Study of sea-surface slope distribution and its effect on radar backscatter based on Global Precipitation Measurement Ku-band precipitation radar measurements | |
Yan, Qiushuang1,2; Zhang, Jie2; Fan, Chenqing2; Wang, Jing1; Meng, Junmin2 | |
刊名 | JOURNAL OF APPLIED REMOTE SENSING |
2018-01-04 | |
卷号 | 12 |
关键词 | Global Precipitation Measurement Ku-band precipitation radar cross-section measurements sea-surface slope distribution geometrical optics model peakedness coefficient determination performance comparison |
ISSN号 | 1931-3195 |
DOI | 10.1117/1.JRS.12.016006 |
英文摘要 | The collocated normalized radar backscattering cross-section measurements from the Global Precipitation Measurement (GPM) Ku-band precipitation radar (KuPR) and the winds from the moored buoys are used to study the effect of different sea-surface slope probability density functions (PDFs), including the Gaussian PDF, the Gram-Charlier PDF, and the Liu PDF, on the geometrical optics (GO) model predictions of the radar backscatter at low incidence angles (0 deg to 18 deg) at different sea states. First, the peakedness coefficient in the Liu distribution is determined using the collocations at the normal incidence angle, and the results indicate that the peakedness coefficient is a nonlinear function of the wind speed. Then, the performance of the modified Liu distribution, i.e., Liu distribution using the obtained peakedness coefficient estimate; the Gaussian distribution; and the Gram-Charlier distribution is analyzed. The results show that the GO model predictions with the modified Liu distribution agree best with the KuPR measurements, followed by the predictions with the Gaussian distribution, while the predictions with the Gram-Charlier distribution have larger differences as the total or the slick filtered, not the radar filtered, probability density is included in the distribution. The best-performing distribution changes with incidence angle and changes with wind speed. (c) The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. |
资助项目 | National Science Foundation of China[61501130] |
WOS关键词 | MEAN-SQUARE SLOPE ; WIND-SPEED ; MODEL ; SPECTRUM |
WOS研究方向 | Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology |
语种 | 英语 |
出版者 | SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS |
WOS记录号 | WOS:000419768700004 |
内容类型 | 期刊论文 |
源URL | [http://ir.fio.com.cn:8080/handle/2SI8HI0U/27224] |
专题 | 自然资源部第一海洋研究所 |
通讯作者 | Fan, Chenqing |
作者单位 | 1.Ocean Univ China, Coll Informat & Engn, Qingdao, Shandong, Peoples R China 2.State Ocean Adm, Inst Oceanog 1, Qingdao, Shandong, Peoples R China |
推荐引用方式 GB/T 7714 | Yan, Qiushuang,Zhang, Jie,Fan, Chenqing,et al. Study of sea-surface slope distribution and its effect on radar backscatter based on Global Precipitation Measurement Ku-band precipitation radar measurements[J]. JOURNAL OF APPLIED REMOTE SENSING,2018,12. |
APA | Yan, Qiushuang,Zhang, Jie,Fan, Chenqing,Wang, Jing,&Meng, Junmin.(2018).Study of sea-surface slope distribution and its effect on radar backscatter based on Global Precipitation Measurement Ku-band precipitation radar measurements.JOURNAL OF APPLIED REMOTE SENSING,12. |
MLA | Yan, Qiushuang,et al."Study of sea-surface slope distribution and its effect on radar backscatter based on Global Precipitation Measurement Ku-band precipitation radar measurements".JOURNAL OF APPLIED REMOTE SENSING 12(2018). |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论