多角度偏振遥感的水中有毒污染物多指标检测方法研究

Multi-index Detection Method for Toxic Pollutants in Water Based on Multi-angle Polarization Remote Sensing

检测水中有毒污染物过程中受到太阳耀斑的影响,不能完全检测出水样中的物质,为此提出基于多角度偏振遥感的水中有毒污染物多指标检测方法。以介质散射和目标反射光的不同偏振特征为依据建立水体光谱模型,通过检偏器消除太阳耀斑,采集水样并获得对应的紫外吸收光谱和三维荧光光谱,对光谱数据进行预处理,根据不同物质的吸光度实现水中有毒污染物多指标检测。实验结果表明:设计方法交叉反应率更高,并且线性检测范围更广,说明该检测方法的实际性能得到了提高。

Due to the influence of solar flare in the process of detecting toxic pollutants in water,the substances in water samples can not be detected completely.Therefore,a multi index detection method of toxic pollutants in water based on multi angle polarization remote sensing is proposed.Based on the different polarization characteristics of scattering light and target reflected light,a water spectral model is established.Solar flares are eliminated by a polarimeter.Water samples are collected and corresponding ultraviolet absorption spectra and three-dimensional fluorescence spectra are obtained.The spectral data are preprocessed and multi-target detection of toxic pollutants in water is realized according to the absorbance of different substances.The experimental results show that the cross reaction rate of the design method is higher,and the linear detection range is wider,which shows that the actual performance of the detection method has been improved.