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http://dx.doi.org/10.6109/jkiice.2012.16.10.2101

A Study on Simulation of Doppler Spectra in a Current Velocity Radar  

Lee, Jonggil (인천대학교 정보통신공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.16, no.10, 2012 , pp. 2101-2107 More about this Journal
Abstract
A current velocity measurement radar for a river or a stream estimates Doppler frequencies of return echoes to extract the corresponding surface velocity information. It is very important to maintain the reliability and accuracy of these velocity estimates for water resource management such as flooding or drought conditions. However, received Doppler spectra of water surface return echoes have very widely varying shapes according to different measurement environments and weather conditions. Therefore, serious problems may arise in maintaining the reliability and accuracy of velocity estimating algorithm in a radar sensor because of Doppler spectra which can have many different kind of shapes. Therefore, in this paper, an appropriate Doppler spectrum model is suggested to simulate many various Doppler spectra. This model can be very useful in validating the reliability and accuracy of surface velocity estimates.
Keywords
Doppler spectrum; Current velocity measurement; Water surface return echoes; frequency estimates;
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