陆斌, 吕俊伟. 激光器阵列测量小视场成像烟幕干扰效能[J]. 红外与激光工程, 2013, 42(5): 1161-1165.
引用本文: 陆斌, 吕俊伟. 激光器阵列测量小视场成像烟幕干扰效能[J]. 红外与激光工程, 2013, 42(5): 1161-1165.
Lu Bin, Lv Junwei. Measurement for smoke efficiency to small scene imaging with laser implements array[J]. Infrared and Laser Engineering, 2013, 42(5): 1161-1165.
Citation: Lu Bin, Lv Junwei. Measurement for smoke efficiency to small scene imaging with laser implements array[J]. Infrared and Laser Engineering, 2013, 42(5): 1161-1165.

激光器阵列测量小视场成像烟幕干扰效能

Measurement for smoke efficiency to small scene imaging with laser implements array

  • 摘要: 为了解决在精确测量面源烟幕对小视场成像的干扰效能时,单束激光视场小、使用扫描方式时无法解决与烟幕扩散同步的问题,设计提出采用多个低功率的相同激光器,经过光束均匀化扩束整形排列形成激光器阵列,实现对烟幕透过率的空间探测,利用成像传感器测量烟幕的空间透过率的相对变化率。利用这种方法使用33均匀扩束激光光束阵列可以在113.4 m距离上实现面积为2.8 m2.8 m的面源烟幕测量,成像CCD视场为1010,灰度值小于230时的相对变化率误差不大于0.5%。

     

    Abstract: The laser beam is the most precise and popular instrument to measure the smoke permeate rate. But in most field testing cases, the scene of laser beam light is too small for the smoke field testing and the synchronization problem is also unavoidable when it works at scanning way. In order to insure the measurement precision for the disturbance effect of smoke to the small scene imaging, it introduces the design of lasers array with multi small power same semiconductor laser after beam homogeneous enlarge shaping. The relative variety rate of room permeating rate can be measured by the imaging sensor. It can measure 2.8 m2.8 m smoke at 113.4 m distance with 33 beam homogenous enlarge shaping laser array during the principle test. The scene of CCD is 1010and the error of relative variety rate is less than 0.5% when grey level is no more than 230.

     

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