Low tropospheric wind measurement with Mie Doppler Lidar

Shen, Fahua; Cha, Hyunki; Sun, Dongsong; Kim, Dukhyeon; Kwon, Sung Ok

doi:10.1007/s10043-008-0032-x

Cited by 21 publications

(13 citation statements)

References 7 publications

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“…The frequency of outgoing laser is locked at the crossing point of two opposite transmission curves of this double-channel FPI. The differential measurement of the transmittances for outgoing laser and atmospheric backscatter signal can be used to retrieve the Doppler shift, which can be used to determine the wind speed in the line of sight (LOS) of the outgoing laser [1,2].…”

Section: Background Of the Double-edge Mie Dwlmentioning

confidence: 99%

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Fitting operate mode for incoherent Mie Doppler wind lidar

Cheng

et al. 2013

2013 International Conference on Optoelectronics and Microelectronics (ICOM)

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For direct detection Mie Doppler wind lidar, the method of use Fabry-Perot interferometer as a dynamic Doppler shift discriminator is proposed and investigated theoretically. For the highest measuring sensitivity part of the FPI transmission curves is utilized to measure any possible laser Doppler shift, its measuring accuracy is very high. With no loss of this significant superiority, any actual wind speed range requirement can be met by repeating this way in a measurement. The simulations for different atmosphere conditions prove that this method is more suitable for wind measurement of higher part troposphere than previous.

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Section: Background Of the Double-edge Mie Dwlmentioning

confidence: 99%

“…The Doppler wind lidar (DWL) has demonstrated its capability for these parameters measurement [1][2][3]. Two kinds of detection mechanisms have been investigated and applied for it, the coherent (or heterodyne) detect [4,5] and incoherent (direct) detect [6].…”

Section: Introductionmentioning

confidence: 99%

Fitting operate mode for incoherent Mie Doppler wind lidar

Cheng

et al. 2013

2013 International Conference on Optoelectronics and Microelectronics (ICOM)

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“…This would benefit from high-resolution reference data, ideally from other measurement systems like Doppler lidar (Grund et al 2001;Shen et al 2008;Pearson et al 2009). This would benefit from high-resolution reference data, ideally from other measurement systems like Doppler lidar (Grund et al 2001;Shen et al 2008;Pearson et al 2009).…”

Section: Conclusion and Further Workmentioning

confidence: 99%

Optimal Gabor-Frame-Expansion-Based Intermittent-Clutter-Filtering Method for Radar Wind Profiler

Lehmann

2012

Journal of Atmospheric and Oceanic Technology

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Intermittent clutter signals are frequently observed by radar wind profilers during the seasonal bird migration. A novel statistical filtering algorithm based on a simultaneous time-frequency analysis of the profiler's raw data was recently proposed to address shortcomings of existing methods. The foundation of this method is a Gabor frame expansion of the complex time series of the demodulated receiver voltage. In this paper, two objective criteria are suggested to obtain an optimal setup for the discrete Gabor frame expansion from the multitude of possibilities: first, the choice of almost-tight frames for a predefined maximum redundancy and second, the requirement that the analyzing bandwidth of the used Gaussian window function should provide a simultaneously sparse representation of both atmospheric signal components and intermittent clutter. The question of optimal sampling settings, especially dwell time, for a maximum reduction of bird interference is also discussed. Using data obtained during intense bird migration events it is shown that a combination of filtering and quality control of the result is required to prevent the occurrence of significant systematic and correlated errors in the final wind measurement.

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“…A Mie Doppler wind LIDAR was already successfully developed at Anhui Institute of Optics and Fine Mechanics, CAS, in 2006. This aerosol-based wind LIDAR can be used only for wind measurement in the low troposphere where the aerosol density is thick and Mie backscatter is strong [5][6][7]. For the high altitude where the aerosol concentration is extremely thin [8], this kind of wind LIDAR is not valid.…”

Section: Introductionmentioning

confidence: 99%

Low Stratospheric Wind Measurement Using Mobile Rayleigh Doppler Wind LIDAR

Shu¹,

Dou²,

Xia³

et al. 2012

Journal of the Optical Society of Korea

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A mobile Rayleigh Doppler wind LIDAR at an eye-safe wavelength of 355 nm incorporating double-edge technique with triple-channel Fabry-Perot etalon is developed for wind measurement from 5 to 40km. The structure of this LIDAR system is described. An intercomparsion experiment with rawinsonde is made, showing good agreement with expected measurement accuracy. A continuous observation of stratosphere wind field for several days with temporal resolution of 15 min and spatial resolution of 200 m from 5 to 40 km is presented, demonstrating the stability and robustness of the LIDAR. A stratospheric quasi-zero wind layer can be found at around 20 km with a direction change from east to west evident in the continuous observation.

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Low tropospheric wind measurement with Mie Doppler Lidar

Cited by 21 publications

References 7 publications

Fitting operate mode for incoherent Mie Doppler wind lidar

Fitting operate mode for incoherent Mie Doppler wind lidar

Optimal Gabor-Frame-Expansion-Based Intermittent-Clutter-Filtering Method for Radar Wind Profiler

Low Stratospheric Wind Measurement Using Mobile Rayleigh Doppler Wind LIDAR

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