Results 51 to 60 of about 63,432 (250)

Slow Deformation Time-Series Monitoring for Urban Areas Based on the AWHPSPO Algorithm and TELM: A Case Study of Changsha, China

Remote Sensing, 2023
Health monitoring is important for densely distributed urban infrastructures, particularly in cities undergoing rapid economic progress. Permanent scatterer interferometry (PSI) is an advanced remote sensing observation technique that is commonly used in
Xuemin Xing, Jihang Zhang, Jun Zhu, Rui Zhang, Bin Liu   +4 more
doaj   +1 more source

Mapping oil palm plantations and their implications on forest and great ape habitat loss in Central Africa

Remote Sensing in Ecology and Conservation, EarlyView.
This paper takes a retrospective look at the changes in the extent of the Congo forest and great ape habitat in the past 20 years. The data and method used in this study are novel. This produced the very first Central Africa ‐specific oil palm extent and forest change dynamics, highlighting a great ape habitat and species range decline.
Mohammed S. Ozigis, Serge Wich, Adrià Descals, Zoltan Szantoi, Erik Meijaard   +4 more
wiley   +1 more source

Performance Analysis of Flat Surface Assumption and Residual Motion Errors on Airborne Repeat-pass InSAR

Leida xuebao, 2013
When applying to the airborne repeat-pass Interferometric Synthetic Aperture Radar (InSAR), which has long synthetic aperture and large azimuth-dependent errors, the surface assumption used to simply the time-domain algorithm model and the residual ...
Lin Xue, Li Fang-fang, Hu Dong-hui, Ding Chi-biao   +3 more
doaj   +1 more source

Advancing the mapping of vegetation structure in savannas using Sentinel‐1 imagery

Remote Sensing in Ecology and Conservation, EarlyView.
As vegetation structure monitoring is important for the understanding and conservation of savanna ecosystems, we explored the utility of C‐band synthetic aperture radar imagery for mapping both grassland and woody vegetation structure in the Greater Serengeti‐Mara Ecosystem.
Vera Thijssen, Marianthi Tangili, Ruth A. Howison, Han Olff   +3 more
wiley   +1 more source

Doppler Synthetic Aperture Radar Interferometry: A Novel SAR Interferometry for Height Mapping using Ultra-Narrowband Waveforms [PDF]

, 2017
This paper introduces a new and novel radar interferometry based on Doppler synthetic aperture radar (Doppler-SAR) paradigm. Conventional SAR interferometry relies on wideband transmitted waveforms to obtain high range resolution. Topography of a surface is directly related to the range difference between two antennas configured at different positions.
arxiv   +1 more source

Monitoring of a multi‐span prestressed concrete bridge using satellite interferometric data and comparison with on‐site sensor results

Structural Concrete, EarlyView.
Abstract Satellite‐based Synthetic Aperture Radar Interferometry (InSAR) represents a promising supplement to traditional Structural Health Monitoring (SHM) methods, offering a non‐invasive solution that eliminates the need for sensor installations and provides extensive spatial coverage.
Pier Francesco Giordano, Maciej Kwapisz, Andrea Miano, Riccardo Liuzzo, Alois Vorwagner, Maria Pina Limongelli, Andrea Prota, Marian Ralbovsky   +7 more
wiley   +1 more source

Interferometric synthetic aperture radar atmospheric correction: Medium Resolution Imaging Spectrometer and Advanced Synthetic Aperture Radar integration [PDF]

Geophysical Research Letters, 2006
Atmospheric water vapor effects represent one of the major limitations of repeat‐pass InSAR, and limit the accuracy of deformation rates derived from InSAR. The use of contemporaneous MERIS data to correct ENVISAT ASAR measurements shows a significant reduction in water vapor effects.
Li, ZH, Fielding, EJ, Cross, P, Muller, JP   +3 more
openaire   +3 more sources

Progressive InSAR phase estimation [PDF]

arXiv, 2020
This paper introduces a novel scheme to progressively estimate interferometric phases from a stack of synthetic aperture radar (SAR) images. The scheme is shown to yield comparable performance to full-covariance algorithms for a realistic decorrelation scenario.
arxiv  

Inpainting of Cyclic Data using First and Second Order Differences [PDF]

, 2014
Cyclic data arise in various image and signal processing applications such as interferometric synthetic aperture radar, electroencephalogram data analysis, and color image restoration in HSV or LCh spaces. In this paper we introduce a variational inpainting model for cyclic data which utilizes our definition of absolute cyclic second order differences.
arxiv   +1 more source

Remote estimation of geologic composition using interferometric synthetic-aperture radar in California's Central Valley [PDF]

arXiv, 2022
California's Central Valley is the national agricultural center, producing 1/4 of the nation's food. However, land in the Central Valley is sinking at a rapid rate (as much as 20 cm per year) due to continued groundwater pumping. Land subsidence has a significant impact on infrastructure resilience and groundwater sustainability.
arxiv