魏璐达.机载嵌入式云参数探测仪[J].测控技术,2020,39(9):49-54 |
机载嵌入式云参数探测仪 |
Airborne Embedded Cloud Parameter Detector |
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DOI:10.19708/j.ckjs.2020.09.009 |
中文关键词: 云参数探测 倍频TDLAS技术 激光退偏振计 蒙皮保形设计 |
英文关键词:cloud parameter detection frequency doubling TDLAS technology laser depolarization meter skin-concealed design |
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中文摘要: |
飞行器积冰预警和人工影响天气作业等方面均有对云参数探测的需求,而现有设备没有形成系统应用,且实时性较差,精度不高。设计研制了一种能同时探测云中总水含量和云粒子相态的机载云参数探测仪。相比于之前研制的云中水含量机载吊舱,该探测仪增加了云粒子相态的探测功能,并对水含量测量方法进行了改进,在外形上摒弃了吊舱安装方式而采用蒙皮保形的嵌入式减重设计,可安装于中大型无人机或各类有气象探测需求的飞机上。云中总水含量的测量采用倍频TDLAS技术,可测得固态或固液共存的混合水含量,测量范围为0~15 g/m3,测量精度为0.01 g/m3;云中粒子相态则采用激光退偏振计进行测量,通过探测目标回波偏振特性对云中相态做出判断,其中退偏振比测量范围为0~1,测量精度为0.01。结合两种技术的探测仪对云参数的探测更全面,且探测精度高、响应速度快。 |
英文摘要: |
Cloud parameter detection is required in both early warning of flying icing and artificial weather modification,but the existing equipment has not formed a system application and has poor real-time performance and low accuracy.An airborne cloud parameter detector that can simultaneously detect the total water content in the cloud and the phase state of the cloud particles is developed.Compared with the previously developed airborne pods for water content in clouds,this detector adds the detection function of cloud particle phase states and improves the water content measurement method.It abandons the pod installation method in appearance,and adopts a skin-conformal embedded weight-reduction design,which can be applied and installed on medium or large drones and various types of aircraft with weather detection requirements.The total water content in the cloud is measured by frequency doubling TDLAS technology,which can measure the mixed water content of solid or 〖JP+1〗solid-liquid coexistence,with a measurement range of 0~15 g/m3,and a measurement accuracy of 0.01 g/m3.The laser depolarization meter performs the measurement and judges the phase state in the cloud by detecting the polarization characteristics of the target echo.The measurement range of the depolarization ratio is 0~1,and the measurement accuracy is 0.01.The Detector combining two technologies can detect cloud parameters more comprehensively,with high detection accuracy and fast response speed. |
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