Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.rse.2019.111561 |
Assessment of rice growth conditions in a semi-arid region of India using the Generalized Radar Vegetation Index derived from RADARSAT-2 polarimetric SAR data | |
Mandal, Dipankar1; Kumar, Vineet1; Ratha, Debanshu1; Lopez-Sanchez, Juan M.2; Bhattacharya, Avik1; McNairn, Heather3; Rao, Y. S.1; Ramana, K. V.4 | |
通讯作者 | Mandal, Dipankar |
来源期刊 | REMOTE SENSING OF ENVIRONMENT
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ISSN | 0034-4257 |
EISSN | 1879-0704 |
出版年 | 2020 |
卷号 | 237 |
英文摘要 | Rice growth monitoring using Synthetic Aperture Radar (SAR) is recognized as a promising approach for tracking the development of this important crop. Accurate spatio-temporal information of rice inventories is required for water resource management, production risk occurrence, and yield forecasting. This research investigates the potential of the proposed Generalized volume scattering model based Radar Vegetation Index (GRVI) for monitoring rice growth at different phenological stages. The GRVI is derived using the concept of a geodesic distance (GD) between Kennaugh matrices projected on a unit sphere. We utilized this concept of GD to quantify a similarity measure between the observed Kennaugh matrix (representation of observed Polarimetric SAR information) and the Kennaugh matrix of a generalized volume scattering model (a realization of scattering media). The similarity measure is then modulated with a factor estimated from the ratio of the minimum to the maximum GD between the observed Kennaugh matrix and the set of elementary targets: trihedral, cylinder, dihedral, and narrow dihedral. In this work, we utilize a time series of C-band quad-pol RADARSAT-2 observations over a semi-arid region in Vijayawada, India. Among the several rice cultivation practices adopted in this region, we analyze the growth stages of direct seeded rice (DSR) and conventional tansplanted rice (TR) with the GRVI and crop biophysical parameters viz., Plant Area Index - PAI. The GRVI is compared for both rice types against the Radar Vegetation Index (RVI) proposed by Kim and van Zyl. A temporal analysis of the GRVI with crop biophysical parameters at different phenological stages confirms its trend with the plant growth stages. Also, the linear regression analysis confirms that the GRVI outperforms RVI with significant correlations with PAI (r >= 0.83 for both DSR and TR). In addition, PAI estimations from GRVI show promising retrieval accuracy with Root Mean Square Error (RMSE) < 1.05m(2) m(-2) and Mean Absolute Error (MAE) <0.85m(2) m(-2). |
英文关键词 | Rice GRVI SAR polarimetry Direct seeded rice RVI |
类型 | Article |
语种 | 英语 |
国家 | India ; Spain ; Canada |
开放获取类型 | Green Submitted |
收录类别 | SCI-E |
WOS记录号 | WOS:000509819300031 |
WOS关键词 | PADDY-RICE ; WATER PRODUCTIVITY ; TIME-SERIES ; WHEAT ; MODEL ; SENSITIVITY ; SCATTERING ; RETRIEVAL ; SENSORS ; HEIGHT |
WOS类目 | Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology |
WOS研究方向 | Environmental Sciences & Ecology ; 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/2XILL650/315439 |
作者单位 | 1.Indian Inst Technol, Microwave Remote Sensing Lab, Ctr Studies Resources Engn, Mumbai, Maharashtra, India; 2.Univ Alicante, Univ Inst Comp Res, Alicante, Spain; 3.Agr & Agri Food Canada, Ottawa Res & Dev Ctr, Ottawa, ON, Canada; 4.ISRO, Natl Remote Sensing Ctr, Agr Sci & Applicat Grp, Bangalore, Karnataka, India |
推荐引用方式 GB/T 7714 | Mandal, Dipankar,Kumar, Vineet,Ratha, Debanshu,et al. Assessment of rice growth conditions in a semi-arid region of India using the Generalized Radar Vegetation Index derived from RADARSAT-2 polarimetric SAR data[J],2020,237. |
APA | Mandal, Dipankar.,Kumar, Vineet.,Ratha, Debanshu.,Lopez-Sanchez, Juan M..,Bhattacharya, Avik.,...&Ramana, K. V..(2020).Assessment of rice growth conditions in a semi-arid region of India using the Generalized Radar Vegetation Index derived from RADARSAT-2 polarimetric SAR data.REMOTE SENSING OF ENVIRONMENT,237. |
MLA | Mandal, Dipankar,et al."Assessment of rice growth conditions in a semi-arid region of India using the Generalized Radar Vegetation Index derived from RADARSAT-2 polarimetric SAR data".REMOTE SENSING OF ENVIRONMENT 237(2020). |
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