Results 71 to 80 of about 1,235,553 (221)

Characterization of Mass Wasting Events on Lunar Maria Using Mini‐RF Radar Observations

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Evidence of mass wasting has been observed on the Moon since at least the Apollo era. Surface features indicative of mass wasting processes are traditionally characterized geomorphologically using visible images. In this study, we aim to better understand mass wasting features via their radar properties, which can provide insights into the ...
S. L. Pérez‐Cortés, A. M. Bramson, E. G. Rivera‐Valentín, C. A. Nypaver, G. W. Patterson, A. K. Virkki, P. A. Taylor, R. Melikyan   +7 more
wiley   +1 more source

SNR and Noise Variance Estimation in Polarimetric SAR Data [PDF]

, 2013
The problem of estimating the signal-to-noise ratio (SNR) of the cross-polarised channels and the noise variance in polarimetric synthetic aperture radar (SAR) data is dealt with.
Villano, Michelangelo, Papathanassiou, Konstantinos   +1 more
core  

Multidimensional Radar Waveforms: A New Paradigm for the Design and Operation of Highly Performant Spaceborne Synthetic Aperture Radar Systems [PDF]

, 2007
This paper introduces and analyses the innovative paradigm of multidimensional waveform encoding for spaceborne synthetic aperture radar (SAR). The combination of this technique with digital beamforming on receive enables a new class of highly ...
Alberto Moreira, Moreira, Alberto, Nicolas Gebert, Gebert, Nicolas, Krieger, Gerhard, Gerhard Krieger   +5 more
core   +1 more source

Interlinked Dynamics of Rice Cultivation Intensity and Ground Subsidence: Spatio‐Temporal Insights Into Water Resource Implications From Multi‐Year Spaceborne SAR Analysis

Water Resources Research, Volume 62, Issue 4, April 2026.
Abstract Sustainable rice cultivation is vital to meet global food demands, particularly in regions relying on groundwater for irrigation. Over‐pumping, however, can cause significant ground subsidence, threatening both infrastructure and agricultural sustainability.
Ya‐Lun S. Tsai, Xun‐Yan Liu
wiley   +1 more source

Spaceborne Bi- and Multistatic SAR: Potential and Challenges [PDF]

, 2006
Bi- and multistatic synthetic aperture radar (SAR) operates with distinct transmit and receive antennas that are mounted on separate platforms. Such a spatial separation has several operational advantages, which will increase the capability, reliability ...
Moreira, Alberto, Krieger, Gerhard
core   +1 more source

Analysis of Azimuthal Variations Using Multi-Aperture Polarimetric Entropy with Circular SAR Images

Remote Sensing, 2018
In conventional synthetic aperture radar (SAR), sensors with a fixed look angle are assumed, and the scattering properties are considered as invariant in the azimuth.
Feiteng Xue, Yun Lin, Wen Hong, Qiang Yin, Bingchen Zhang, Wenjie Shen, Yue Zhao   +6 more
doaj   +1 more source

High-resolution measurements of scattering in wheat canopies-implications for crop parameter retrieval [PDF]

, 2006
Polarimetric X- and C-band measurements by the University of Sheffield ground-based synthetic aperture radar(GB-SAR)indoor system provide three-dimensional images of the scattering processes in wheat canopies, at resolutions of around a wavelength (3–6 ...
Morrison, Keith, Cookmartin, Geoff, Brown, Sarah C. M., Quegan, Shaun, Bennett, John C.   +4 more
core   +1 more source

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

Polarimetric SAR Speckle Reduction Based on Bilateral Filtering

Leida xuebao, 2014
The priority during speckle reduction in Polarimetric Synthetic Aperture Radar (Pol-SAR) data is to maintain the polarization information. For this reason, it is undesirable to separate each element of polarimetric SAR.
Wang Shuang, Yu Jia-ping, Liu Kun, Hou Biao, Jiao Li-cheng   +4 more
doaj   +1 more source

Polarimetric Synthetic Aperture Radar, Principles and Application [PDF]

, 2021
Demonstrates the benefits of the usage of fully polarimetric synthetic aperture radar data in applications of Earth remote sensing, with educational and development purposes. Includes numerous up-to-date examples with real data from spaceborne platforms and possibility to use a software to support lecture practicals.
openaire   +1 more source