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    • 7. 发明授权
    • Laser spot tracking with off-axis angle detection
    • 带离轴角度检测的激光跟踪
    • US08451432B2
    • 2013-05-28
    • US12835719
    • 2010-07-13
    • Ian D. CrawfordNoal ChandlerJohn HarwickDwight WildonCharles G. Smith
    • Ian D. CrawfordNoal ChandlerJohn HarwickDwight WildonCharles G. Smith
    • G01C3/08
    • G01S17/66F41G7/226F41G7/2293G01C3/08G01S3/781G01S3/784
    • A laser spot tracker comprising a quadrant detector. A portion of a spot of laser light reflected from an object being illuminated (OBI) may be defocused to occupy a significant portion such as one-third of the field of view, while another portion remains focused, therefore allowing for quick calculation of the spot centroid. With such a “composite spot”, multiple target (OBI) positions may simultaneously be defined in elevation and azimuth with respect to null by analyzing the energy in each quadrant. The X and Y angle information (off null) for multiple targets (OBIs), and their codes may be displayed. For a large, defocused spot, two segmented multi-element detectors may be used, one in front of and the other behind the focal plane to reduce the effects of hot spots in a spot of laser light collected from an object being illuminated.
    • 包括象限检测器的激光点跟踪器。 从被照明物体(OBI)反射的激光光斑的一部分可以散焦以占据诸如视场三分之一的重要部分,而另一部分保持聚焦,因此允许快速计算斑点 重心。 通过这样的“复合点”,通过分析每个象限中的能量,可以同时在高程和方位上定义多个目标(OBI)位置相对于零。 可以显示多个目标(OBI)的X和Y角度信息(关闭空值)及其代码。 对于大的散焦点,可以使用两个分段多元件检测器,一个在焦平面之前,另一个在焦平面之后,以减少从被照射物体收集的激光光斑中的热点的影响。