摘要
温度、压力和电导率是表征海水性能最主要的三个物理量,研究海水电导率的分布与变化,有助于人们深入研究海水电磁特性及化学组成.文中建立了一种基于高频地波雷达的海水电导率反演机制,利用高频电磁波的海面衰减特性,通过分析高频地波雷达在海面不同雷达观测元间的附加衰减数据,结合区域验证过的电波衰减方程,建立海面电导率和地波Norton衰减因子之间的单调对应关系模型,进而获得沿岸海洋表面电导率的分布信息.实验结果表明:利用高频地波雷达遥感海面电导率具有可行性.
Besides temperature and pressure, conductivity is among the most relevant parameters characterizing the physical state of seawater. By analyzing distribution and variability of water electrical conductivity, people can research on electromagnetic char- acteristics and chemical composition of seawater. In this paper, a method for obtaining the distribution information of sea surface conductivity with HF surface wave radar is studied. Based on the ground wave propagation attenuation characteristics on the sea surface, the ground wave attenuation factors with different observing patches are ana- lyzed. Then the model of the sea surface conductivity and the ground wave attenuation factor is built. After that, the algorithm of sea surface conductivity inversion based on HF surface wave radar system is presented. The experiment results indicate that this method is feasible.
出处
《电波科学学报》
EI
CSCD
北大核心
2014年第4期706-710,722,共6页
Chinese Journal of Radio Science
基金
国家高技术发展研究计划(863计划:2012AA091701)
