摘要
在对比分析国际上现有模型中风速对海杂波幅度均值的影响基础上,提出了一种新的两分量高斯模型建立海杂波幅度均值与风速的关系.结合我国黄海L波段VV极化小擦地角海杂波实测数据,对该模型进行了验证与精度分析,并研究了该模型参数随擦地角的变化关系,给出了模型拟合参数.从数据分析的结果来看,该模型较好地捕获了海杂波幅度随风速的变化趋势,可为雷达系统设计和雷达海杂波预测提供技术支撑.
A new tow-component Gaussian model is presented on the basis of the comparative analysis of the impact of wind speed on sea clutter average reflectivity described by existing international models.Based on the measured sea clutter data of VV polarization at low grazing angles collected by a L-band radar at the yellow sea of china,the model was validated with precision analysis.The relationship between the model parameters and grazing angle is analyzed and the fitting parameters of the model is given.According to the results of data analysis,the proposed model can well capture the trend of the sea clutter amplitude with wind speed.This model is important for design of radar systems and radar sea clutter prediction.
出处
《电波科学学报》
EI
CSCD
北大核心
2015年第2期289-294,共6页
Chinese Journal of Radio Science
关键词
雷达
海杂波
小擦地角
幅度均值
radar
sea clutter
low grazing angle
average reflectivity
