摘要
介绍了一种新颖的激光光幕靶弹丸速度测量系统.系统由半导体激光光源准直、扩束形成原向反射屏反射后形成一定直径的反射光斑,光斑经用以扩大接收面积的光纤光锥会聚后由光电探测器接收.给出了苏格兰片反射率测试的方法和测试结果以及3 mm飞行物体的过靶波形.试验结果表明,采用原向反射屏和光纤光锥构成的光电探测系统具有较高的信噪比和灵敏度.
A projectile-velocity measurement system using novel laser diode screen is introduced. After collimated and spread, the light of LD is projected to the Scotchlite retroreflector, and then reflected to form a spot with certain diameter. An fiber optic taper is used to transform the spot with larger diameter into smaller one, which is then received by a photodiode. In addition, the reflectivity measurement method and result of Scotchlite retroreflector is presented in the paper. Finally, the waveform of 3 mm flying object has been presented. The experiment result indicates that the photoelectric detecting system with Scotchlite retro-reflector and fiber optic taper has high S/N ration and sensitivity.
出处
《中北大学学报（自然科学版）》
EI
CAS
2006年第4期352-356,共5页
Journal of North University of China(Natural Science Edition)
关键词
大面积靶区
弹丸
苏格兰反射屏
光纤锥
large area screen
projectile
Scotchlite retro-reflector
fiber optic taper
