OSMAR-S型高频地波雷达在南海北部遥测海表面流的数据检验
|
摘要
为掌握OSMAR-S型高频地波雷达在南海北部遥测海表面流的误差分布情况,首先分析该型雷达测流的空间分布情况,发现在雷达连线中间区域存在盲区。将雷达测流数据与ADCP测流数据进行比对,中间区域流速误差小于其他区域。为得到更为全面的分析,对雷达测流数据进行潮流调和分析,计算得到潮流和余流,并分别与预报系统的潮流数据、气象站风场数据进行比对,在计算中采用快速Fourier变换进行数据滤波处理。结果显示在雷达电磁波覆盖的向外海一侧中间区域,特别是在与两雷达站夹角接近90°的区域,测流精度高于其他区域,并基于以上结论给出了雷达使用中的建议。
In order to grasp the error distribution of the OSMAR-S HF ground wave radar for the remote sea surface currents in the northern South China Sea, the spatial distribution of the radar current data is firstly analyzed, and it is found that there is a blind zone in the middle of the radar connection. The radar current data are compared with the ADCP current data, and the current velocity error in the middle region is found to be smaller than in other regions. In order to obtain a more comprehensive analysis, the harmonic analysis method is applied, the tidal current and residual current are calculated and compared with the tidal current data of the forecast system and the wind data of the weather station, respectively, with the fast Fourier transform for data filtering used in the calculation process. The results show that in the middle region of the outward sea side covered by the radar electromagnetic waves, especially in the region close to 90° between the two radar stations,the current accuracy is higher than in other regions. Based on the above conclusions, some recommendations for the use of radars are given in this paper.
In order to grasp the error distribution of the OSMAR-S HF ground wave radar for the remote sea surface currents in the northern South China Sea, the spatial distribution of the radar current data is firstly analyzed, and it is found that there is a blind zone in the middle of the radar connection. The radar current data are compared with the ADCP current data, and the current velocity error in the middle region is found to be smaller than in other regions. In order to obtain a more comprehensive analysis, the harmonic analysis method is applied, the tidal current and residual current are calculated and compared with the tidal current data of the forecast system and the wind data of the weather station, respectively, with the fast Fourier transform for data filtering used in the calculation process. The results show that in the middle region of the outward sea side covered by the radar electromagnetic waves, especially in the region close to 90° between the two radar stations,the current accuracy is higher than in other regions. Based on the above conclusions, some recommendations for the use of radars are given in this paper.
引文
[1]侍茂崇,高郭平,鲍献文.海洋调查方法[M].青岛:中国海洋大学出版社,2016.SHI Mao-chong,GAO Guo-ping,BAO Xian-wen.Methods of marine survey[M].Qingdao:China Ocean University Press,2016.
[2]刘科峰,蒋国荣,陈奕德,等.基于卫星漂流浮标的南海表层海流观测分析[J].热带海洋学报,2014,33(05):13-21.LIU Ke-feng,JIANG Guo-rong,CHEN Yi-de,et al.Analysis of upper-ocean surface currents of the South China Sea derived from satellite-tracked drifter data[J].Journal of Tropical Oceanography,2014,33(05):13-21.
[3]Barrick D E.History present status and future directions of H F surface wave radars in the US[C]//Proceedings of the International Conference on Radar.New York:IEEE Press,2003:652-655.
[4]孙芳,刘玉红,李佳讯.高频地波雷达的发展与应用现状分析[J].海洋测绘,2018,38(4):22-24.SUN Fang,LIU Yuhong,LI Jiaxun.Review of developments and applications status of high-frequency radar[J].Hydrographic Surveying and Charting,2018,38(4):22-24.
[5]Shay L.Current structure variations detected by high-frequency radar and vector-measuring current meters[J].Journal of Atmospheric&Oceanic Technology,1998,15(1):237-256.
[6]Emery B M,Washburn L,Harlan J A.Evaluating radial current measurements from CODAR high-frequency radars with moored current meters[J].Journal of Atmospheric and Oceanic Technology,2004,21(8):1259-1271.
[7]薛佳丽,潘增弟.地波雷达观测数据验证的软件实现及初步分析[J].海洋科学进展,2010,28(3):372-381.XUE Jia-li,PAN Zeng-di.Software programming and preliminary analysis to verify ground wave radar observational data of oceanic current[J].Advances in Marine Science,2010,28(3):372-381.
