Results 41 to 50 of about 206 (121)

Calculation of Differential Propagation Constant Determined by Plant Morphology Using Polarimetric Measurement

International Journal of Antennas and Propagation, Volume 2014, Issue 1, 2014., 2014
The morphology of vegetation greatly impacts propagation of polarized electromagnetic wave. In order to validate this phenomenon, the mathematical relation between the differential propagation constant of forest vegetation and of its polarized echo is quantitatively derived by using backscattering power profile.
Chufeng Hu, Nanjing Li, Panayiotis Frangos   +2 more
wiley   +1 more source

Improved Model-Based Forest Height Inversion Using Airborne L-Band Repeat-Pass Dual-Baseline Pol-InSAR Data

Remote Sensing, 2022
This paper proposes an improved model-based forest height inversion method for airborne L-band dual-baseline repeat-pass polarimetric synthetic aperture radar interferometry (PolInSAR) collections.
Qi Zhang, Scott Hensley, Ruiheng Zhang, Chang Liu, Linlin Ge   +4 more
doaj   +1 more source

Invariant Contrast Parameters of PolInSAR Homogenous RVoG Model [PDF]

IEEE Geoscience and Remote Sensing Letters, 2014
It has been shown that the Cramer-Rao bound (CRB) can be helpful to characterize vegetation and ground height estimations based on the homogenous random volume over ground (RVoG) model and polarimetric interferometric SAR techniques. However, this model is a function of 20 unknown parameters, which makes the performance analysis a tedious task. We show
Réfrégier, Philippe, Roueff, Antoine, Arnaubec, Aurélien, Dubois-Fernandez, Pascale   +3 more
openaire   +2 more sources

Phase Pattern Calibration for Interferometric Applications in Spaceborne SAR Systems

International Journal of Antennas and Propagation, Volume 2013, Issue 1, 2013., 2013
SAR is a widely used technique to acquire images for geoscience and earth observation applications. Active phased array antennas are commonly used in spaceborne SAR systems. For certain modes and applications, it is necessary to know the phase behavior of these phased array antennas.
Markus Bachmann, Marco Schwerdt, Gabriel Castellanos Alfonzo, Dirk Schrank, Ulrich Nickel   +4 more
wiley   +1 more source

Iterative PolInSAR Target Decomposition for Scattering Characterization and Building Detection

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
In densely rotated built-up areas, restricted by interactive and complex scatterings, most polarimetric synthetic aperture radar scattering analyses and unsupervised building detection algorithms have failed, especially under conditions of large radar ...
Di Zhuang, Lamei Zhang, Bin Zou
doaj   +1 more source

Evapotranspiration Performance of Vertical Indoor Greening—Influence of Indoor Climate Conditions on the Transpiration Performance of Tropical Ornamental Plants and Contribution of Greenings to Indoor Comfort in Offices

Indoor Air, Volume 2025, Issue 1, 2025.
In indoor offices, it is often difficult to ensure high air quality and thermal comfort. Common problems are low relative humidity and the need for cooling. Previous research has shown that indoor greening can contribute to keeping the relative humidity and temperature at an appropriate level.
Annette Bucher, Elias Wolfrath, Christian Weiglein, Michaela Reim, Stephan Weismann, Haradhan Kolya   +5 more
wiley   +1 more source

Scattering‐Based Model of the SAR Signatures of Complex Targets for Classification Applications

International Journal of Navigation and Observation, Volume 2008, Issue 1, 2008., 2008
The modeling of complex target response in SAR imagery is the main subject of this paper. The analysis of a large database of SAR images with polarimetric and interferometric capabilities is used to accurately establish how the different structural parts of targets interact with the incident signal.
Gerard Margarit, Jordi J. Mallorqui, Simon Watts   +2 more
wiley   +1 more source

The Dual-Band PolInSAR Method for Forest Parametrization

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016
There are basically two methods for retrieving the ground and the canopy height from interferometric synthetic aperture radar (InSAR) in forested areas. The first method is based on the difference between InSAR height estimations from dual-band (DB) systems, typically operating at X- and P-bands HH.
Gustavo Hiroshi Xavier Shiroma, Karlus Alexander Câmara de Macedo, Christian Wimmer, João R. Moreira, David Fernandes   +4 more
openaire   +1 more source

THE LOW BACKSCATTERING TARGETS CLASSIFICATION IN URBAN AREAS [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
The Polarimetric and Interferometric Synthetic Aperture Radar (POLINSAR) is widely used in urban area nowadays. Because of the physical and geometric sensitivity, the POLINSAR is suitable for the city classification, power-lines detection, building ...
L. Shi
doaj   +1 more source

Forest Height Inversion by Convolutional Neural Networks Based on L-Band PolInSAR Data Without Prior Knowledge Dependency

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Forest height is a key forest parameter which is of great significance for monitoring forest resources, calculating forest biomass, and observing the global carbon cycle.
Dandan Li, Hailiang Lu, Chao Li, Linda Mohaisen, Weipeng Jing   +4 more
doaj   +1 more source