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The impact of terrain correction of polarimetric SAR data on glacier change detection

Vahid Akbari, Yngvar Larsen, Anthony P. Doulgeris, Torbjorn Eltoft
2012 2012 IEEE International Geoscience and Remote Sensing Symposium  
We firstly assess the effects of topography on radar brightness and show how we can produce the radiometrically terrain corrected multilook complex (MLC) covariance data.  ...  This paper investigates the impact of terrain correction on change detection results.  ...  TERRAIN CORRECTION Terrain topography influences both the position of each given point on the Earth's surface and the brightness of the radar return in radar geometry [4, 5] .  ... 
doi:10.1109/igarss.2012.6352456 dblp:conf/igarss/AkbariLDE12 fatcat:7lms4aqqnzdrfatgoy5lsz44yq

Scale-Dependent Surface Roughness Behavior and Its Impact on Empirical Models for Radar Backscatter

B.A. Campbell
2009 IEEE Transactions on Geoscience and Remote Sensing  
This paper addresses empirical approaches used to estimate terrain properties from radar data over a wider range of roughness than permitted by analytical models.  ...  , and, when used in an empirical model, avoids the need for arbitrary wavelength-dependent terms.  ...  A complete set of empirical backscatter models is developed here from the Kilauea topography data and the AIRSAR 24-cm radar echoes.  ... 
doi:10.1109/tgrs.2009.2022752 fatcat:m6vcgdaakvbifgnubupjf7m3wm

Self-affine subglacial roughness: consequences for radar scattering and basal water discrimination in northern Greenland

Thomas M. Jordan, Michael A. Cooper, Dustin M. Schroeder, Christopher N. Williams, John D. Paden, Martin J. Siegert, Jonathan L. Bamber
2017 The Cryosphere  
Past studies have demonstrated that subglacial terrain exhibits self-affine (power law) roughness scaling behaviour, but existing radar scattering models do not take this into account.  ...  </strong> Subglacial roughness can be determined at a variety of length scales from radio-echo sounding (RES) data either via statistical analysis of topography or inferred from basal radar scattering.  ...  The radar scattering model is then used to quantify self-affine topographic control upon radar scattering, via the Hurst exponent (Sect. 5.2).  ... 
doi:10.5194/tc-11-1247-2017 fatcat:es6kjrxm7ndmzlaecbqyn7wnpu

The Effect of Topography on Target Decomposition of Polarimetric SAR Data

Sang-Eun Park
2015 Remote Sensing  
In this study, the effect of ground topography on the model-fitting-based polarimetric decomposition techniques is investigated.  ...  Polarimetric target decomposition enables the interpretation of radar images more easily, mostly based on physical assumptions, i.e., fitting physically-based scattering models to the polarimetric SAR  ...  Topography Effects on Model-Fitting-Based Decomposition Changes of Scattering Mechanisms in Sloping Terrain The simulation of the coherency matrix is carried out for variations of range and azimuth slopes  ... 
doi:10.3390/rs70504997 fatcat:vvkx2jwmwzgl3nxia3sdikyes4

Self-affine subglacial roughness: consequences for radar scattering and basal thaw discrimination in northern Greenland

Thomas M. Jordan, Michael A. Cooper, Dustin M. Schroeder, Christopher N. Williams, John D. Paden, Martin J. Siegert, Jonathan L. Bamber
2017 The Cryosphere Discussions  
A radar scattering model then enables us to explain how the Hurst exponent exerts strong topographic control upon radar scattering, which we map using the waveform abruptness (pulse peakiness) parameter  ...  Subglacial roughness can be determined at variety of length scales from radio-echo sounding (RES) data; either via statistical analysis of along-track topography, or inferred from basal radar scattering  ...  We then demonstrated a general agreement between the predictions of the radar scattering model and the observed relationship between the Hurst exponent 640 and waveform abruptness.  ... 
doi:10.5194/tc-2016-283 fatcat:vgyb3upjhvf5nib3m5w7g4idou

A Novel Topography Retrieval Algorithm Based on Single-Pass Polarimetric SAR Data and Terrain Dependent Error Analysis

Congrui Yang, Fengjun Zhao, Chunle Wang, Mengmeng Wang, Xiuqing Liu, Robert Wang
2022 Remote Sensing  
In addition, an in-depth analysis of non-linear and terrain-dependent errors is performed.  ...  This article proposes a novel topography retrieval algorithm based on the Lambertian backscatter model that further improves the vertical precision of digital elevation model (DEM) generation and requires  ...  The authors would also like to thank all colleagues who participated in this experiment. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs14133176 fatcat:tdywfoj6yzbtliqhnx4oxjlhnm

A review of underlying topography estimation over forest areas by InSAR: Theory, advances, challenges and perspectives

Yan-zhou Xie, Jian-jun Zhu, Hai-qiang Fu, Chang-cheng Wang
2020 Journal of Central South University  
In this paper, firstly, the main principle of digital elevation model (DEM) generation by InSAR and SAR data acquisition over forest area are introduced.  ...  Finally, four aspects of challenge are highlighted, including SAR data acquisition, error compensation and correction, scattering model reconstruction and solution strategy of multi-source data, which  ...  Despite the tremendous progress in underlying topography retrieval witnessed over past decades, the operational underlying topography mapping technique, generally, is still in the testing stage where experiments  ... 
doi:10.1007/s11771-020-4348-4 fatcat:rf4qbqtzrbdrthim6xvhvox7vy

Algorithm of Interferometric Coherence Estimation for Synthetic Aperture Radar Image Pair

