CALIBRATION AND VALIDATION OF THE HY-2 SCATTEROMETER BACKSCATTER MEASUREMENTS OVER OCEAN

	CALIBRATION AND VALIDATION OF THE HY-2 SCATTEROMETER BACKSCATTER MEASUREMENTS OVER OCEAN
	Zhu, Jintai; Dong, Xiaolong; Yun, Risheng
	2014
会议名称	IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
会议日期	JUL 13-18, 2014
会议地点	Quebec, CANADA
关键词	HY-2A satellite scatterometer calibration and validation numerical ocean calibration
通讯作者	Zhu, JT (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, CAS Key Lab Microwave Remote Sensing, Beijing 100190, Peoples R China.
英文摘要	The Normalized Radar Cross-Sections (NRCS, sigma(0)) measured by spaceborne scatterometer are used to determine the near-surface wind field using the geophysical model functions (GMF). The accuracy of the retrieved wind field is a sensitive function of the radiometric accuracy of the sigma(0) measurements. Therefore, in-orbit calibration is essential for the retrieval of optimum quality geophysical products. In this paper, the scatterometer onboard HY-2A satellite (HY-2 SCAT) is calibrated using Numerical Ocean Calibration (NOC) and its winds retrieval after calibration are validated by winds from global buoys and from the European Centre for Medium-Range Weather Foresting(ECMWF) Numerical Weather Prediction model (NWP). The standard deviations for wind speed and wind direction against buoy winds are better than 1.3 m/s and 15 degrees, indicating that the HY-2 SCAT calibration has been successful and that HY-2 SCAT wind products after NOC are of high quality.
收录类别	CPCI
会议主办者	IEEE, Inst Elect & Elect Engineers, Geoscience & Remote Sensing Soc, Canadian Remote Sensing Soc
会议录	2014 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
会议录出版者	IEEE
语种	英语
ISSN号	2153-6996
ISBN号	978-1-4799-5775-0
内容类型	会议论文
源URL	[http://ir.nssc.ac.cn/handle/122/4337]
专题	国家空间科学中心_微波遥感部
推荐引用方式 GB/T 7714	Zhu, Jintai,Dong, Xiaolong,Yun, Risheng. CALIBRATION AND VALIDATION OF THE HY-2 SCATTEROMETER BACKSCATTER MEASUREMENTS OVER OCEAN[C]. 见:IEEE International Geoscience and Remote Sensing Symposium (IGARSS). Quebec, CANADA. JUL 13-18, 2014.