Effective methods for raising the measured distance of the pulse laser spots removed target in outfield

SONG Jian-zhong; HAN Guang-liang; GU Hai-jun

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Effective methods for raising the measured distance of the pulse laser spots removed target in outfield

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- Effective methods for raising the measured distance of the pulse laser spots removed target in outfield
- Optics and Precision Engineering Vol. 10, Issue 3, Pages: 300-303(2002)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 吉林大学, 通信学院,吉林长春,130022
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN247
- Received：01 November 2001，
  
  Revised：06 March 2002，
  
  Published Online：15 June 2002，
  
  Published：15 June 2002
- 稿件说明：
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宋建中, 韩广良, 顾海军. 提高外场脉冲激光光斑测量距离的有效方法[J]. 光学精密工程, 2002,(3): 300-303

SONG Jian-zhong, HAN Guang-liang, GU Hai-jun. Effective methods for raising the measured distance of the pulse laser spots removed target in outfield[J]. Editorial Office of Optics and Precision Engineering, 2002,(3): 300-303
宋建中, 韩广良, 顾海军. 提高外场脉冲激光光斑测量距离的有效方法[J]. 光学精密工程, 2002,(3): 300-303 DOI：

SONG Jian-zhong, HAN Guang-liang, GU Hai-jun. Effective methods for raising the measured distance of the pulse laser spots removed target in outfield[J]. Editorial Office of Optics and Precision Engineering, 2002,(3): 300-303 DOI：

摘要

介绍了提高外场脉冲激光光斑测量距离的两个关键技术:CCD电子快门预测和背景相减技术

并给出了提高白天外场脉冲激光光斑的测量距离的试验效果

在激光制导武器系统和激光告警系统的研制中都有重要的意义.影响白天外场对脉冲激光光斑的测量距离的主要原因是激光光斑被淹没在阳光照射的背景里

不能提取光斑图像.设法让电子快门的触发脉冲在每个激光脉冲到来前的固定时间间隔产生

保证CCD捕捉到光斑的全部能量

从而可以使CCD输出最亮的光斑图像.另一方面

在激光没有照射时

采集一帧图像作为背景

让激光照到靶板后的图像与背景图像相减

结果只在光斑照到的位置处有不同.在相减后的图像中

使激光光斑突出.试验证明采用本文介绍的技术明显地提高了外场脉冲激光光斑测量距离.

Abstract

A pre-estimation to open a CCD electronic shutter and image subtraction between the background image composed of a laser spot and the background are introduced in this paper. These techniques are effective to increase the tested distance of the pulse laser spots removed target in outfield during daytime. Manipulating the trigger pulses of a CCD electronic shutter

the shutter will be pre-opened. Therefore

the full energy of the laser spot lasting only several nano-seconds can be caught. Using the technique of the image subtraction

the bright background where a weak laser spot was merged

was eliminated and the image of the laser spot was emerged. The test results are also presented in this paper.

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references

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Tekalp M A. Digital video processing[M]. Prentice Hall PTR,1995.

Jean-Claucle.一种抗干扰的跟踪光斑视频图像处理方法[D].北京:机电部第二零三研究所,1988.

杨海波.一种自然场景中的目标分割方法[J].中国图像学报,1998,3(8):646-650.

张尧禹.一种高精度非接触位置测量系统[J].光学精密工程,2002,10(1):41-44.

王欣刚.红外观察仪图像畸变的校正[J].光学精密工程,2001,9(1):39-42.

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