| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Analysis of Detectors and Transmission Curve Correction of Mobile Rayleigh Doppler Wind Lidar |
| TANG Lei1**, WANG Yong-Tao4, SHU Zhi-Feng1, DONG Ji-Hui1, WANG Guo-Cheng1, XU Wen-Jing1, HU Dong-Dong1, CHEN Ting-Di2, DOU Xian-Kang2, SUN Dong-Song2, CHA Hyunki3 |
1Key Laboratory of Atmospheric Composition and Optical Radiation, Chinese Academy of Sciences, Hefei 230031
2School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026
3Korea Atomic Energy Research Institute, Daejeon, 305-353, Korea
4Computer Department, Anhui Finance and Trade Vocational College, Hefei 230031
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| Cite this article: |
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TANG Lei, WANG Yong-Tao, SHU Zhi-Feng et al 2010 Chin. Phys. Lett. 27 114207 |
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Abstract A mobile molecular Doppler wind lidar (DWL) based on double-edge technique is presented for wind measurement at altitudes from 10 km to 40 km. A triple Fabry-Perot etalon is employed as a frequency discriminator to determine the Doppler shift proportional to the wind velocity. The lidar operates at 355 nm with a 45-cm aperture telescope and a matching azimuth-over-elevation scanner that can provide full hemispherical pointing. In order to guarantee the wind accuracy, different forms of calibration function of detectors in different count rates response range would be especially valuable. The accuracy of wind velocity iteration is improved greatly because of application of the calibration function of linearity at the ultra low light intensity especially at altitudes from 10 km to 40 km. The calibration functions of nonlinearity make the transmission of edge channel 1 and edge channel 2 increase 38.9% and 27.7% at about 1 M count rates, respectively. The dynamic range of wind field measurement may also be extended because of consideration of the response function of detectors in their all possible operating range.
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42.68.wt.
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Received: 10 June 2010
Published: 22 October 2010
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