FIRST ASSESSMENT OF HY-2A ALTIMETER DATA OVER ANTARCTICA AND GREENLAND USING CROSSOVER ANALYSIS

	FIRST ASSESSMENT OF HY-2A ALTIMETER DATA OVER ANTARCTICA AND GREENLAND USING CROSSOVER ANALYSIS
	Jiang, Maofei; Xu, Ke; Xiong, Yujing
	2018
会议日期	JUL 22-27, 2018
会议地点	Valencia, SPAIN
关键词	HY-2A satellite radar altimeter ice sheets elevation measurements crossover analysis
页码	8518-8521
英文摘要	The radar altimeter onboard China's HY-2A satellite was launched in August 2011 and it can provide the surface elevation measurements from 80.6 degrees N to 80.6 S. In this letter, the precision of the HY-2A elevation measurements over the Antarctica ice sheet (AIS) and the Greenland ice sheet (GrIS) is assessed through crossover analysis. We process the HY-2A sensor geophysical dataset records (SGDR) data from June 1, 2014 to June 14, 2014. The OCOG, Ice-1 and Ice-2 algorithms are applied to retrack the waveforms of HY-2A altimeter over the AIS and GrIS. Crossover analysis shows that the Ice-2 algorithm performs best among the three algorithms. The precision of the HY2A altimeter elevations are found to vary as a function of the threshold of the surface slope from similar to 56 cm to similar to 63 cm over the AIS, and from similar to 29 cm to similar to 50 cm over the GrIS.
会议录	IGARSS 2018 - 2018 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM
语种	英语
ISSN号	2153-6996
ISBN号	978-1-5386-7150-4
内容类型	会议论文
源URL	[http://ir.nssc.ac.cn/handle/122/6710]
专题	国家空间科学中心_微波遥感部
推荐引用方式 GB/T 7714	Jiang, Maofei,Xu, Ke,Xiong, Yujing. FIRST ASSESSMENT OF HY-2A ALTIMETER DATA OVER ANTARCTICA AND GREENLAND USING CROSSOVER ANALYSIS[C]. 见:. Valencia, SPAIN. JUL 22-27, 2018.