基于计算机绘图软件的雨滴谱测定新方法

 为寻找天然降雨和人工模拟降雨特征及设计人工降雨装置的新方法,运用计算机绘图软件与传统色斑法相结合,探索出一种新的测量雨滴直径与数据处理方法。该方法弥补了传统色斑法在观测与数据转换方面工作冗繁、精度低的缺陷,使测量下限由1mm下降到0.2mm,测量范围扩大了一个数量级,大大减少了测量工作量,并得出雨滴直径与色斑直径率定关系式。对其普适性与优越性进行了检验,结果表明:在应用新方法对降雨雨谱进行分析时,所得公式最佳。

Test method of raindrop spectrum using plotting software of computer

Raindrop spectrum observation is a key work to research characteristics of natural precipitation and simulated precipitation and design equipment of rainfall simulator precipitation. Combining plotting software of computer with traditional Color-spot method, a new method for raindrop diameter measuring and data processing was probed into. The method decreased the lower limit of measurement from 1.0 mm to 0.2 mm, it enlarged the measure range as 10 times as before, and reduced the work quantity largely. The correlation formula between raindrop diameter and Color-plot diameter was educed, whose applicability and advantages were tested. Results showed that the formula would be the best when raindrop spectrum was analyzed by improved Color-spot method.