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http://dx.doi.org/10.6109/JKIICE.2009.13.9.1753

A Study on the Estimation of Wind Velocity in Asymmetric Doppler Spectra of Weather Signals  

Lee, Jong-Gil (인천대학교 정보통신공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.13, no.9, 2009 , pp. 1753-1759 More about this Journal
Abstract
A weather radar as one of the remote sensing devices to analyze the weather phenomena receives the return echoes which consist of scattered electromagnetic wave signals from rain, cloud and dust particles, etc. These received Doppler weather spectra are analyzed to extract the various characteristic weather information. The mean wind velocity is one of the important weather parameters which can be obtained by a weather radar ed it may be useful in the prevention of weather hazards occurred by the abrupt shift of wind in small geographical scales such as microbursts. It is usually estimated by pulse pair method which is considered to be reliable and very efficient in the computational requirement. However, there are some problems in the accurate estimation of the mean velocity if Doppler spectra of weather signals appear to be asymmetric gaussian or multi-peak spectra. Therefore, in this paper, the problems in the mean estimation of asymmetric Doppler spectra are analyzed and the improved method is suggested.
Keywords
비대칭 도플러 스펙트럼;기상 레이다;펄스페어;풍속 추정;
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