微粒光散射图像获取方法的改进

测量微粒粒度分布时，其光散射强度空间谱的准确获取以及其数值处理是决定测量精度的关键，研究表明，常用的二极管环靶空间分辨率低，且在宽信号响应域内响应为非线性，而单色线阵图像传感器BW－CCD对大信号响应时会产生响应饱和，从而直接影响测量精度，对此，该文提出一种以真彩面阵图像传感器3C－CCD作传感器获取图像，对大信号单色响应饱和区进行RGB三色均衡拟合，有效地解决了大信号饱和问题，通过图像的数值处理，最终取得较好的实验结果。

Improving to the Processing of Scattering Image from the Particles

In the measuring the distribution of the particle's diameter, it is a key technology how to get a good scattering image and how to process the data of it.The research shows that there are lower precision and nonlinear response in wide range when using a SSPD,but for a BW CCD,there is saturation effect for big signal response,so the measuring precision is affected. In this paper, a color 3C CCD was used to replace a SSPD or WB CCD,and the RGB average method was put forward to solve the problem of the saturation. A better result in the experiment was obtained after data processing.