Abstract
Multitemporal RADARSAT Synthetic Aperture Radar (SAR) imagery was evaluated for monitoring soil moisture during the Southern Great Plains 1997 Hydrology Experiment (SGP97). Over the 1-month experiment a total of 10 RADARSAT (C-band; 5.3GHz; HH polarized) acquisitions were obtained. After co-registration of the images, the dependence of the backscattering coeYcient (σ°) on incidence angle (θ) was evaluated. An angular correction scheme was applied to the data and the correlation of σ° values with volumetric soil moisture measurements was determined. A high positive correlation between the two was observed for wheat stubble fields, whereas no correlation could be observed for pasture ? elds. A change detection approach yielded a correlation of soil moisture changes to s� changes for wheat stubble ? elds, indicating the potential of this method for soil moisture monitoring.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1571-1583 |
| Number of pages | 13 |
| Journal | International Journal of Remote Sensing |
| Volume | 22 |
| Issue number | 8 |
| DOIs | |
| State | Published - Jan 1 2001 |
All Science Journal Classification (ASJC) codes
- General Earth and Planetary Sciences
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