Results 41 to 50 of about 222,915 (359)
Inundation Extent Mapping by Synthetic Aperture Radar: A Review
Remote Sensing, 2019 Recent flood events have demonstrated a demand for satellite-based inundation mapping in near real-time (NRT). Simulating and forecasting flood extent is essential for risk mitigation. While numerical models are designed to provide such information, they
Xinyi Shen +4 more
semanticscholar +1 more source
Three- and Four-Dimensional Topographic Measurement and Validation
Remote Sensing, 2021 This paper reports on the activities carried out in the context of “Dragon project 32278: Three- and Four-Dimensional Topographic Measurement and Validation”.
Fabio Rocca +9 more
doaj +1 more source
3D Near-Field Virtual MIMO-SAR Imaging Using FMCW Radar Systems at 77 GHz [PDF]
arXiv, 2022 In this paper, we present 3D high resolution radar imaging at millimeter-Wave (mmWave) frequencies by means of a combination of virtual Multiple Input Multiple Output (MIMO) Frequency Modulated Continuous Wave (FMCW) Radars and Synthetic Aperture Radar (SAR) which results in a compact, low-cost, and high-speed 3D mmWave imagery system with low ...
arxiv
Compressed Synthetic Aperture Radar [PDF]
IEEE Journal of Selected Topics in Signal Processing, 2010 In this paper, we introduce a new synthetic aperture radar (SAR) imaging modality which can provide a high-resolution map of the spatial distribution of targets and terrain using a significantly reduced number of needed transmitted and/or received electromagnetic waveforms.
Rama Chellappa +3 more
openaire +2 more sources
Proposed satellite position determination systems and techniques for Geostationary Synthetic Aperture Radar [PDF]
, 2016 This paper proposes two different calibration techniques for Geostationary Synthetic Aperture Radar (GEOSAR) missions requiring a high precision positioning, based on Active Radar Calibrators and Ground Based Interferometry.
Broquetas Ibars, Antoni +3 more
core +2 more sources
Multi‐temporal synthetic aperture radar flood mapping using change detection
, 2018 A change detection and thresholding methodology has been adapted from previous studies to determine the extent of flooding for 13 Sentinel‐1 synthetic aperture radar images captured during the floods of winter 2015–2016 in Yorkshire, UK.
M. Clement, C. Kilsby, P. Moore
semanticscholar +1 more source
Four-dimensional SAR Imaging Algorithm Based on Iterative Reconstruction of Magnitude and Phase
Leida xuebao, 2016 Observation data obtained from the Four-Dimensional (4D) Synthetic Aperture Radar (SAR) system is sparse and non-uniform in the baseline-time plane. Hence, the imaging results acquired by traditional Fourier-based methods are limited by high side lobes ...
Ren Xiaozhen, Yang Ruliang
doaj +1 more source
Tunable high-resolution synthetic aperture radar imaging [PDF]
, 2022 We have recently introduced a modification of the multiple signal classification (MUSIC) method for synthetic aperture radar. This method depends on a tunable, user-defined parameter, $\epsilon$, that allows for quantitative high-resolution imaging. It requires however, relative large single-to-noise ratios (SNR) to work effectively. Here, we
arxiv +1 more source
Graph Based Imaging for Synthetic Aperture Radar [PDF]
, 2018 In this paper, we propose graph signal processing based imaging for synthetic aperture radar. We present a modified version of fused least absolute shrinkage and selection operator to cater for graph structure of the radar image. We solve the cost function via alternating direction method of multipliers.
arxiv +1 more source
IEEE Access, 2018 This paper presents a novel system to obtain images from the underground based on ground penetrating radar (GPR). The proposed system is composed by a radar module mounted on board an unmanned aerial vehicle (UAV), which allows the safe inspection of ...
María García Fernández +6 more
semanticscholar +1 more source