| 多普勒测速技术的新进展 |
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| 引用本文： | 刘童麟,王蕴珊,王祖增,赵修业.多普勒测速技术的新进展[J].济南大学学报(社会科学版),1995(1). |
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| 作者姓名： | 刘童麟 王蕴珊 王祖增 赵修业 |
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| 作者单位： | 山东工业大学(刘童麟，王蕴珊)，济南大学(王祖增，赵修业) |
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| 摘 要： | 七十年代以来,随着对固体材料冲击波的研究,激光多普勒测速技术有了新进展:广量程和高解析度.最早用于冲击波研究的是位移干涉仪,其局限性是被测速度不能超过200m/sec.为了扩大量程,继而研制出速度干涉仪,从方法上解决了高速度的测量.但速度干涉仪对测速物体表面有磨光的要求,这也限制了它的实际应用.解决的方法是引入广角迈克尔逊干涉仪,以利用物体自然表面的漫射光,这就是对任何反射物的速度干涉仪系统,即VISAR.VISAR是目前激光多普勒测速仪器中最具代表性的一种,本文作了重点介绍.
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| 关 键 词： | 激光多普勒 干涉术 漫射 |
RECENT ADVANCES OF LASER DOPPLER TECHNIQUE FOR MEASURING VELOCITY |
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| Liu Tonglin,Wang Yunshan.RECENT ADVANCES OF LASER DOPPLER TECHNIQUE FOR MEASURING VELOCITY[J].Journal of Jinan University,1995(1). |
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| Authors: | Liu Tonglin Wang Yunshan |
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| Institution: | Liu Tonglin Wang Yunshan(Shandong University of Technology)Wang Zuzeng Zhao Xiuye(Jinan University) |
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| Abstract: | Since the seventies,laser Doppler technique for measuring velocity has a new development: wide range and high resolution as researching shock wave of solid materials. The displacement interferometer was first used as researching shock wave. But the mea-surd velocity has a practical upper limit of about 200m/sec. To widen range of the interferometer velocity interferometer was later developed and the method of high velocity measurement was found out. However, velocity interferometer has a requirement of polished surface for measurd velocity body. This limits its practical application. Solved method is to introduce Wide-Angle Michelson Interferometer so as to utilize the diffuse light reflected from natural surface of a body: This is Velocity Interferometer System for any reflector,that is VISAR. VISAR is the best typical kind of laser Doppler velocity interferometer at present and is focal point in this paper. |
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| Keywords: | laser Doppler interferometry dif fuseness |
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