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Talk Abstract
Retrieval of Ocean and Land Surface Characteristics Using Measurements of Reflected GPS Signals

Penina Axelrad
Associate Professor
Aerospace Engineering Sciences
Colorado Center for Astrodynamics Research
University of Colorado, CB 431
Boulder, CO 80309

In the last few years, researchers have started investigating the use of GPS in a bi-static radar configuration as a means to study the Earth surface. Transmissions from the GPS satellites provide numerous signals of opportunity that are reflected by the Earth surface and may be acquired by an airborne or spaceborne antenna and receiver. The properties of the reflected signal depend on the surface characteristics which in turn are sensitive to important physical parameters such as ocean surface winds, salinity, soil moisture, etc. There are considerable challenges in exploiting these signals for remote sensing applications. My talk will describe the overall concept and highlight a number of mathematical and computational issues that we are currently facing.


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