Results 11 to 20 of about 1,110 (203)

Radio-frequency interference (RFI) mitigation for the soil moisture active/passive (SMAP) radiometer [PDF]

2010 IEEE International Geoscience and Remote Sensing Symposium, 2010
The presence of anthropogenic RFI is expected to adversely impact soil moisture measurement by NASA's Soil Moisture Active Passive mission. The digital signal processing approach and preliminary design for detecting and mitigating this RFI is presented in this paper. This approach is largely based upon the work of Johnson [1] and Ruf [2].
Damon Bradley, Cliff Brambora, Mark Wong, Lynn Miles, David R. Durachka, Brian W. Farmer, Priscilla N. Mohammed, Jeff Piepmier, Jim Medeiros, Neil Martin, Rafael A. García   +10 more
openalex   +2 more sources

Validation of the Soil Moisture Active Passive (SMAP) satellite soil moisture retrieval in an Arctic tundra environment [PDF]

Geophysical Research Letters, 2017
AbstractThis study examines the Soil Moisture Active Passive soil moisture product on the Equal Area Scalable Earth‐2 (EASE‐2) 36 km Global cylindrical and North Polar azimuthal grids relative to two in situ soil moisture monitoring networks that were installed in 2015 and 2016.
Elizabeth Wrona, Tracy Rowlandson, Manoj Nambiar, Aaron Berg, Andreas Colliander, Philip Marsh   +5 more
openalex   +2 more sources

Quantifying the potential of using Soil Moisture Active Passive (SMAP) soil moisture variability to predict subsurface water dynamics [PDF]

Hydrology and Earth System Sciences
Abstract. Advances in satellite Earth observation have opened up new opportunities for global monitoring of soil moisture (SM) at fine to medium resolution, but satellite remote sensing can only measure the near-surface soil moisture (SSM). As such, it is critically important to examine the potential of satellite SSM measurements to derive the water ...
Aruna Kumar Nayak, Xiaoyong Xu, Steven K. Frey, Omar Khader, Andre R. Erler, David R. Lapen, H A J Russell, Edward A. Sudicky   +7 more
openalex   +4 more sources

Soil Moisture Active/Passive (SMAP) L-Band Microwave Radiometer Post-Launch Calibration Upgrade [PDF]

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2019
The Soil Moisture Active/Passive (SMAP) microwave radiometer is a fully polarimetric L-band radiometer flown on the SMAP satellite in a 6 AM/6 PM sun-synchronous orbit at 685 km altitude. After the SMAP L1B_TB data product version 3 was released in 2016, the radiometer has been undergoing further calibration and validation with the goal of reducing ...
Jinzheng Peng, Sidharth Misra, Jeffrey R. Piepmeier, Emmanuel P. Dinnat, Simon Yueh, Thomas Meißner, David M. Le Vine, K. Shelton, A. P. Freedman, R. S. Dunbar, S. Chan, Rajat Bindlish, Giovanni De Amici, Priscilla N. Mohammed, Liang Hong, Derek Hudson, Thomas J. Jackson   +16 more
openalex   +2 more sources

The SMAP and Copernicus Sentinel 1A/B microwave active-passive high resolution surface soil moisture product

Remote Sensing of Environment, 2019
Narendra N Das, Dara Entekhabi, Andreas Colliander   +2 more
exaly   +3 more sources

Retrieving landscape freeze/thaw state from Soil Moisture Active Passive (SMAP) radar and radiometer measurements

Remote Sensing of Environment, 2017
Chris Derksen, Xiaolan Xu, Andreas Colliander   +2 more
exaly   +2 more sources

Soil Moisture Retrieval Using SMAP L-Band Radiometer and RISAT-1 C-Band SAR Data in the Paddy Dominated Tropical Region of India

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, Narendra Das, Rabindra Panda, Binayak Mohanty, Dara Entekhabi, Bimal Bhattacharya   +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, S. Mohammad Mirmazloumi, Mehdi Mokhtarzade, Sadegh Jamali, Saeid Homayouni   +4 more
doaj   +1 more source

Global-scale assessment and combination of SMAP with ASCAT (active) and AMSR2 (passive) soil moisture products

Remote Sensing of Environment, 2018
Hyunglok Kim, Robert M Parinussa, Alexandra G Könings   +2 more
exaly   +3 more sources

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, D. Entekhabi, S. Kim, T. Jagdhuber, S. Dunbar, S. Yueh, P. E. O’Neill, A. Colliander, J. Walker, T. J. Jackson   +9 more
doaj   +1 more source