论文部分内容阅读
云粒子探测仪效率高、结构简单,在人工影响天气的活动中起着重要的作用.本文提出一种使用单模光纤耦合输出的685nm激光作为光源的新型云粒子探测仪.该仪器利用小孔光阑切割激光光束,使用相对均匀的中央部分的光束照亮云滴,采用具有两个高速A/D转换芯片(10M/S)的嵌入式计算机来不断地获取和处理云滴粒子信号,将所有云滴的原始数据存储在嵌入式计算机的固态磁盘中进行云滴粒径分布计算,并将计算结果发送到机舱内主计算机中即时显示.实验中,使用固定尺寸的标准粒子对仪器进行标定,获得不同直径云滴粒子信号变化幅度,从而获取该探测仪对云滴粒子的响应曲线;将探头安装在飞机上进行了现场观测实验,结果表明这种探头具有云滴测量能力.
Cloud particle detector has the advantages of high efficiency and simple structure, and plays an important role in artificial weathering activities.This paper presents a new type of cloud particle detector using single-mode fiber coupled output 685nm laser as light source.The instrument uses small holes Aperture cuts the laser beam, illuminating the cloud droplets using a relatively uniform central portion of the beam, continuously capturing and processing the cloud of droplet particles using an embedded computer with two high speed A / D conversion chips (10M / S) The original data of all cloud droplets is stored in the solid state disk of the embedded computer to calculate the particle size distribution of cloud droplets, and the calculation result is sent to the host computer in the cabin for instant display. In the experiment, calibration is performed on standard particles of a fixed size , And the variation of the particle signal of cloud droplets with different diameters was obtained to obtain the response curve of the detector to the droplets of cloud droplets. The probe was installed on the aircraft for field observation and the results showed that this probe has the ability of cloud drop measurement.