| VAD技术反演平均风向风速的研究 |
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| 引用本文： | 杜晓勇,张鹏,胡明宝.VAD技术反演平均风向风速的研究[J].解放军理工大学学报,2002,3(3):81-84. |
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| 作者姓名： | 杜晓勇 张鹏 胡明宝 |
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| 作者单位： | 解放军理工大学气象学院 江苏南京211101
(杜晓勇，张鹏)，解放军理工大学气象学院 江苏南京211101(胡明宝) |
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| 摘 要： | 采用实测的单普勒雷达速度资料，通过对比分析了，重点讨论了非均匀分布VAD计算方法和均匀分布VAD计算方法的异同，以了解非均匀分布VAD计算方法业务应用的可能性。结果表明，在多普勒速度场缺测值较少情况下，两者计算结果接近；在多普勒速度场缺测值较多时，两者计算的平均风向和风速有较大的差别，均匀分布VAD计算的风速偏小，而非均匀分布VAD计算结果比较合理。
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| 关 键 词： | 多普勒速度 同场反演 VDA技术 |
| 文章编号： | 1009-3443(2002)03-0081-04 |
| 修稿时间： | 2001年9月17日 |
Determination of Wind Fields Using VAD Technique |
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| DU Xiao yong,ZHANG Peng and HU Ming bao.Determination of Wind Fields Using VAD Technique[J].Journal of PLA University of Science and Technology(Natural Science Edition),2002,3(3):81-84. |
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| Authors: | DU Xiao yong ZHANG Peng and HU Ming bao |
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| Institution: | Institute of Meteorology, PLA Univ. of Sci. & Tech., Nanjing 211101, China;Institute of Meteorology, PLA Univ. of Sci. & Tech., Nanjing 211101, China;Institute of Meteorology, PLA Univ. of Sci. & Tech., Nanjing 211101, China |
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| Abstract: | In this paper, by using real time single Doppler radar data, the similarities and differences between evenly spaced VAD technique and unevenly spaced VAD technique are discussed to find out the feasibility of operational use of unevenly spaced VAD technique. It is showed that when the sampling dispersion is adequate the results of these two methods are very similiar, but when the sampling dispersion is inadequate the calculated wind velocity and wind direction are quite different, with the wind velocity calculated by evenly spaced VAD technique being rather small, while those by unevenly spaced VAD technique more reasonable. |
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| Keywords: | Doppler velocity wind retrivals velocity azimuth display |
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