Title :
Comparison of multifrequency truck radar and SIR-C backscatter for soil-moisture estimation in Washita ´94
Author :
O´Neill, P.E. ; Petrella, J.J. ; Hsu, A.Y.
Author_Institution :
Hydrological Sci. Branch, NASA Goddard Space Flight Center, Greenbelt, MD, USA
Abstract :
During the first SIR-C mission in April, 1994, a three-frequency truck-mounted radar system was used to obtain radar backscatter data coincident with the AIRSAR and SIR-C radars for representative test fields in the Little Washita River watershed near Chickasha, Oklahoma, one of the designated hydrology supersites for the SIR-C experiment. Analysis of the resulting radar data sets indicates that (1) despite windy ground conditions, the truck radar operated in a very stable manner, producing accurate and repeatable measurements at both like and cross polarizations; and (2) both the Shuttle and truck radars were able to follow changing soil moisture conditions in most of the test fields quite well
Keywords :
backscatter; geophysical techniques; hydrological techniques; moisture measurement; radar applications; radar cross-sections; radar polarimetry; remote sensing; remote sensing by radar; soil; spaceborne radar; AD 1994; Chickasha Oklahoma; Little Washita River watershed n; SIR; SIR-C; Shuttle; USA; United States; Washita ´94; backscatter; ground truth; hydrology; measurement technique; multifrequency truck radar; polarization; radar polarimetry; radar remote sensing; radar scattering; soil moisture; spaceborne radar; water content; Backscatter; Hydrologic measurements; Hydrology; Moisture measurement; Polarization; Radar measurements; Rivers; Soil measurements; Soil moisture; System testing;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1995. IGARSS '95. 'Quantitative Remote Sensing for Science and Applications', International
Conference_Location :
Firenze
Print_ISBN :
0-7803-2567-2
DOI :
10.1109/IGARSS.1995.520283
