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 Two key technologies to improve the measuring distance of pulsed laser spot in the outfield are introduced: CCD electronic shutter prediction and background subtraction technology, and the experimental results of improving the measurement distance of pulsed laser spot in the field during the daytime are given. In the laser guided weapon system and laser warning System development has important significance. The main reason that affects the measurement range of the pulse laser spot in the field during the daytime is that the laser spot is submerged in the background of the sunlight and the spot image can not be extracted. Try to make the electronic shutter trigger pulse in each laser pulse before the arrival of a fixed time interval to ensure that the CCD capture the full energy spot, which can make CCD output the brightest spot image. On the other hand, when the laser is not irradiated, an image is taken as the background, and the image after the laser is irradiated on the target is subtracted from the background image, and the result is only different at the spot to which the light is irradiated. In the subtracted image, the laser spot is highlighted. Experiments show that using the techniques described in this article significantly increased the field pulse laser spot measuring distance