{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,17]],"date-time":"2026-04-17T18:04:36Z","timestamp":1776449076160,"version":"3.51.2"},"reference-count":62,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2022,10,24]],"date-time":"2022-10-24T00:00:00Z","timestamp":1666569600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Canadian Space Agency Class Grant and the Contribution Program","award":["11SUSMAPSH"],"award-info":[{"award-number":["11SUSMAPSH"]}]},{"name":"Canadian Space Agency Class Grant and the Contribution Program","award":["RGPIN 283211-2011"],"award-info":[{"award-number":["RGPIN 283211-2011"]}]},{"name":"Canadian plan for spatial missions of soil moisture and the National Science and Engineering Research Council of Canada","award":["11SUSMAPSH"],"award-info":[{"award-number":["11SUSMAPSH"]}]},{"name":"Canadian plan for spatial missions of soil moisture and the National Science and Engineering Research Council of Canada","award":["RGPIN 283211-2011"],"award-info":[{"award-number":["RGPIN 283211-2011"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>This study investigates the potential of L- and C- bands Polarimetric Synthetic Aperture Radar (PolSAR) data to monitor soil moisture over the forested sites of SMAP Validation Experiment 2012 (SMAPVEX12). The optimal backscattering coefficients and polarimetric parameters to characterize the soil moisture were determined based on L-band Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR), C-band RADARSAT-2, and ground measurements composed of soil and vegetation parameters collected during SMAPVEX12. Linear and circular backscattering coefficients (\u03c30) and polarimetric parameters such as correlation coefficients (\u03c1HHVV) and phase difference (\u03c6HHVV) between HH and VV, pedestal height (PH), entropy (H), anisotropy (A), \u03b1 angle, surface (Ps), and double bounce (Pd) powers were used to develop the relationships with soil moisture. The analysis of these relationships shows that over the forested sites of SMAPVEX12: (a) at L-band several optimal backscattering coefficients and polarimetric parameters allow the monitoring of soil moisture, particularly the linear and circular \u03c30 (r = 0.60\u20130.96), Ps (r = 0.59\u20130.84), Pd (r = 0.60\u20130.82), \u03c1HHHV_30\u00b0, \u03c1VVHV_30\u00b0, \u03c6HHHV_30\u00b0 and \u03c6HHVV_30\u00b0 (r = 0.56\u20130.81). However, compared to the results obtained with \u03c30, there is no added value of the polarimetric parameters for soil moisture retrievals. (b) at C-band, only a few polarimetric parameters \u03c6HHHV, \u03c6VVHV, and \u03c6HHVV are correlated with soil moisture (r = ~0.90). They can contribute to soil moisture retrievals over forested sites when L-band data are not available.<\/jats:p>","DOI":"10.3390\/rs14215317","type":"journal-article","created":{"date-parts":[[2022,10,24]],"date-time":"2022-10-24T10:09:23Z","timestamp":1666606163000},"page":"5317","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Potential of L- and C- Bands Polarimetric SAR Data for Monitoring Soil Moisture over Forested Sites"],"prefix":"10.3390","volume":"14","author":[{"given":"Ramata","family":"Magagi","sequence":"first","affiliation":[{"name":"Centre d\u2019Applications et de Recherches en T\u00e9l\u00e9d\u00e9tection (CARTEL), Universit\u00e9 de Sherbrooke, 2500 Boul. de l\u2019Universit\u00e9, Sherbrooke, QC J1K2R1, Canada"}]},{"given":"Safa","family":"Jammali","sequence":"additional","affiliation":[{"name":"D\u00e9partement d\u2019Informatique, Universit\u00e9 de Sherbrooke, 2500 Boul. de l\u2019Universit\u00e9, Sherbrooke, QC J1K2R1, Canada"}]},{"given":"Kalifa","family":"Go\u00efta","sequence":"additional","affiliation":[{"name":"Centre d\u2019Applications et de Recherches en T\u00e9l\u00e9d\u00e9tection (CARTEL), Universit\u00e9 de Sherbrooke, 2500 Boul. de l\u2019Universit\u00e9, Sherbrooke, QC J1K2R1, Canada"}]},{"given":"Hongquan","family":"Wang","sequence":"additional","affiliation":[{"name":"Centre d\u2019Applications et de Recherches en T\u00e9l\u00e9d\u00e9tection (CARTEL), Universit\u00e9 de Sherbrooke, 2500 Boul. de l\u2019Universit\u00e9, Sherbrooke, QC J1K2R1, Canada"}]},{"given":"Andreas","family":"Colliander","sequence":"additional","affiliation":[{"name":"Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"470","DOI":"10.5589\/m03-073","article-title":"Case studies demonstrating the hydrological applications of C-band multipolarized and polarimetric SAR","volume":"30","author":"Sokol","year":"2004","journal-title":"Can. 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