Results 201 to 210 of about 20,366 (247)
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Studies of decorrelation in multi-temporal SAR imagery
1995 International Geoscience and Remote Sensing Symposium, IGARSS '95. Quantitative Remote Sensing for Science and Applications, 2002The temporal coherence of SAR images of forested and cultivated countryside in South East England has been studied using data from ERS-1. Data from the 3 day repeat cycle generally exhibits the highest coherence, and coherent signatures can be used to differentiate between cultivated and forested regions.
D.G. Corr, G.E. Keyte, S. Whitehouse
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Polinsar forestry applications improved by modeling height-dependent temporal decorrelation
2010 IEEE International Geoscience and Remote Sensing Symposium, 2010We model the temporal decorrelation in volumetric media imaged by a repeat-pass SAR interferometer by using a temporal correlation function that varies with depth. An expression of this function is proposed and based on the Brownian motion of the canopy and soil elements. The spatial and temporal correlation terms are merged in a single coherence model
M. Lavalle +3 more
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Consequences of interaural decorrelation of speech temporal fine structure
The Journal of the Acoustical Society of America, 2019The ability to understand a target speech signal against a background of interfering speech signals is typically improved when the interfering signals are spatially separated (spatial release from masking; SRM). Swaminathan et al. (2016) found a significant reduction in SRM when the temporal fine structure (TFS) across the left and right ears was ...
Lucas Baltzell +2 more
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Temporal decorrelation analysis at P band over tropical forest
2011 IEEE International Geoscience and Remote Sensing Symposium, 2011The TropiSAR campaign was conducted in French Guiana in the summer 2009 in the framework of the Phase A studies pertaining to the BIOMASS mission, one of the three for Earth Explorer candidates. Its main objectives were the evaluation of P-Band radar imaging over tropical forests for biomass and forest height estimation.
Sandrine Daniel +3 more
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Comparison of Seafloor Roughness and Scattered Acoustic Temporal Decorrelation
IEEE Journal of Oceanic Engineering, 2009Connecting changes in acoustic scattering from the seafloor with changes in seafloor topography is essential for modeling the time dependence of the scattering and the development of acoustics as a tool for the remote sensing of benthic activity. An equation is derived that links the decorrelation of scattered acoustic power with the decorrelation of ...
A.L. Gerig +3 more
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Anisotropy of Spatiotemporal Decorrelation in Electrohydrodynamic Turbulence
Physical Review Letters, 2011Nonlinear straining and random sweeping spatiotemporal decorrelation properties, originally introduced as the main processes for turbulent fluctuations decorrelation in usual fluid flows, have been observed experimentally in anisotropic electroconvective turbulence generated in a nematic liquid crystal under the action of an external oscillating ...
Carbone F +4 more
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Blind signal deconvolution by spatio-temporal decorrelation and demixing
Neural Networks for Signal Processing VII. Proceedings of the 1997 IEEE Signal Processing Society Workshop, 2002We present a simple efficient local unsupervised learning algorithm for online adaptive multichannel blind deconvolution and separation of i.i.d. sources. Under mild conditions, there exits a stable inverse system so that the source signals can be exactly recovered from their convolutive mixtures.
null Seungjin Choi, A. Cichocki
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Analyzing Decorrelation of Multi-temporal SAR Data on InSAR
2008 Congress on Image and Signal Processing, 2008Coherence is an important parameter, which appraises quality of topical interferometery fringe and reflects the volume scatter information in InSAR. So it is important for generation of DEM, classification of surface features, estimation of backscatter layers, and quality of differential interferometery processing.
Bingyuan Hao +3 more
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Temporal decorrelation of vegetation by environmental and seasonal effects
IGARSS 2000. IEEE 2000 International Geoscience and Remote Sensing Symposium. Taking the Pulse of the Planet: The Role of Remote Sensing in Managing the Environment. Proceedings (Cat. No.00CH37120), 2002The temporal decorrelation of forests in response to environmental and seasonal effects is computed using the Michigan fractal-based coherent scattering model. Frequencies ranging from P- through X-band are considered. Substantial decorrelation (/spl alpha/ 0.9).
K. Sarabandi, C.B. Wilsen
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Differential SAR Tomography Reconstruction Robust to Temporal Decorrelation Effects
IEEE Transactions on Geoscience and Remote Sensing, 2019Temporal decorrelation is one of the major problems in synthetic aperture radar (SAR) tomography (TomoSAR) of a natural environment that leads to blurring and spreading in focused image space. In the context of spatiotemporal focusing using the multi-temporal multi-baseline (MB) SAR data, a model-based differential TomoSAR is employed.
Hossein Aghababaee +2 more
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