高频雷达海流观测中流速测量误差的传播  

Error transfer from radial to total vector current in high-frequency radar oceanic surface current measurement

作　　者：赖叶平 王玉皞[1] 周浩[2] 徐新军 LAI Yeping;WANG Yuhao;ZHOU Hao;XU Xinjun(School of Information Engineering,Nanchang University,Nanchang 330031,China;School of Electronic Information,Wuhan University,Wuhan 430072,China;Wuhan Hailan Ruihai Marine Science and Technology Co.Ltd.,Wuhan 430073,China)

机构地区：[1]南昌大学信息工程学院,江西南昌330031 [2]武汉大学电子信息学院,湖北武汉430072 [3]武汉海兰瑞海海洋科技有限公司,湖北武汉430073

出　　处：《华中科技大学学报（自然科学版）》2021年第12期94-98,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金青年基金资助项目(41906171);高等学校博士后科学基金资助项目(2020T130275).

摘　　要：为了分析高频雷达输出的径向流测量误差和矢量流测量误差之间的关系,从矢量流合成的过程出发,推导了任意雷达站点数目情况下的误差几何缩放因子的解析表达式,该表达式表明雷达站点的数目和位置均会影响误差几何缩放因子的值.此外,利用实测数据分析了实际情况下径向流误差和矢量流误差之间的关系,结果表明:给出的误差几何缩放因子可以很好地量化径向流误差与矢量流误差的关系,但是矢量流误差与径向流误差的定量关系也受到矢量流合成过程中具体的处理方法的影响.To study the relationship between radial current measurement error and total vector current measurement error in highfrequency radar,an analytical model for the geometric dilution of precision(GDOP)was presented,based on the total vector current calculation process.The presented model suggests that the GDOP is controlled by both the number of the radar stations and their positions.Besides,actual relationship between the radial current measurement error and total vector current measurement error was also analyzed using dataset collected by a field experiment.The results indicate that the derived GDOP can well quantify the error between the radial currents and the total vector currents.Nevertheless,the quantitative relationship between radial current measurement error and total vector current measurement error is also affected by the total vector current calculation method.

关 键 词：雷达应用 遥感 海洋表面流 海流测量 测量误差 

分 类 号：TN959.72[电子电信—信号与信息处理] P715.7[电子电信—信息与通信工程]