摘要
针对星载GNSS-R台风观测资料研究工作较少的现状,首先介绍了全球首个GNSS-R星座的基本情况,包括轨道特点、载荷组成和数据分级,分析了其台风风速的反演算法。然后选取2018年2个典型的台风,对其风速观测数据进行了研究。研究表明,观测数据符合台风风速分布规律,具有较大的应用潜力。最后分析了台风观测数据存在的不足,主要表现在最大风速区和台风眼墙等区域采样率较低,难以提供精细风场信息。文章针对性地提出了星载GNSS-R接收机采样频率自适应调整的方案建议,可为发展星载GNSS-R技术提供参考。
Aiming at the situation of the less research on spaceborne GNSS-R typhoon observational data,the paper introduces the basic situation of the first GNSS-R constellation in the world,including orbit characteristics,payload and data classification,and analyses the inversion algorithm of the typhoon wind speed.Then,the data of typhoon in 2018 are analyzed.The results show that the observational data conform to the distribution law of typhoon wind speed and have great potential for application.The shortcomings of observation data are also analyzed,which is mainly manifested in the low sampling rate in the maximum wind speed area and typhoon eyewall,and it is difficult to provide fine wind field information.In this paper,a proposal for adaptive adjustment of sampling frequency of spaceborne GNSS-R receiver is further proposed.
作者
邵连军
周旋
张春华
刘洪伟
SHAO Lianjun;ZHOU Xuan;ZHANG Chunhua;LIU Hongwei(61741 Troops,Beijing 100094,China)
出处
《遥感信息》
CSCD
北大核心
2020年第4期35-39,共5页
Remote Sensing Information
关键词
星载
GNSS-R
台风
风速
采样频率
自适应调整
spaceborne
GNSS-R
typhoon
wind speed
sampling frequency
adaptive adjustment
作者简介
邵连军(1974-),男,博士,高级工程师,主要研究方向为卫星海洋遥感技术。E-mail:legendshao@163.com。
