气候变化领域集成服务门户(CCPortal): Quad and compact multitemporal C-band PolSAR observations for crop characterization and monitoring

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DOI	10.1016/j.jag.2018.09.009
	Quad and compact multitemporal C-band PolSAR observations for crop characterization and monitoring
	Homayouni S.; McNairn H.; Hosseini M.; Jiao X.; Powers J.
发表日期	2019
ISSN	15698432
起始页码	78
结束页码	87
卷号	74
英文摘要	Monitoring crop condition using optical satellite indices has a legacy of several decades. Early warning of variances in crop production is vital in mitigating regional and global food insecurity. Adoption of optical vegetation indices for this purpose is widespread, yet cloud cover impedes the acquisition of these data. Although early research using scatterometers and aircraft hinted at the sensitivity of Synthetic Aperture Radar (SAR) responses to crop development, the implementation of satellite SAR observations in operational crop condition monitoring is limited. In the research presented here, volume-to-surface (V/S) scattering ratios derived from C-band RADARSAT-2 quad and simulated compact polarimetric (QP and CP) imagery are assessed for their potential to monitor crop growth. Both V/S ratios were strongly correlated with optical vegetation indices, including the widely adopted Normalized Difference and Soil Adjusted Vegetation Indices. The changes in the ratio of volume to surface scattering were correlated with variations in crop biomass. The results support the potential of a SAR scattering ratio for crop condition monitoring. In particular, encouraging results were reported for compact polarimetry, a mode that can be implemented to deliver broader swath coverage conducive to regional and national monitoring. © 2018
英文关键词	C-band quad and compact polarimetric synthetic aperture radar; Crop characterization; Crop monitoring
语种	英语
scopus关键词	crop production; data acquisition; monitoring; RADARSAT; satellite data; satellite imagery; scattering; synthetic aperture radar
来源期刊	International Journal of Applied Earth Observation and Geoinformation
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156551
作者单位	Deptartment of Geography, Environment, and Geomatics, University of Ottawa, Canada; Ottawa Center of Research & Development, Agriculture & Agri-Food, Canada; Science and Technology Branch, Agriculture and Agri-Food Canada, Winnipeg, Canada; Department of Geography and Environmental Studies, University of Ottawa, Ottawa, Canada
推荐引用方式 GB/T 7714	Homayouni S.,McNairn H.,Hosseini M.,et al. Quad and compact multitemporal C-band PolSAR observations for crop characterization and monitoring[J],2019,74.
APA	Homayouni S.,McNairn H.,Hosseini M.,Jiao X.,&Powers J..(2019).Quad and compact multitemporal C-band PolSAR observations for crop characterization and monitoring.International Journal of Applied Earth Observation and Geoinformation,74.
MLA	Homayouni S.,et al."Quad and compact multitemporal C-band PolSAR observations for crop characterization and monitoring".International Journal of Applied Earth Observation and Geoinformation 74(2019).