Ocean Surface Current Inversion Method for a Doppler Scatterometer

	Ocean Surface Current Inversion Method for a Doppler Scatterometer
	Bao, Qingliu; Lin, Mingsen; Zhang, Youguang; Dong, Xiaolong; Lang, Shuyan; Gong, Peng
刊名	IEEE Transactions on Geoscience and Remote Sensing
	2017
ISSN号	0196-2892
英文摘要	The ocean surface current is a very important parameter of ocean dynamic environment. It is connected to global climate change, marine environment forecasting, marine navigation, engineering security, and so on. The observation and prediction of ocean surface current have attracted more and more concern. Doppler Scatterometer (DopScat) is a new type of radar for ocean surface wind and current field remote sensing. The ocean surface current inversion method of DopScat impacts the measurement accuracy directly. In this paper, we establish the simulation model of a DopScat and provide the radial velocity error model. The numerical ocean surface Doppler spectrum model is also introduced and validated with the empirical geophysical model function in C-band (CDOP). The suitable ocean wave elevation spectrum and directional distribution function are selected. What is more, this paper establishes the maximum likelihood estimation (MLE) method to retrieve the ocean surface current and wind simultaneously. The retrieval accuracy for different positions in cross track, different wind speeds, and different current speeds are analyzed. At last, the global ocean current field is observed by DopScat and the ocean current is retrieved. In our simulation, the orbit parameters and observation geometry of DopScat are the same as that of HY-2A scatterometer. The retrieval results show that global current speed standard deviation can be smaller than 0.18 m/s for five days and 0.5 x 0.5 grid average. IEEE
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/6024]
专题	国家空间科学中心_微波遥感部
推荐引用方式 GB/T 7714	Bao, Qingliu,Lin, Mingsen,Zhang, Youguang,et al. Ocean Surface Current Inversion Method for a Doppler Scatterometer[J]. IEEE Transactions on Geoscience and Remote Sensing,2017.
APA	Bao, Qingliu,Lin, Mingsen,Zhang, Youguang,Dong, Xiaolong,Lang, Shuyan,&Gong, Peng.(2017).Ocean Surface Current Inversion Method for a Doppler Scatterometer.IEEE Transactions on Geoscience and Remote Sensing.
MLA	Bao, Qingliu,et al."Ocean Surface Current Inversion Method for a Doppler Scatterometer".IEEE Transactions on Geoscience and Remote Sensing (2017).