Vibration Isolation Design for Mobile Doppler Wind Lidar

Abstract

Abstract:

In order to avoid adverse vibration influence on mobile Doppler wind lidar when it is moving and ensure measurement's stability and accuracy, a vibration isolation system is designed for cabinets and optical table of mobile wind lidar. SB and M series wire rope isolators of IDC company are respectively selected as the isolators of cabinets and optical table. By calculating, the peak response frequency is less than disturbing frequency and shock displacement is less than the max deflection of the isolators. The relation graph between vibration isolation efficiency and disturbing frequency illustrates that the vibration isolation efficiency is more than 80%. Finally, comparing the locking frequency effect in the same vibration environment before and after vibration isolation system installed, it is obvious that the vibration isolation system improves the frequency stability. It is further certified the reliability of isolation by sine curve fitting of light of sight (LOS) velocity at the elevation of 1 km during moving measurements.

Key words: mobile Doppler wind lidar, cabinet; optical table, vibration isolation design, frequency locking; moving measurements

CLC Number:

TN958

CHEN Chao, SONG Xiao-Quan, JIA Jin-Bao. Vibration Isolation Design for Mobile Doppler Wind Lidar[J]. Journal of Atmospheric and Environmental Optics, 2012, (3): 227-234.

References

[1] Liu Z S, Liu B Y, Li Z G, et al. Wind measurements with incoherent Doppler lidar based on iodine filters at night and day [J]. Applied Physics B, 2007, 88(2): 327-335.
[2] Liu Z S, Wang Z J, Wu S H, et al. Fine-measuring technique and application for sea surface wind by mobile Doppler wind lidar [J].Optical Engineering, 2009, 48(6): 066002-066002-7.
[3] Ning Dayong, Gao Yunguo, Zhang Lei, et al. Active control and simulation for vibration isolation foundation of giant vehicular photo-electric tracker [J].Optics and Precision Engineering, 2010, 5(18): 1196-1203(in Chinese).
宁大勇，高云国，张磊, 等.大型车载光电跟踪设备隔振基础的主动控制 [J]. 光学精密工程，2010，5(18): 1196-1203.
[4] Dmitriev V S, Kostyuchenko T G, Yangulov V S, et al. Mobile lidars. Influence of external mechanical actions on accuracy of lidar aiming [J]. Bulletin of the Tomsk Polytechnic University, 2007, 311(2): 28-31.
[5] Menzies R T, Tratt D M. Airborne CO2 coherent lidar for measurements of atmospheric aerosol and cloud backscatter [J]. Applied Optics, 1994, 33(24): 5698-5711.
[6] Veprik A M, Babitsky V I, Pundak N, et al. Vibration protection of sensitive components of infrared equipment in harsh environments [J]. Shock and Vibration, 2001, 8(1): 55-69.
[7] Gan Zhihong. Design of inner frame vibration absorbing system for optoelectronic pod [J]. Optics and Precision Engineering, 2010, 9(18): 2036-2043(in Chinese).
甘至宏. 光电吊舱内框架减振系统设计 [J]. 光学精密工程, 2010, 9(18): 2036-2043.
[8] Liu Z S, Wu D, Liu J T, et al. Low-altitude atmospheric wind measurement from the combined Mie and Rayleigh backscattering by Doppler lidar with an iodine filter [J]. Applied Optics, 2002, 41(33): 7079-7086.
[9] Liu Z S, Wu S H, Liu B Y. Seed injection and frequency locked Nd:YAG laser for direct-detection wind lidar [J]. Optics and Laser Technology, 2007, 39(3): 541-545.
[10] Yin Qiwei, Liu Zhishen, Liu Bingyi, et al. Denoising processing of Doppler wind lidar date in moving measurement [J]. Journal of Atmospheric and Environmental Optics, 2011, 6(4): 260-267(in Chinese).
尹祺巍, 刘智深, 刘秉义, 等. 多普勒测风激光雷达运动测风数据降噪处理 [J]. 大气与环境光学学报, 2011, 6(4): 260-267.