为评定激光指示器对运动目标的指示精度,通常使用激光光斑测量系统,测量照射在靶标上波长为1．064μm 的激光光斑位置。而现用激光光斑测量系统的最大探测距离仅为500 m,需要大幅提高。本文通过分析制约激光光斑测量距离的因素,研究了提高外场重频激光光斑测量距离的技术途径,在选用可精确控制快门曝光的近红外高量子效率摄像机的基础上,设计了快门最优控制策略。在保证激光光斑录取率99．9％的同时,通过控制摄像机曝光时间,将激光光斑图像信噪比提高了约2倍多。外场测量时,对重频激光光斑的测量距离达到了2000 m,满足了对运动目标测量的精度要求。
To evaluate laser pointer ’s localization accuracy of moving objects, a laser spot measurement system is typically used to measure the spot of a 1.064 μm-wave-length laser on the tar-get.However,the maximum measuring distance of existing laser spot measurement systems is only 500 m,which needs to be substantially increased.This essay analyzes the constraints of laser spot dis-tance measurement,studies the methods for increasing the measuring distance of repetitive-frequency laser spot in field,designs a shutter optimal control strategy based on the use of a high-quantum-effi-ciency near-infrared camera which is able to precisely control the shutter exposure.A 99.9% laser spot admission rate is guaranteed,meanwhile the laser spot image SNR is increased about 8 times by con-trolling the camera exposure time.In field,the measuring distance of frequency-repetitive laser spot reaches 2 000 m,which meets the precision requirements for moving target measurement.
参考文献
| [1] | 王狂飙.激光制导武器的现状、关键技术与发展[J].红外与激光工程,2007(05):651-655. |
| [2] | 沈浩;祁载康.激光光斑抖动对激光半主动制导精度的影响[J].北京理工大学学报,2008(2):108-110,172. |
| [3] | 李富栋.机载红外搜索与跟踪系统的现状与发展[J].激光与红外,2008(05):409-412. |
| [4] | 姚志军;韩秋蕾.激光制导动靶照射精度测量系统[J].液晶与显示,2014(6):1124-1130. |
| [5] | 李刚;汪岳峰;董伟;胡文刚;王炜.激光照射指示器整机性能检测方法研究[J].红外与激光工程,2004(5):462-464,492. |
| [6] | 岱钦;毛有明;吴凯旋;吴杰;李业秋.脉冲激光测距中高速精密时间间隔测量研究[J].液晶与显示,2015(1):83-87. |
| [7] | 孔兵;王昭;谭玉山.基于圆拟合的激光光斑中心检测算法[J].红外与激光工程,2002(3):275-279. |
| [8] | 胡林亭;卢显葵;金俊坤;韩福利.CCD测量激光光斑方法研究[J].激光技术,2001(2):154-157. |
| [9] | 张少迪;孙宏海.远距离激光光斑位置高精度测量方法[J].中国激光,2012(7):188-196. |
| [10] | 张海庄;姚梅;雷萍;李鹏;曾庆平.远场激光光斑图像处理方法研究[J].激光技术,2013(4):460-463. |
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