Title :
GPS sounding of ocean surface waves: theoretical assessment
Author :
Clifford, Steven F. ; Tatarskii, Valerian I. ; Voronovich, Alexander G. ; Zavorotny, Valery U.
Author_Institution :
Environ. Technol. Lab., NOAA, Boulder, CO, USA
Abstract :
The theoretical analysis of a Global Positioning System (GPS) signal scattering from an ocean surface is presented. The power level of the scattered signal as a function of the time delay, an elevation angle of the GPS satellite, the height of the receiver and surface wind conditions are studied. Conditions are found at which calculated curves show a sensitivity of their parameters to the statistics of slopes, and therefore, to the wind velocity. The developed approach is used to analyze various statistical characteristics of the scattered GPS signals that can potentially be used for prospective remote sensing techniques of land and ocean surface characteristics
Keywords :
electromagnetic wave scattering; ocean waves; radiowave propagation; remote sensing; GPS sounding; Global Positioning System signal scattering; elevation angle; ocean surface waves; parameter sensitivity; power level; remote sensing techniques; statistical characteristics; surface wind conditions; theoretical analysis; time delay; wind velocity; Acoustic scattering; Delay effects; Global Positioning System; Oceans; Satellites; Sea surface; Signal analysis; Statistics; Surface waves; Wind speed;
Conference_Titel :
Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4403-0
DOI :
10.1109/IGARSS.1998.703722
