摘要
为了拓宽便携式高频地波雷达(OSMAR-S)的应用场合,提高其海态监测的能力,通过船载雷达系统走航的方式获取大范围的海洋回波信息.利用实测数据中形态多样的一阶海洋回波谱图,分析了海流、风向和雷达探测张角对回波谱的影响,讨论了径向流速和风向信息提取的可行性.研究结果表明:在船沿岸走航的情况下,海流引起回波谱频点的偏移,风向规律地改变谱图的形态,岸基单站雷达的风向模糊问题得以解决;在船四面环海航行的情况下,单个回波频点存在双到达角和风向模糊的问题.
In order to broaden the applications of a portable high frequency surface wave radar （HFSWR） OSMAR-S, and improve radar＇s capability of sea state monitoring, the large-scale infor- mation of sea echo can be obtained with a shipborne radar system by underway method. The effect of current, wind direction and radar aperture angle on the first-order sea echo spectrum was analyzed by the spectrums with diverse forms from measured data, and discusses the feasibilities of radial velocity and wind direction extraction by this radar. Simulations show that currents lead to echo＇s Doppler shift when the ship is taking a coastwise voyage, different wind directions alter the shape of spectrum regularly, and the ambiguous wind direction of shore-based monostatic radars can be solved. It will bring the problems of dual-angle and ambiguous wind direction in a single frequency point when the ship is seagirt.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2016年第10期103-107,共5页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(61371063)
国家重大科学仪器设备开发专项资助项目(2013YQ160793)
