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    • 3. 发明申请
    • METHOD AND APPARATUS FOR IDENTIFYING A SUBSTANCE USING A SPECTRAL LIBRARY DATABASE
    • 使用光谱数据库识别物质的方法和装置
    • US20070279629A1
    • 2007-12-06
    • US11031945
    • 2005-01-07
    • Jacob GrunCharles MankaJeffrey BowlesMichael Corson
    • Jacob GrunCharles MankaJeffrey BowlesMichael Corson
    • G01J3/30G01N21/63G01N21/64G01N21/65
    • G01J3/28G01J3/44G01N21/65G01N2201/1293
    • A spectroscopic detector for identifying the presence of a first substance in the presence of another substance includes a laser for illuminating the substances at a plurality of wavelengths to induce the emission of radiation characteristic of the substance; a spectrometer for measuring the emitted radiation to obtain a plurality of spectral measurement data; and a processor for processing the data. An algorithm combines the data into a composite spectrum and a parameter characteristic of the first substance is identified while information in the composite spectrum contributed by emission of radiation from the other substance is removed to identify the presence of the first substance and obtain a characteristic spectral signature of the first substance. The signature is compared to signatures in a spectral library database, wherein at least some of the library signatures have spectral characteristics differentiated from each other by identifiable spectral characteristics caused by environmental factors.
    • 用于在存在另一物质的情况下识别第一物质的存在的光谱检测器包括用于照射多个波长的物质以激发物质的辐射特性的发射的激光; 用于测量所发射的辐射以获得多个光谱测量数据的光谱仪; 以及用于处理数据的处理器。 算法将数据组合成复合频谱,并且识别第一物质的参数特征,同时除去由来自另一物质的辐射的辐射贡献的复合谱中的信息以识别第一物质的存在并获得特征光谱特征 的第一物质。 将该签名与频谱库数据库中的签名进行比较,其中至少一些库签名具有由环境因素引起的可识别的频谱特征彼此区分的频谱特性。