航海雷达测波系统中降雨观测资料的分析与处理

在利用航海雷达进行海浪观测时，降雨的出现会改变海面粗糙度，从而导致雷达所接收到的回波信号强度发生改变。通过对实际海浪观测资料的分析，提出一种对航海雷达测波系统中降雨观测资料的分析与处理方法，运用雷达回波影像的统计特性-均值和变异系数作为降雨与非降雨雷达影像的分类标准，然后利用中值滤波算法对降雨观测资料进行滤波处理，以降低降雨对回波影像的影响，同时探讨了中值滤波算法的适用性。实验结果表明本算法具有较强的鲁棒性和较高的通用性。

Analysing and Processing of Rainfall Observation Data in Wave Monitoring System by Nautical Radar

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.