| タイトル | Aircraft active microwave measurements for estimating soil moisture |
| 著者（英） | Schmugge, T. J.; Jackson, T. J.; Chang, A. |
| 著者所属（英） | NASA Goddard Space Flight Center|Science and Education Administration |
| 発行日 | 1981-06-01 |
| 言語 | eng |
| 内容記述 | Both active and passive microwave sensors are sensitive to variations in near-surface soil moisture. The principal advantage of active microwave systems for soil moisture applications is that high spatial resolution can be retained even at satellite attitudes. The considered investigation is concerned with the use of active microwave scatterometers for estimating near-surface soil moisture. Microwave scatterometer data were obtained during a series of three aircraft flights over a group of Oklahoma research watersheds during May 1978. Data were obtained for the C, L, and P bands at angles of incidence between 5 and 50 degrees. The best results were obtained using C band data at incidence angles of 10 and 15 degrees and soil moisture depth of 0 to 15 cm. These results were in excellent agreement with the conclusions of the truck-mounted scatterometer measurement program reported by Ulaby et al. (1978, 1979). |
| NASA分類 | EARTH RESOURCES AND REMOTE SENSING |
| レポートNO | 81A43547 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/415620 |
