Results 51 to 60 of about 2,512 (168)

Backscatter signal model for Irkutsk Incoherent Scatter Radar

Solnechno-Zemnaya Fizika, 2018
The paper presents a backscatter signal model for Irkutsk Incoherent Scatter Radar (IISR) and proposes a technique for solving the inverse scattering problem to obtain plasma temperatures from IISR data. This solution is validated by setting up the direct scattering problem and simulating it using the Monte-Carlo method.
Tashlykov V.P., Medvedev A.V., Vasilyev R.V.   +2 more
openaire   +4 more sources

Characterizing Tidal Marsh Inundation with Synthetic Aperture Radar, Radiometric Modeling, and In Situ Water Level Observations

Remote Sensing
Tidal marshes play a globally critical role in carbon and hydrologic cycles by sequestering carbon dioxide from the atmosphere and exporting dissolved organic carbon to connected estuaries.
Brian T. Lamb, Kyle C. McDonald, Maria A. Tzortziou, Derek S. Tesser   +3 more
doaj   +1 more source

UAV-Borne Profiling Radar for Forest Research

Remote Sensing, 2017
Microwave Radar is an attractive solution for forest mapping and inventories because microwave signals penetrates into the forest canopy and the backscattering signal can provide information regarding the whole forest structure.
Yuwei Chen, Teemu Hakala, Mika Karjalainen, Ziyi Feng, Jian Tang, Paula Litkey, Antero Kukko, Anttoni Jaakkola, Juha Hyyppä   +8 more
doaj   +1 more source

Estimating Stem Water Content From Tower-Based L-Band Tomographic Radar Using a Single-Scattering Model of a Uniform Layer: A First in Situ Experiment

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Spaceborne synthetic aperture radar missions have the potential to estimate forest vegetation water content (VWC), but understanding the underlying scattering processes and their link to VWC is still limited.
Theresa Leistner, Albert R. Monteith, Jose Gutierrez Lopez, Lars M. H. Ulander   +3 more
doaj   +1 more source

Soil moisture estimation underneath crop cover using high incidence angle C-band Sentinel-1 SAR data

Kuwait Journal of Science
SAR's return signal sensitivity to dielectric constant and penetration through vegetation makes it ideal for large-scale soil moisture studies. High incidence angle SAR data is especially useful for understanding crop characteristics.
Hari Shanker Srivastava, Thota Sivasankar, Madhuri Dilip Gavali, Parul Patel   +3 more
doaj   +1 more source

Radar backscatter and forest biomass [PDF]

Nature Climate Change, 2012
S. Englhart, V. Keuck, F. Siegert
openaire   +1 more source

Glacier melt detection at different sites of Greenland ice sheet using dual-polarized Sentinel-1 images

Geo-spatial Information Science
Synectic Aperture Radar (SAR) backscatter coefficient is sensitive to glacier surface physical characteristic changes, including the states of melting and refreezing, but it is also sensitive to incidence angle variation.
Gang Li, Xiao Chen, Hui Lin, Andrew Hooper, Zhuoqi Chen, Xiao Cheng   +5 more
doaj   +1 more source

A Two-Stream LSTM-Based Backscattering Model at L-Band and S- Band for Dry Soil Surfaces Under Large Roughness Conditions

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
In this article, we report for the first time two radar measurements (Ji Mo 2008 and Min Qin 2009) on natural soil surfaces under large roughness, which were conducted by the China Research Institute of Radiowave Propagation.
Dong Zhu, Peng Zhao, Qiang Zhao, Qing-Liang Li, Yu-Shi Zhang, Li-Xia Yang   +5 more
doaj   +1 more source

A Consistent Treatment of Microwave Emissivity and Radar Backscatter for Retrieval of Precipitation over Water Surfaces. [PDF]

J Atmos Ocean Technol, 2016
Munchak SJ, Meneghini R, Grecu M, Olson WS.   +3 more
europepmc   +1 more source

Enhanced Radar Backscatter from the Ionosphere

, 2013
Incoherent scatter radars are powerful ground based instruments for ionospheric measurements. By analysis of the Doppler shifted backscatter spectrum, containing the signature of electrostatic plasma waves, plasma bulk properties are estimated. Occasionally, the backscattered radar power is enhanced several orders of magnitude above the thermal ...
openaire   +1 more source