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The sensitivity of ground-reflected GNSS signals to near-surface soil moisture, as recorded by spaceborne receivers

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dc.contributor.author Chew, C.
dc.contributor.author Colliander, A.
dc.contributor.author Shah, R.
dc.contributor.author Zuffada, C.
dc.contributor.author Burgin, M.
dc.date.accessioned 2019-07-02T19:30:18Z
dc.date.available 2019-07-02T19:30:18Z
dc.date.issued 2017-07-23
dc.identifier.citation IGARSS 2017, Fort Worth, Texas. July 23-28, 2017 en_US
dc.identifier.clearanceno CL#17-2421
dc.identifier.uri http://hdl.handle.net/2014/46401
dc.description.abstract Spatial and temporal variations in near-surface soil moisture are important to measure for climate studies, numerical weather forecasts, and drought monitoring. Several previous studies have shown success in using ground-reflected Global Navigation Satellite System (GNSS) signals as a form of bistatic radar to sense soil moisture. However, the ability of this type of data to sense soil moisture variations from space is still a nascent field of study. In the past two years, three satellites have been launched that were either designed to capture ground-reflected GNSS signals or have been modified to record these signals. The data provided by these satellites are giving scientists an unprecedented opportunity to investigate their ability to detect changes in Earth’s land surface, including but certainly not limited to near-surface soil moisture. This paper will present spaceborne observations of ground-reflected GNSS signals and evaluate their sensitivity to near-surface soil moisture. This sensitivity will be compared to empirical and theoretical sensitivities of monostatic L-band radar measurements to soil moisture. We will also comment on possibilities for retrieval algorithm development, using techniques employed for monostatic radar as a guide. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2017 en_US
dc.title The sensitivity of ground-reflected GNSS signals to near-surface soil moisture, as recorded by spaceborne receivers en_US
dc.type Preprint en_US


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