Andrey Sosnovsky, Victor Kobernichenko
2015 International Joint Conference on the Analysis of Images, Social Networks and Texts  
The problem in coherence estimation is in its dependence on phase slope caused by relief topography (topographic phase).  ...  Interferometric coherence is an important indicator of reliability for interferograms obtained by interferometric synthetic aperture radar (Interferometric SAR, InSAR).  ...  problem, i.e. generation of digital elevation model or terrain changes map.  ... 
dblp:conf/aist/SosnovskyK15 fatcat:csue3eyvivfddc5xl74jsxmo5y

Topography data harmonisation and uncertainties applying SRTM, laser scanner and cartographic elevation models

D. Haase, K. Frotscher
2005 Advances in Geosciences  
SRTM digital height models are generated by Synthetic Aperture Radar (SAR) and show a high spatial variance in urban areas, regions of dense vegetation canopy, floodplains and water bodies.  ...  In the analysis different types of digital elevation models (DEM), terrain models (DTM) and land cover classification data (biotope map, Corine Land Cover 1994) have been used.  ...  The Shuttle Radar Topography Mission obtained elevation data (surface models) on a near-global scale to generate the most complete high-resolution digital topographical database of Earth so far.  ... 
doi:10.5194/adgeo-5-65-2005 fatcat:do57lgsnkjdlzdq3bcdkknn2ga

Quantitative roughness characterization of geological surfaces and implications for radar signature analysis

W. Dierking
1999 IEEE Transactions on Geoscience and Remote Sensing  
From 1993 to 1995, he was with the Remote Sensing Group at Chalmers University of Technology, Goteborg, Sweden, where he was involved in the experimental and theoretical research of sea ice radar signatures  ...  where he worked on microwave remote sensing of snow and ice and on measurements of the sea ice surface topography by means of laser altimetry.  ...  Surface Scatter Modeling (Conventional Approach) The numerical simulations of interactions between radar waves and geological terrain now presented focus on the scattering at the terrain surface, and any  ... 
doi:10.1109/36.789638 fatcat:7ppadswo35gtzcvr6thno7eo4u

Integration of Satellite Imagery, Geology and Geophysical Data [chapter]

Andreas Laake
2011 Earth and Environmental Sciences  
Radar based satellite gravity data are provided by the University of California, La Jolla Satellite.  ...  491 Acknowledgements The author thanks ADNOC, Anadarko, Apache Oil Egypt, Bahrain Oil Company, Dara Petroleum Company, Egypt General Petroleum Corporation, Gaz de France, Kuwait Ministry of Oil, Kuwait  ...  Microwave radar distance measurements can be converted into surface topography maps or digital elevation models.  ... 
doi:10.5772/27613 fatcat:2ft2l6ydsbdchk6gkzuuk2hwjm

L-band InSAR decorrelation analysis in volcanic terrains using airborne LiDAR data and in situ measurements: The case of the Piton de la Fournaise volcano, France

Melanie Sedze, Essam Heggy, Frederic Bretar, Daniel Berveiller, Stephane Jacquemoud
2012 2012 IEEE International Geoscience and Remote Sensing Symposium  
The high resolution DTM generated using LiDAR data is used to subtract out the topographic contribution from the interferogram and to improve the radar coherence maps.  ...  Coherence deteriorates over pyroclastic deposits and rough lava flows due to volume and surface scattering.  ...  This model is based on the radar equation (Eq. 1) [5] .  ... 
doi:10.1109/igarss.2012.6350558 dblp:conf/igarss/SedzeHBBJ12 fatcat:tc2a66b2szearayk3zdwiyzgoa

Monitoring Glacier Changes Using Multitemporal Multipolarization SAR Images

Vahid Akbari, Anthony P. Doulgeris, Torbjorn Eltoft
2014 IEEE Transactions on Geoscience and Remote Sensing  
Index Terms-Polarimetric synthetic aperture radar (Pol-SAR); radiometric terrain correction; matrix log-cumulant diagram; multilook product model; unsupervised contextual non-Gaussian segmentation; post-classification  ...  We produce terrain corrected multilook complex (MLC) covariance data by including the effects of topography on both geolocation and SAR radiometry as well as azimuth slope variations on polarization signature  ...  software, Norwegian Polar Institute for DEM and GPR profiles, the Norwegian Meteorological Institute for the meteorological observations, and the anonymous reviewers for their suggestions that have helped in  ... 
doi:10.1109/tgrs.2013.2275203 fatcat:xwencfuh2nbadc3ck6cz22x62y

Forest height estimation from mountain forest areas using general model–based decomposition for polarimetric interferometric synthetic aperture radar images

Nghia Pham Minh, Bin Zou, Hongjun Cai, Chengyi Wang
2014 Journal of Applied Remote Sensing  
In addition, general double-and single-bounce scattering models are proposed to fit for the cross-polarization and off-diagonal term by separating their independent orientation angle, which remains unachieved  ...  For mountain forest areas, scattering mechanisms are strongly affected by the ground topography variations.  ...  In order to overcome these limitations, general double-and single-bounce scattering models will be proposed by separating their independent orientation angles.  ... 
doi:10.1117/1.jrs.8.083676 fatcat:dg5vhdchc5el7fqh5k4yu6kiq4

Lava flow surface roughness and depolarized radar scattering

Bruce A. Campbell, Michael K. Shepard
1996 Journal of Geophysical Research  
point, where the surface appears entirely diffusely scattering to the radar.  ...  Surface roughness has a strong controlling influence on radar scattering and other types of remote sensing observations.  ...  Smith for invaluable help in collecting the field topography data. Helpful reviews by J. Plaut and H. Zebker were also appreciated.  ... 
doi:10.1029/95je01804 fatcat:q3f5svwjezb27mzel5z7ywssqa
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