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    Using a fixed-frequency oscillation in a dispersive spectrometer to measure scene inhomogeneity
    1.
    发明授权
    Using a fixed-frequency oscillation in a dispersive spectrometer to measure scene inhomogeneity 有权
    在分散光谱仪中使用固定频率振荡来测量场景不均匀性

    公开(公告)号：US07355705B1

    公开(公告)日：2008-04-08

    申请号：US11159883

    申请日：2005-06-23

    申请人： Douglas Lent Cohen ,  David James Crain ,  Richard James Hertel

    发明人： Douglas Lent Cohen ,  David James Crain ,  Richard James Hertel

    IPC分类号： G01J3/28

    CPC分类号： G01J3/04 ,  G01J3/02 ,  G01J3/0229 ,  G01J3/0289 ,  G01J3/2803 ,  G01J3/2823

    摘要： A method for measuring scene inhomogeneity includes the steps of directing radiance of a scene into a dispersive spectrometer, and changing the field-of-view (FOV) of the spectrometer, while directing the radiance of the scene into the spectrometer. The method then processes the radiance of the scene to obtain a signal. The method also includes measuring an amplitude of the signal and determining scene inhomogeneity based on the measured amplitude of the signal. The method may include uniformly oscillating the FOV of the spectrometer and, next, obtaining a sinusoidal signal, based on uniformly oscillating the FOV of the spectrometer.

    摘要翻译： 用于测量场景不均匀性的方法包括将场景的辐射指向分散光谱仪的步骤，以及改变光谱仪的视场（FOV），同时将场景的辐射指向光谱仪。 该方法然后处理场景的辐射度以获得信号。 该方法还包括基于信号的测量幅度来测量信号的幅度和确定场景不均匀性。 该方法可以包括均匀振荡光谱仪的FOV，并且接下来，基于均匀振荡光谱仪的FOV获得正弦信号。

    Using a fixed-frequency oscillation to detect and measure scene inhomogeneity
    2.
    发明授权
    Using a fixed-frequency oscillation to detect and measure scene inhomogeneity 有权
    使用固定频率振荡来检测和测量场景不均匀性

    公开(公告)号：US07791719B1

    公开(公告)日：2010-09-07

    申请号：US12013523

    申请日：2008-01-14

    申请人： Douglas Lent Cohen ,  David James Crain ,  Richard James Hertel

    发明人： Douglas Lent Cohen ,  David James Crain ,  Richard James Hertel

    IPC分类号： G01J1/56 ,  G01P3/40

    CPC分类号： G01J1/08 ,  G01J1/02 ,  G01J1/0266 ,  G01J1/04 ,  G01J1/0403 ,  G01J5/007 ,  G01J5/04 ,  G01J5/047 ,  G01J5/08 ,  G01J5/089 ,  G01J2005/0048

    摘要： An optical system measures scene inhomogeneity. The system includes a mirror for receiving radiance of a field-of-view (FOV) of a scene, and reflecting a portion of the radiance to an optical detector. A controller is coupled to the mirror for changing the FOV. The optical detector provides a signal of the reflected portion of radiance of the scene. A processor determines scene inhomogeneity, based on amplitude of the signal provided from the optical detector. The controller is configured to modulate the FOV at a periodic interval, using a sinusoidal waveform, a pulse code modulated waveform, or a pseudo-random waveform.

    摘要翻译： 光学系统测量场景不均匀性。 该系统包括用于接收场景的视场（FOV）的辐射的反射镜，并将辐射的一部分反射到光学检测器。 控制器耦合到镜子以改变FOV。 光学检测器提供场景的反射部分的信号。 处理器基于从光学检测器提供的信号的幅度来确定场景不均匀性。 控制器被配置为使用正弦波形，脉冲编码调制波形或伪随机波形以周期性间隔调制FOV。