激光云高仪和毫米波云雷达协同测量云底高技术的融合算法研究

Research on fusion algorithm of laser ceilometer and millimeter-wave cloud radar collaborative measurement of cloud base height

基于多设备协同测云技术,围绕对云底高的协同观测而开展,依据2015年1月1日至2015年5月31日中国气象局气象大气探测试验基地HY-CL51激光云高仪和Ka波段毫米波云雷达的观测数据进行研究,提出了基于激光云高仪和毫米波云雷达协同测量云底高技术的融合算法。通过3种输出数据对比研究发现,融合后的数据相比于单独的激光云高仪或毫米波云雷达数据,输出的最终云底高数据准确度较高,同时提高了毫米波云雷达低云区数据获取率,改善了激光云高仪受能见度影响测量精度低的问题,一定程度上解决了缺测的状况,具有一定的应用价值。

This research is based on multi-device coordinated cloud measurement technology,which focuses on the coordinated observation of cloud base height.It is mainly based on the data observed by HY-CL51 laser ceilometer and Ka-band millimeter-wave cloud radar from the China Meteorological Administration's Meteorological and Atmospheric Detection Center(from January 1 to May 31,2015).A fusion algorithm based on laser ceilometer and millimeter-wave cloud radar co-measurement of cloud base height is proposed.The research indicates that the fused data output has good accuracy of cloud base height than the data under single device.The proposed algorithm improves the data acquisition rate of the lower cloud area of the millimeter-wave cloud radar,and it also improves the measurement accuracy of laser ceilometer affected by visibility.And,it improves the situation of lack of testing and has great application value.