摘要
高频(HF)雷达海洋探测是典型的粗糙面对电波的散射问题。从已有理论分析了宽波束高频地波雷达海洋回波的特点,再利用实验数据研究了回波谱的归一化标准差和杂波信号相关时间的变化规律及特性,建立了各谱区合适的统计模型并分析了某些模型参数随距离的变化规律,为优化海洋学实验设计、改进海态反演方法和低速移动目标检测提供了有力的依据。
Detection of ocean surface dynamics with HF radar is a typical problem of wave scattering from a rough surface, the characteristics of HF broad-beam seaecho received by groudwave radar is analyzed theoretically, and the spectral standard deviation and autocorrelation of echo signa with experimental datas is studied, the model of power spectrum for each section is constructed and some model parameters varying with range are presented. The analysis conclusions are useful in optimizing the design of radar oceanographic experiments, improving the inversion of sea-state and detecting lowly moving targets.
出处
《电波科学学报》
EI
CSCD
北大核心
2006年第3期432-436,440,共6页
Chinese Journal of Radio Science
基金
国家自然科学基金(60571065
60201003
40406020)
国家高技术研究发展计划(2004AA604080)资助项目
关键词
宽波束
归一化标准差
时间相关性
统计模型
broad-beam, normalized standard deviation, time correlation, statistical model
