Multitemporal Soil Moisture Retrieval over Bare Agricultural Areas by Means of Alpha Model with Multisensor SAR Data
Joint Authors
Zhang, Xiang
Tang, Xinming
Gao, Xiaoming
Zhao, Hui
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-05-23
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
The objective of this research is to optimize the Alpha approximation model for soil moisture retrieval using multitemporal SAR data.
The Alpha model requires prior knowledge of soil moisture range to constrain soil moisture estimation.
The solution of the Alpha model is an undetermined problem due to the fact that the number of observation equations is less than the number of unknown parameters.
This research primarily focused on the optimization of Alpha model by employing multisensor and multitemporal SAR data.
The disadvantage of the Alpha model can be eliminated by the combination of multisensor SAR data.
The optimized Alpha model was evaluated on the basis of a comprehensive campaign for soil moisture retrieval, which acquired multisensor time series SAR data and coincident field measurements.
The agreement between the estimated and measured soil moisture was within a root mean square error of 0.08 cm3/cm3 for both methods.
The optimized Alpha model shows an obvious improvement for soil moisture retrieval.
The results demonstrated that multisensor and multitemporal SAR data are favorable for time series soil moisture retrieval over bare agricultural areas.
American Psychological Association (APA)
Zhang, Xiang& Tang, Xinming& Gao, Xiaoming& Zhao, Hui. 2018. Multitemporal Soil Moisture Retrieval over Bare Agricultural Areas by Means of Alpha Model with Multisensor SAR Data. Advances in Meteorology،Vol. 2018, no. 2018, pp.1-17.
https://search.emarefa.net/detail/BIM-1118888
Modern Language Association (MLA)
Zhang, Xiang…[et al.]. Multitemporal Soil Moisture Retrieval over Bare Agricultural Areas by Means of Alpha Model with Multisensor SAR Data. Advances in Meteorology No. 2018 (2018), pp.1-17.
https://search.emarefa.net/detail/BIM-1118888
American Medical Association (AMA)
Zhang, Xiang& Tang, Xinming& Gao, Xiaoming& Zhao, Hui. Multitemporal Soil Moisture Retrieval over Bare Agricultural Areas by Means of Alpha Model with Multisensor SAR Data. Advances in Meteorology. 2018. Vol. 2018, no. 2018, pp.1-17.
https://search.emarefa.net/detail/BIM-1118888
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1118888