摘要
星载微波散射计可以提供全球、全天候、高精度、高分辨率和短周期的海面风场数据。根据雷达天线足印的形状,雷达散射计主要包括扇形波束体制与笔形波束体制两种形式。概述了两种体制微波散射计在设计结构及后期数据处理算法中的优缺点,并对两种不同体制散射计的系统仿真数据进行比较。分析结果表明:对于小型卫星平台,Ku波段的旋转扫描扇形波束散射计比笔形波束圆锥扫描散射计具有更优的风场反演性能。
Space-borne microwave scatterometer can provide sea surface wind field data with global, all-weather,high-accuracy, high-resolution and short cycle features. According to the shape of footprint, radar scatterometers have two types： fan-beam and pencil-beam. This paper summarizes the advantages and disadvantages of these two types of scatterometers in terms of structural design and late time data processing. The simulated data from these two types of scatterometer systems are compared, and it is found that for small satellite platform, the Kuband fan-beam scatterometer has better performance in wind retrieval than that of pencil-beam scatterometer.
作者
郎姝燕
林文明
LANG Shu-yan LIN Wen-ming(National Satellite Ocean Application Service, Beijing 100081, China Institut de Ciencies de Mar （ICM-CSIC）, Barcelona 08003, Spain)
出处
《海洋技术学报》
2017年第1期19-23,共5页
Journal of Ocean Technology
基金
中国科学院微波遥感热技术重点实验室研究基金--海洋二号卫星散射计辐射计联合反演海面风场和陆地土壤湿度方法研究
关键词
扇形波束
笔形波束
风场反演
散射计
fan-beam
pencil-beam
wind field retrieval
scatterometer
