Results 31 to 40 of about 134 (95)

A Novel Four-Stage Method for Vegetation Height Estimation with Repeat-Pass PolInSAR Data via Temporal Decorrelation Adaptive Estimation and Distance Transformation

Remote Sensing, 2021
Vegetation height estimation plays a pivotal role in forest mapping, which significantly promotes the study of environment and climate. This paper develops a general forest structure model for vegetation height estimation using polarimetric ...
Cheng Xing, Tao Zhang, Hongmiao Wang, Liang Zeng, Junjun Yin, Jian Yang   +5 more
doaj   +1 more source

Sub-Canopy Topography Inversion Using Multi-Baseline Bistatic InSAR Without External Vegetation-Related Data

Remote Sensing
Previous studies on single-polarized InSAR-based sub-canopy topography inversion have mainly relied on simplified or empirical models that only consider the volume scattering process. In a boreal forest area, the canopy layer is often discontinuous.
Huiqiang Wang, Zhimin Feng, Ruiping Li, Yanan Yu   +3 more
doaj   +1 more source

Model-Based Biomass Estimation of a Hemi-Boreal Forest from Multitemporal TanDEM-X Acquisitions

Remote Sensing, 2013
Above-ground forest biomass is a significant variable in the terrestrial carbon budget, but is still estimated with relatively large uncertainty. Remote sensing methods can improve the characterization of the spatial distribution and estimation accuracy ...
Maciej J. Soja, Jan I.H. Askne, Maurizio Santoro, Johan E.S. Fransson, Lars M.H. Ulander   +4 more
doaj   +1 more source

A HYBRID METHOD IN VEGETATION HEIGHT ESTIMATION USING POLINSAR IMAGES OF CAMPAIGN BIOSAR [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
Recently, there have been plenty of researches on the retrieval of forest height by PolInSAR data. This paper aims at the evaluation of a hybrid method in vegetation height estimation based on L-band multi-polarized air-borne SAR images.
S. Dehnavi, Y. Maghsoudi
doaj   +1 more source

Use of TanDEM-X PolInSAR for canopy height retrieval over tropical forests in the Western Ghats, India

Frontiers in Forests and Global Change, 2022
Canopy height is a critical parameter in quantifying the vertical structure of forests. Polarimetric SAR Interferometry (PolInSAR) is a radar remote sensing technique that makes use of polarimetric separation of scattering phase centers obtained from ...
Suchithra Raveendrakumar, Unmesh Khati, Mohamed Musthafa, Gulab Singh, Stefano Tebaldini   +4 more
doaj   +1 more source

Investigation C- and L-Band Spaceborne Synthetic Aperture Radar Scattering on Oil Palm Phenology

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Monitoring of oil palm plantations is important for supporting sustainable management and improving productivity. This study to investigates the scattering characteristics of oil palm plantations at various phenological phases using dual-polarized ...
Rika Hernawati, Josaphat Tetuko Sri Sumantyo, Soni Darmawan, Ketut Wikantika, Agung Budi Harto   +4 more
doaj   +1 more source

Improved Three-stage Algorithm of Forest Height Retrieval with PolInSAR

Leida xuebao, 2014
Employing Polarimetric Interferometry Synthetic Aperture Radar (PolInSAR) data to inverse forest parameters is a hot topic in the research field of PolInSAR. The typical forest parameter inversion algorithm is the three-stage inversion algorithm based on
Xu Li-ying, Li Shi-qiang, Deng Yun-kai, Wang Yu   +3 more
doaj   +1 more source

Sparse vegetation height estimation based on non‐local sample selection with generalised inner product

IET Radar, Sonar & Navigation
With the assumption of densely distributed vegetation in PolInSAR processing, the height parameters can be inversed by the conventional random volume over ground (RVoG) method.
Jing Xu, Long Cheng, Chao Xue, Zhiyong Suo   +3 more
doaj   +1 more source

PG-GVB: A prior constrained backscatter framework for P-band PolInSAR forest height inversion

International Journal of Applied Earth Observations and Geoinformation
Facilitated by the BIOMASS mission, P-band polarimetric SAR interferometry (PolInSAR) provides a key capability for large-scale forest height mapping and biomass estimation.
Lei Wang, Linping Yang, Gaoyun Shen, Junyi Liu, Junnan Xiong, Lin Fu, Li Zeng, Bing Yu, Chongchong Ye   +8 more
doaj   +1 more source

P-Band PolInSAR Sub-Canopy Terrain Retrieval in Tropical Forests Using Forest Height-to-Unpenetrated Depth Mapping

Remote Sensing
For tropical forests characterized by tall and densely packed trees, even long-wavelength SAR signals may fail to achieve full penetration, posing a significant challenge for retrieving sub-canopy terrain using polarimetric interferometric SAR (InSAR ...
Chuanjun Wu, Jiali Hou, Peng Shen, Sai Wang, Gang Chen, Lu Zhang   +5 more
doaj   +1 more source