公开(公告)号：US08164742B1

公开(公告)日：2012-04-24

申请号：US11779457

申请日：2007-07-18

申请人： Arthur H. Carrieri ,  Erik S. Roese ,  David J. Owens ,  Jonathan C. Schultz ,  Michael V. Talbard ,  Pascal I. Lim ,  Kevin C. Hung ,  Jerold R. Bottiger

发明人： Arthur H. Carrieri ,  Erik S. Roese ,  David J. Owens ,  Jonathan C. Schultz ,  Michael V. Talbard ,  Pascal I. Lim ,  Kevin C. Hung ,  Jerold R. Bottiger

IPC分类号： G01C3/08

CPC分类号： G01N21/21 ,  G01S7/4811 ,  G01S7/499 ,  G01S17/88

摘要： An optomechanical switching device, a control system, and a graphical user interface for a photopolarimetric lidar standoff detection that employs differential-absorption Mueller matrix spectroscopy. An output train of alternate continuous-wave CO2 laser beams [ . . . L1:L2 . . . ] is directed onto a suspect chemical-biological (CB) aerosol plume or the land mass it contaminates (S) vis-à-vis the OSD, with L1 [L2] tuned on [detuned off] a resonant molecular absorption moiety of CB analyte. Both incident beams and their backscattered radiances from S are polarization-modulated synchronously so as to produce gated temporal voltage waveforms (scattergrams) recorded on a focus at the receiver end of a sensor (lidar) system. All 16 elements of the Mueller matrix (Mij) of S are measured via digital or analog filtration of constituent frequency components in these running scattergram data streams (phase-sensitive detection). A collective set of normalized elements {ΔMi,j} (ratio to M11) susceptible to analyte, probed on-then-off its molecular absorption band, form a unique detection domain that is scrutinized; i.e., any mapping onto this domain by incoming lidar data—by means of a trained neural network pattern recognition system for instance—cues a standoff detection event.

摘要翻译： 光学机械开关装置，控制系统和用于使用差分吸收Mueller矩阵光谱的光偏振激光雷达检测的图形用户界面。 交替连续波CO2激光束的输出列[ 。 。 L1：L2。 。 。 ]被引导到可疑化学生物（CB）气溶胶羽流或其相对于OSD污染的陆地（S），其中L1 [L2]调谐到CB分析物的共振分子吸收部分[失谐] 。 来自S的入射光束和它们的反向散射辐射均被同步偏振调制，以便产生记录在传感器（激光雷达）系统的接收器端的焦点上的门控时间电压波形（散点图）。 S的Mueller矩阵（Mij）的所有16个元素通过数字或模拟过滤在这些运行散点图数据流（相敏检测）中的组成频率分量来测量。 对分析物敏感的一组归一化元素{＆Dgr; Mi，j}（与M11的比例）形成了一个独特的检测结构域，被检测出来; 即通过输入的激光雷达数据通过训练的神经网络模式识别系统对该域进行任何映射，例如提示了间隔检测事件。

公开(公告)号：US08514392B1

公开(公告)日：2013-08-20

申请号：US12683154

申请日：2010-01-06

申请人： Arthur H. Carrieri ,  Jack Copper ,  David J. Owens ,  Erik S. Roese ,  Jerold R. Bottiger ,  Kevin C. Hung

发明人： Arthur H. Carrieri ,  Jack Copper ,  David J. Owens ,  Erik S. Roese ,  Jerold R. Bottiger ,  Kevin C. Hung

IPC分类号： G01J3/447

CPC分类号： G01J3/447 ,  G01J4/04 ,  G01N21/21 ,  G01N21/3504

摘要： A system, apparatus, and method of generating Stokes vectors, a Mueller matrix, and polarized scattering from an aerosol aggregate includes providing an incident infrared laser beam; causing the incident infrared laser beam to be polarization-modulated using variable stress/strain birefringence imposed on a ZnSe crystal; defining a Stokes vector associated with the incident infrared laser beam; scattering the incident infrared laser beam from an aggregate aerosol comprising interferents and analyte particles; producing a scattered-beam reactant Stokes vector by causing the scattered incident infrared laser beam to be polarization-modulated; generating a Mueller matrix by taking a transformation of the Stokes vector; and identifying the analyte using the Mueller matrix. The Mueller matrix may comprise M-elements that are functions of a wavelength of the infrared laser beam, backsattering orientation of the infrared laser beam, and a shape and size of the interferents and analyte particles.

摘要翻译： 产生斯托克斯矢量，米勒矩阵和来自气溶胶聚集体的极化散射的系统，装置和方法包括提供入射的红外激光束; 使入射红外激光束使用施加在ZnSe晶体上的可变应力/应变双折射进行偏振调制; 定义与入射的红外激光束相关联的斯托克斯矢量; 从包含干扰物和分析物颗粒的聚集气溶胶散射入射的红外激光束; 通过使散射入射的红外激光束进行偏振调制，产生散射光束反应物斯托克斯矢量; 通过采用斯托克斯向量的变换来生成米勒矩阵; 并使用Mueller矩阵识别分析物。 Mueller矩阵可以包括作为红外激光束的波长，红外激光束的后向散射取向以及干扰物和分析物颗粒的形状和大小的功能的M元件。