干旱区生态环境知识资源中心(Arid): Potential of soil moisture estimation using C-band polarimetric SAR data in arid regions

Arid

DOI	10.1080/01431161.2018.1516320
	Potential of soil moisture estimation using C-band polarimetric SAR data in arid regions
	Yang, Liping 1; Feng, Xiaodong 2; Liu, Fei 2; Liu, Jing 2; Sun, Xiaohui 2
通讯作者	Yang, Liping
来源期刊	INTERNATIONAL JOURNAL OF REMOTE SENSING
ISSN	0143-1161
EISSN	1366-5901
出版年	2019
卷号	40 期号:5-6 页码:2138-2150
英文摘要	Soil moisture plays an important role in various applications such as hydrology, agronomy, climatology and ecology. Over the past few decades, images acquired by PolSAR (Polarimetric Synthetic Aperture Radar) systems have raised much interest in the remote sensing community. However, only a few studies have analysed the potential use of polarimetric parameters for the estimation of soil moisture. Taking Juyanze as the study area, two feature extraction methods, the simple polarimetric intensity and phase processing, and the polarimetric decomposition were used to extract different polarimetric parameters. The response of single, multiple, and combined polarimetric parameters to bare surface soil moisture was investigated based on linear and non-linear regression strategies in using fully polarimetric RADARSAT-2 SAR (Synthetic Aperture Radar) imagery and field measurements. The results indicate that each individual polarimetric parameter at C-band is not very sensitive to surface soil moisture under this investigation. However, with the increasing number of polarimetric parameters, the correlation between soil moisture and polarimetric parameters improves steadily and the root mean square error (RMSE) and mean absolute error (MAE) decreased gradually. Combined polarimetric parameters have little improvement on the correlation between soil moisture and polarimetric parameters. The non-linear regression method can improve the correlation to some extent. However, the preliminary results so far still do not satisfy the accuracy of using the polarimetric parameters to inverse soil moisture. Further investigations are required in the direction of a better characterization and exploitation of polarimetric SAR data for the retrieval of soil moisture in arid regions.
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000464043900033
WOS关键词	PARAMETERS ; RETRIEVAL ; SURFACE
WOS类目	Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216509
作者单位	1.Changan Univ, Sch Geol Engn & Geomat, Xian, Shaanxi, Peoples R China; 2.Changan Univ, Sch Earth Sci & Resources, Xian, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Yang, Liping,Feng, Xiaodong,Liu, Fei,et al. Potential of soil moisture estimation using C-band polarimetric SAR data in arid regions[J],2019,40(5-6):2138-2150.
APA	Yang, Liping,Feng, Xiaodong,Liu, Fei,Liu, Jing,&Sun, Xiaohui.(2019).Potential of soil moisture estimation using C-band polarimetric SAR data in arid regions.INTERNATIONAL JOURNAL OF REMOTE SENSING,40(5-6),2138-2150.
MLA	Yang, Liping,et al."Potential of soil moisture estimation using C-band polarimetric SAR data in arid regions".INTERNATIONAL JOURNAL OF REMOTE SENSING 40.5-6(2019):2138-2150.