公开(公告)号：US5801826A

公开(公告)日：1998-09-01

申请号：US802169

申请日：1997-02-18

Applicant: Richard Ernest Williams

Inventor： Richard Ernest Williams

IPC: G01J3/28 ,  G01J3/06 ,  G01J3/32

CPC classification number: G01J3/433 ,  G01J3/28

Abstract: Complex atomic or molecular spectral signatures embedded in interfering background spectra are very rapidly recognized by a spectrometric device that employs precise sweep rate control with signal slope extraction. Very fast optics become feasible. High signal to noise ratios are attained in each of three operational modes. The first, PURGE, is frequently invoked and stores an ambient background pattern in differentiated form. The second, TARGET, stores a signature derived from a target substance placed within the invention's sensing range. The signature retains only signal derivatives that significantly depart from those encountered during PURGE. A SEEK mode employs a similar derivative extraction algorithm, and searches for matches to TARGET signatures stored in a memory bank. During SEEK, pattern correlations to stored targets are sensed, and results displayed.

Abstract translation: 嵌入干涉背景光谱中的复杂原子或分子光谱特征通过使用信号斜率提取的精确扫描速率控制的光谱仪器非常快速地识别。 非常快的光学变得可行。 在三种操作模式中的每一种都能实现高信噪比。 经常调用第一个PURGE，并以不同的形式存储环境背景图案。 第二个“目标”（TARGET）存储从放置在本发明的感测范围内的目标物质衍生的签名。 签名只保留与PURGE中遇到的信号衍生物有明显差异的信号衍生物。 SEEK模式采用类似的派生提取算法，并搜索与存储在存储体中的TARGET签名的匹配。 在SEEK期间，感测与存储的目标的模式相关性，并显示结果。