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Remote Sensing Technology and Application  2008, Vol. 23 Issue (2): 125-129    DOI: 10.11873/j.issn.1004-0323.2008.2.125
article     
Analysing and Processing of Rainfall Observation Datain Wave Monitoring System by Nautical Radar
HAO Yan-ling,TANG Yan-hong,LU Zhi-zhong
(College of Automation,Harbin Engineering University,Harbin 150001,China)
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Abstract  

In process of observing ocean wave with nautical radar,the roughness of offing will be changed for emergence of rainfall.So the intensity of echo signal which received from radar will be influenced.In this paper an analyzing and processing method is proposed for rainfall observation data in wave monitoring system by nautical radar.Firstly the statistic characteristic- mean value and variation coefficient of radar echo image are used as classifying criterion to distinguish rainfall and non-rainfall.Then the median filtering algorithm is approached to dealing with rainfall observation data in order to reduce the influence from rainfall.The experimental results indicate that the algorithm proposed in this paper has a good robustness and general performance.

Key words:  Nautical radar      Rainfall      Variation coefficient      Median filtering     
Received:  18 December 2007      Published:  24 October 2011
TP 731.22  
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Cite this article: 

HAO Yan-ling,TANG Yan-hong,LU Zhi-zhong . Analysing and Processing of Rainfall Observation Datain Wave Monitoring System by Nautical Radar. Remote Sensing Technology and Application, 2008, 23(2): 125-129.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2008.2.125     OR     http://www.rsta.ac.cn/EN/Y2008/V23/I2/125

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