摘要
高频地波雷达探测海流的过程中,产生海流测量误差的影响因素有很多;文中提出了定向误差系数的概念,通过实测数据计算和分析了定点OSMAR的流速测量误差与该点定向误差系数的相关性,结果表明雷达的定向误差是雷达海流测量误差的重要来源;并计算出了OSMAR波束覆盖的中心区域上,雷达的定向偏差在1°左右;该结论对于提高高频地波雷达测量准确度具有直接的指导意义。
During the course of measuring sea surface current by HFSW, there are lots of elements resulting in the error of radial current velocity. A new concept of direction--finding error coeffieientis is proposed. Meanwhile, the correlation between direction--positioning error and the error of ocean curent radial velocity measured by OSMAR is also discussed. And, some conclusions are drawn from the above researches. First, the direction-positioning error is an important source that results in the error of ocean current radial velocity. Second, within the center field of the ocean covered by the OSMAR beam, the direction--finding angle error is 1 degree. The conclusions are important in improving the measurement precision of ocean current radial velocity for OSMAR and they give direct guidance to the associated studies.
出处
《计算机测量与控制》
CSCD
2007年第4期452-454,500,共4页
Computer Measurement &Control
基金
国家863计划资助项目(863-818-01-02)
国家自然科学基金(60201003)。
关键词
OSMAR
定向误差
误差系数
高频地波雷达
径向流
OSMAR, direction--finding error, direction--finding error coefficient, HF surface wave radar, ocean radial surface current
