正交信号校正，一种预处理算法，用来消除光谱中与浓度无关的信息，增强浓度与光谱的相关性-Orthogonal signal correction, a preprocessing algorithm, to eliminate the information in the spectrum unreleated with the target concentration, enhanceing the correlation between concentration and spectral

对数正态分布函数的源码，用来测试颗粒物浓度时亲测可用，值得下载(The source of lognormal distribution function is used to test particulate matter concentration, and pro test is available, which is worth downloading.)

柯西分布函数的源码，用来测试颗粒物浓度时亲测可用，值得下载(The source of Cauchy distribution function can be used to test particulate matter concentration, and it can be downloaded.)