[8]文必洋,李自立,周浩,等.便携式高频地波雷达东海洋山海域探测深度试验[J].电子与信息学报,2010,32(04):998-1002.Wen Bi-yang,Li Zi-li,Zhou Hao,et al.Test for the detection depth with HF portable ground wave radar at Yangshan area of Eastern China Sea[J].Journal of Electronics&Information Technology,2010,32(04):998-1002.
[9]龚子平,柯亨玉,侯杰昌,等.高频地波雷达海洋表面流测量误差分析[J].武汉大学学报(理学版),2007,53(3):356-360.GONG Ziping,KE Hengyu,HOU Jiechang,et al.Error analyze of current measurements by HF surface wave radar[J].Journal of Wuhan University:Natural Science Edition,2007,53(3):356-360.
[10]杨洪国,黄强.GOCE引力梯度数据滤波方法的设计与结果分析[J].大地测量与地球动力学,2014,34(3):146-150.Yang Hongguo,Huang Qiang.Design of filtering method of GOCE gravity gradient and analysis of result[J].Journal of Geodesy and Geodynamics,2014,34(3):146-150.
[11]Pawlowicz R,Beardsley B,Lentz S.Classicaltidal harmonic analysis including error estimates in MATLAB using T_TIDE[J].Comput&Geosci,2002,28:929-937.
[12]Schlitzer R.Ocean data view[EB/OL].https://odv.awi.de,2018.
[2]刘科峰,蒋国荣,陈奕德,等.基于卫星漂流浮标的南海表层海流观测分析[J].热带海洋学报,2014,33(05):13-21.LIU Ke-feng,JIANG Guo-rong,CHEN Yi-de,et al.Analysis of upper-ocean surface currents of the South China Sea derived from satellite-tracked drifter data[J].Journal of Tropical Oceanography,2014,33(05):13-21.
[3]Barrick D E.History present status and future directions of H F surface wave radars in the US[C]//Proceedings of the International Conference on Radar.New York:IEEE Press,2003:652-655.
[4]孙芳,刘玉红,李佳讯.高频地波雷达的发展与应用现状分析[J].海洋测绘,2018,38(4):22-24.SUN Fang,LIU Yuhong,LI Jiaxun.Review of developments and applications status of high-frequency radar[J].Hydrographic Surveying and Charting,2018,38(4):22-24.
[5]Shay L.Current structure variations detected by high-frequency radar and vector-measuring current meters[J].Journal of Atmospheric&Oceanic Technology,1998,15(1):237-256.
[6]Emery B M,Washburn L,Harlan J A.Evaluating radial current measurements from CODAR high-frequency radars with moored current meters[J].Journal of Atmospheric and Oceanic Technology,2004,21(8):1259-1271.
[7]薛佳丽,潘增弟.地波雷达观测数据验证的软件实现及初步分析[J].海洋科学进展,2010,28(3):372-381.XUE Jia-li,PAN Zeng-di.Software programming and preliminary analysis to verify ground wave radar observational data of oceanic current[J].Advances in Marine Science,2010,28(3):372-381.
[8]文必洋,李自立,周浩,等.便携式高频地波雷达东海洋山海域探测深度试验[J].电子与信息学报,2010,32(04):998-1002.Wen Bi-yang,Li Zi-li,Zhou Hao,et al.Test for the detection depth with HF portable ground wave radar at Yangshan area of Eastern China Sea[J].Journal of Electronics&Information Technology,2010,32(04):998-1002.
[9]龚子平,柯亨玉,侯杰昌,等.高频地波雷达海洋表面流测量误差分析[J].武汉大学学报(理学版),2007,53(3):356-360.GONG Ziping,KE Hengyu,HOU Jiechang,et al.Error analyze of current measurements by HF surface wave radar[J].Journal of Wuhan University:Natural Science Edition,2007,53(3):356-360.
[10]杨洪国,黄强.GOCE引力梯度数据滤波方法的设计与结果分析[J].大地测量与地球动力学,2014,34(3):146-150.Yang Hongguo,Huang Qiang.Design of filtering method of GOCE gravity gradient and analysis of result[J].Journal of Geodesy and Geodynamics,2014,34(3):146-150.
[11]Pawlowicz R,Beardsley B,Lentz S.Classicaltidal harmonic analysis including error estimates in MATLAB using T_TIDE[J].Comput&Geosci,2002,28:929-937.
[12]Schlitzer R.Ocean data view[EB/OL].https://odv.awi.de,2018.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |