Shenzhou-4 spaceborne altimeter waveform processing and significant wave height retrieval
文献类型：期刊论文
| 作者 | Ji Yonggang; Zhang Jie; Zhang Youguang; Meng Junmin |
| 刊名 | Acta oceanologica sinica
 |
| 出版日期 | 2006 |
| 卷号 | 25期号:3页码:40-47 |
| 关键词 | Sz-4 spaceborne altimeter Significant wave height Double peaks Waveform retracking Waveform fit |
| ISSN号 | 0253-505X |
| 通讯作者 | Ji yonggang(jiyongang@gmail.com) |
| 英文摘要 | 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. |
| WOS研究方向 | Oceanography |
| WOS类目 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000239142900005 |
| 出版者 | CHINA OCEAN PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2379956 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Ji Yonggang |
| 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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来源：中国科学院大学
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