Autocollimation Optical Doppler Velocimeter: Velocity Measurement of Hard-to-Access Objects

IF 1.1 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY Physics of Wave Phenomena Pub Date : 2024-10-27 DOI:10.3103/S1541308X24700353
A. L. Pavlov, Yu. N. Pyrkov, V. B. Tsvetkov
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Abstract

All-fiber autocollimation schemes of the laser Doppler velocimeter (LDV) are presented that enable measuring velocities of hard-to-access objects in the range from several cm/s to several km/s. The autocollimation scheme covered in this work allows distant (several tens and hundreds of meters away) objects with the only working channel less than 5 mm in diameter to be investigated using a narrow laser beam. An acousto-optic modulator is used to modify Mach–Zehnder interferometer scheme to extend the range of measured velocities and allow distinguishing the motion direction. Air guns with the 4.5-mm-diameter bore have been used for test measurements. Velocities ranging from 0.1 to 330 m/s have been successfully measured.

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自动对准光学多普勒测速仪:难以接近物体的速度测量
本文介绍了激光多普勒测速仪(LDV)的全光纤自动准直方案,该方案能够测量从几厘米/秒到几千米/秒范围内难以接近的物体的速度。这项工作中涉及的自动准直方案允许使用窄激光束对唯一工作通道直径小于 5 毫米的遥远(几十米到几百米远)物体进行研究。声光调制器用于修改马赫-泽恩德干涉仪方案,以扩大测量速度的范围并区分运动方向。测试测量使用了直径为 4.5 毫米的气枪。成功测量了 0.1 至 330 米/秒的速度。
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来源期刊
Physics of Wave Phenomena
Physics of Wave Phenomena PHYSICS, MULTIDISCIPLINARY-
CiteScore
2.50
自引率
21.40%
发文量
43
审稿时长
>12 weeks
期刊介绍: Physics of Wave Phenomena publishes original contributions in general and nonlinear wave theory, original experimental results in optics, acoustics and radiophysics. The fields of physics represented in this journal include nonlinear optics, acoustics, and radiophysics; nonlinear effects of any nature including nonlinear dynamics and chaos; phase transitions including light- and sound-induced; laser physics; optical and other spectroscopies; new instruments, methods, and measurements of wave and oscillatory processes; remote sensing of waves in natural media; wave interactions in biophysics, econophysics and other cross-disciplinary areas.
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