Results 1 to 10 of about 946 (177)
Soil Moisture Active Passive (SMAP) Satellite Data and Unsaturated Soil Response [PDF]
E3S Web of Conferences, 2023 The importance of degree of soil saturation in geotechnical problems resulted in inclusion of unsaturated soil mechanics in various applications for several decades.
Farahani Ali +2 more
doaj +2 more sources
The Soil Moisture Active Passive (SMAP) Mission [PDF]
Proceedings of the IEEE, 2010 The Soil Moisture Active Passive (SMAP) mission is one of the first Earth observation satellites being developed by NASA in response to the National Research Council's Decadal Survey. SMAP will make global measurements of the soil moisture present at the Earth's land surface and will distinguish frozen from thawed land surfaces.
Mahta Moghaddam +2 more
exaly +4 more sources
Integration of Sentinel-1A Radar and SMAP Radiometer for Soil Moisture Retrieval over Vegetated Areas [PDF]
SensorsNASA’s Soil Moisture Active Passive (SMAP) was originally designed to combine high-resolution active (radar) and coarse-resolution but highly sensitive passive (radiometer) L-band observations to achieve unprecedented spatial resolution and accuracy for ...
Saeed Arab, Greg Easson, Zahra Ghaffari
doaj +2 more sources
The Soil Moisture Active Passive Experiments: Validation of the SMAP Products in Australia
IEEE Transactions on Geoscience and Remote Sensing, 2021 The fourth and fifth Soil Moisture Active Passive Experiments (SMAPEx-4 and -5) were conducted at the beginning of the SMAP operational phase, May and September 2015, to: 1) evaluate the SMAP microwave observations and derived soil moisture (SM) products and 2) intercompare with the Soil Moisture and Ocean Salinity (SMOS) and Aquarius missions over the
Thomas Jackson +2 more
exaly +5 more sources
Application of Soil Moisture Active Passive (SMAP) Satellite Data in Seismic Response Assessment
Remote Sensing, 2022 The proven relationship between soil moisture and seismic ground response highlights the need for a tool to track the Earth’s surface soil moisture before and after seismic events.
Ali Farahani +3 more
doaj +3 more sources
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 National Aeronautics and Space Administration's soil moisture active–passive (SMAP) mission potential to produce high-resolution soil moisture suffered adversely due to its L-band synthetic-aperture radar (SAR) failure.
Gurjeet Singh +5 more
doaj +1 more source
Global Evaluation of SMAP/Sentinel-1 Soil Moisture Products
Remote Sensing, 2022 SMAP/Sentinel-1 soil moisture is the latest SMAP (Soil Moisture Active Passive) product derived from synergistic utilization of the radiometry observations of SMAP and radar backscattering data of Sentinel-1.
Farzane Mohseni +4 more
doaj +1 more source
HIGH-RESOLUTION ENHANCED PRODUCT BASED ON SMAP ACTIVE-PASSIVE APPROACH USING SENTINEL 1A AND 1B SAR DATA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 SMAP project released a new enhanced high-resolution (3km) soil moisture active-passive product. This product is obtained by combining the SMAP radiometer data and the Sentinel-1A and -1B Synthetic Aperture Radar (SAR) data.
N. N. Das +9 more
doaj +1 more source
Validation of SMOS, SMAP, and ESA CCI Soil Moisture Over a Humid Region
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 With recent advances in satellite microwave soil moisture estimation, there is a demand for up-to-date validation of satellite soil moisture products. This article presents a sparse network validation over a humid region within the Laurentian Great Lakes
Xiaoyong Xu, Steven Frey
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The Soil Moisture Active and Passive Mission (SMAP): Science and applications [PDF]
2009 IEEE Radar Conference, 2009 The Soil Moisture Active and Passive mission (SMAP) will provide global maps of soil moisture content and surface freeze/thaw state. Global measurements of these variables are critical for terrestrial water and carbon cycle applications. The SMAP observatory consists of two multipolarization L-band sensors, a radar and radiometer, that share a ...
Entekhabi, Dara +2 more
openaire +3 more sources