中国物理B ›› 2013, Vol. 22 ›› Issue (2): 24211-024211.doi: 10.1088/1674-1056/22/2/024211

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Theoretical description of improving measurement accuracy for incoherence Mie Doppler wind lidar

杜军, 任德明, 赵卫疆, 曲彦臣, 陈振雷, 耿利杰   

  1. National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China
  • 收稿日期:2012-06-05 修回日期:2012-06-29 出版日期:2013-01-01 发布日期:2013-01-01
  • 基金资助:
    Project supported by the International Cooperative Project between China and Russia, Research on the Ocean/Atmosphere Lidar (Grant No. 2008DFR10170).

Theoretical description of improving measurement accuracy for incoherence Mie Doppler wind lidar

Du Jun (杜军), Ren De-Ming (任德明), Zhao Wei-Jiang (赵卫疆), Qu Yan-Chen (曲彦臣), Chen Zhen-Lei (陈振雷), Geng Li-Jie (耿利杰 )   

  1. National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China
  • Received:2012-06-05 Revised:2012-06-29 Online:2013-01-01 Published:2013-01-01
  • Contact: Ren De-Ming E-mail:deming@hit.edu.cn
  • Supported by:
    Project supported by the International Cooperative Project between China and Russia, Research on the Ocean/Atmosphere Lidar (Grant No. 2008DFR10170).

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摘要： For the nonlinearity of Fabry-Perot interferometer (FPI) transmission spectrum, the measurement uncertainty of incoherent Mie Doppler wind lidar based on it increases evidently with the increase of backscattering signal Doppler shift. A method of repeating the use of the approximate linear part of FPI transmission spectra for reducing the high uncertainty of big Doppler shift is proposed. One of the ways of realizing this method is discussed in detail, in which the characteristics of FPI transmission spectrum changing with thickness and incident angle are utilized simultaneously. Under different atmosphere conditions, it has been proved theoretically that the range of measurement uncertainty drops to one-sixth while its minimum has no seriously change. This method can be used not only to guide the new system design, but also as a new working way for the fabricated system.

关键词: incoherent Doppler wind lidar, measurement accuracy

Abstract: For the nonlinearity of Fabry-Perot interferometer (FPI) transmission spectrum, the measurement uncertainty of incoherent Mie Doppler wind lidar based on it increases evidently with the increase of backscattering signal Doppler shift. A method of repeating the use of the approximate linear part of FPI transmission spectra for reducing the high uncertainty of big Doppler shift is proposed. One of the ways of realizing this method is discussed in detail, in which the characteristics of FPI transmission spectrum changing with thickness and incident angle are utilized simultaneously. Under different atmosphere conditions, it has been proved theoretically that the range of measurement uncertainty drops to one-sixth while its minimum has no seriously change. This method can be used not only to guide the new system design, but also as a new working way for the fabricated system.

Key words: incoherent Doppler wind lidar, measurement accuracy

中图分类号:  (Remote sensing; LIDAR and adaptive systems)

  • 42.68.Wt
42.79.Qx (Range finders, remote sensing devices; laser Doppler velocimeters, SAR, And LIDAR)