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    Photopolarimetric lidar dual-beam switching device and mueller matrix standoff detection system and method
    3.
    发明授权
    Photopolarimetric lidar dual-beam switching device and mueller matrix standoff detection system and method 有权
    光偏置激光雷达双光束切换装置和mueller矩阵对接检测系统及方法

    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。

    Infrared Mueller matrix acquisition and preprocessing system and method
    4.
    发明授权
    Infrared Mueller matrix acquisition and preprocessing system and method 失效
    红外线Mueller矩阵采集和预处理系统及方法

    公开(公告)号：US07737399B1

    公开(公告)日：2010-06-15

    申请号：US12256936

    申请日：2008-10-23

    申请人： Arthur H. Carrieri ,  David J. Owens ,  Jonathan C. Schultz

    发明人： Arthur H. Carrieri ,  David J. Owens ,  Jonathan C. Schultz

    IPC分类号： G01J5/00

    CPC分类号： G01N21/21 ,  G01J4/04 ,  G01N21/35

    摘要： An analog Mueller matrix data acquisition system (AMMS) acquiring middle-infrared Mueller (M) matrices of backscattering surfaces. The M-elements are measured by means of an active photopolarimetric sensor. The AMMS records nine M-elements simultaneously in groups of four modulo 2 incident continuous-wave CO2 laser beams—one incident beam is tuned to a fundamental molecular absorption cross-section by the aerosol of detection interest (analytic wavelength λa) while the other beam is detuned off that resonance band (reference wavelength λr) and in the closest vicinity to λa. Accordingly, those ΔM elements exhibiting susceptible behavior to the aerosol analyte, driven on-then-off its molecular vibrational resonance band, cues an identification event thus providing detection decision information. The AMMS is comprised of PEM reference frequency synthesizer, optical power regulation, data digitizer, and computer interface components in an interfaced and integrated framework that governs all operations of M-elements production by the photopolarimetric sensor.

    摘要翻译： 模拟Mueller矩阵数据采集系统（AMMS）采集后向散射表面的中红外Mueller（M）矩阵。 M元件通过有源光偏振传感器测量。 AMMS以四个模2入射连续波CO2激光束同时记录九个M元件 - 一个入射光束通过检测感兴趣的气溶胶（分析波长λa）调谐到基本分子吸收截面，而另一束 使该谐振频带（参考波长λr）失真并与λa最接近。 因此，对气溶胶分析物表现出敏感行为的那些＆Dgr。M元素，驱动其分子振动共振频带，从而提供识别事件，从而提供检测决策信息。 AMMS由界面和集成框架中的PEM参考频率合成器，光功率调节，数​​据数字转换器和计算机接口组件组成，其控制由光偏振传感器产生的M元件的所有操作。