Study of sea-surface slope distribution and its effect on radar backscatter based on Global Precipitation Measurement Ku-band precipitation radar measurements

doi:10.1117/1.JRS.12.016006

	Study of sea-surface slope distribution and its effect on radar backscatter based on Global Precipitation Measurement Ku-band precipitation radar measurements
	Yan, Qiushuang 1,2; Zhang, Jie 2; Fan, Chenqing 2; Wang, Jing 1; Meng, Junmin 2
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).