of Education）, Tianjin University, Tianjin 300072, China;3 Tianjin Key Laboratory for Advanced Signal Processing, Civil Aviation University of China , Tianjin 300300, China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2018年第4期196-203,共8页
Acta Photonica Sinica
基金
国家自然科学基金(Nos.U1433202
U1533113
U1633109
U1533117)
中央高校基础研究基金(No.3122016D031)资助~~
关键词
能见度
探测
最小二乘法
可变基线
抗噪声
Visibility
Detection
Least squares method
Variable baselines
Anti-noise
