基于二维交叠掩膜编码的全方向激光方向探测应用研究  

Research on Two-Dimensional Overlapping Coding for Detection of Laser Direction

作　　者：郎文杰[1] 

机构地区：[1]中北大学信息与通信工程学院,山西太原030051

出　　处：《光学学报》2010年第5期1374-1378,共5页Acta Optica Sinica

基　　金：山西省青年科技研究基金(2007021019)资助课题

摘　　要：为了实现在大视场范围内任意激光方向的探测,同时保证结构稳定、响应快和成本低等优点,设计了基于二维交叠掩膜编码方法的激光方向探测方法。整个激光方向探测系统采用6个平窗型探测器,设计了使水平面上二维分开的掩膜方式,利用掩膜与探测的角度、距离关系可以计算二维交叠的探测区域,从而实现激光方向的探测。实验表明,由6个探测器组成的二维交叠探测区域可以将整个上半平面分为最小识别角度为30°的36个区域。经探测器倾斜照射实验可知,在入射激光最倾斜的条件下探测器响应电压为40 mV,大于噪声产生电压1倍以上,可以有效探测并识别激光方向,探测视场为18°-162°之间旋转的空域。In order to realize on any direction of laser detection in a big field of view,and guarantee the stable structure,sensitive response,the low cost and so on,two-dimensional overlapping mask encoding method is proposed.The laser direction detection system uses six flat-window detectors,and it is constituted with two-dimensional separated mask in the horizontal plane.Using the mask and the detection angle,the field of view of the two-dimensional overlapping encoding can be calculated,and thus to realize the laser direction.According to the experiment,the laser direction can be calculated by the coding method with six detectors,and the accuracy of angle can reach 30°.The experiment of laser with incline incidence to the detectors shows that,under the most tilted angle of laser the response voltage of the detector is more than 40 mV,which is greater than the voltage arising from noise.Therefore,the field of view of the system is in the rotating area from 18° to 162°.

关 键 词：探测器 激光告警 二维交叠探测方法 掩膜编码 激光方向探测 

分 类 号：TN919.81[电子电信—通信与信息系统]