Shenzhou-4 spaceborne altimeter waveform processing and significant wave height retrieval

IOCAS-IR > 海洋环流与波动重点实验室

	Shenzhou-4 spaceborne altimeter waveform processing and significant wave height retrieval
	Ji Yonggang ; Zhang Jie; Zhang Youguang ; Meng Junmin
	2006
发表期刊	ACTA OCEANOLOGICA SINICA
卷号	25 期号:3 页码:40-47
文章类型	Article
摘要	The Shenzhou-4 spaceborne (SZ-4) altimeter waveforms were processed, and then the significant wave heights (SWH) was retrieved on the basis of waveform fitting and waveform retracking. Waveforms processing includes the waveform Is averaging, the elimination of thermal noise and the waveforms normalization. Double peaks were found on each SZ-4 waveform, and it was pointed out that the region of waveforms with the second peak is abnormal and its effects on the whole waveform in the waveform fit should be taken into consideration. To obtain the width of the waveform leading-edge, a method was proposed to find the starting point of waveform, and the half-power point of waveform was found by retracking the waveform. The normalized waveforms were fitted with the Haynes model by using the weighting least square fit method. Then the selections of the weighting coefficients and their effects on significant wave hight retrieving were discussed, and the optimal five-region weighting method was proposed. At last, the SWH data of SZ -4 altimeter retrieved by using the proposed method were compared with those of ERS -2 and Jason -1 altimeter, and it was concluded that the SZ -4 altimeter can detect significant wave height.
关键词	Sz-4 Spaceborne Altimeter Significant Wave Height Double Peaks Waveform Retracking Waveform Fit
收录类别	SCI
语种	英语
WOS记录号	WOS:000239142900005
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/32581
专题	海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China 4.Natl Satellite Ocean Applicat Serv, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Ji Yonggang,Zhang Jie,Zhang Youguang,et al. Shenzhou-4 spaceborne altimeter waveform processing and significant wave height retrieval[J]. ACTA OCEANOLOGICA SINICA,2006,25(3):40-47.
APA	Ji Yonggang,Zhang Jie,Zhang Youguang,&Meng Junmin.(2006).Shenzhou-4 spaceborne altimeter waveform processing and significant wave height retrieval.ACTA OCEANOLOGICA SINICA,25(3),40-47.
MLA	Ji Yonggang,et al."Shenzhou-4 spaceborne altimeter waveform processing and significant wave height retrieval".ACTA OCEANOLOGICA SINICA 25.3(2006):40-47.

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Shenzhou-4 spaceborn（976KB）	期刊论文	出版稿	限制开放	ODC PDDL	浏览