Results 71 to 80 of about 83,251 (291)

An Efficient Preprocessing Approach for Airborne Hybrid SAR and ISAR Imaging of Ship Target Based on Kernel Distribution

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
The airborne hybrid synthetic aperture radar (SAR) and inverse synthetic aperture radar (ISAR) imaging for the ship target is very important in the field of ocean surveillance, but it suffers from the problem of high computational complexity.
Rui Cao   +3 more
doaj   +1 more source

Fast Matrix Inversion and Determinant Computation for Polarimetric Synthetic Aperture Radar

open access: yes, 2018
This paper introduces a fast algorithm for simultaneous inversion and determinant computation of small sized matrices in the context of fully Polarimetric Synthetic Aperture Radar (PolSAR) image processing and analysis.
Cintra, R. J.   +3 more
core   +1 more source

Resolution and Error Constraints of Topographic Measurements for Accurate Lava Flow Forecasting

open access: yesGeophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract The main parameters required to forecast lava flows are the eruption effusion rate, the lava viscosity, and the pre‐eruption topography. We focus on how the spatiotemporal resolution and vertical errors of topographic measurements affect lava flow forecasts.
Alberto Roman, Paul Lundgren
wiley   +1 more source

Two Dimensional Array Imaging with Beam Steered Data

open access: yes, 2013
This paper discusses different approaches used for millimeter wave imaging of two-dimensional objects. Imaging of a two dimensional object requires reflected wave data to be collected across two distinct dimensions.
Patole, Sujeet, Torlak, Murat
core   +1 more source

An improved inverse synthetic aperture radar range alignment method based on maximum contrast

open access: yesJurnal Engineering, 2019
Inverse synthetic aperture radar (ISAR) is an important tool for non-cooperative ship imaging, and one key step of ISAR imaging is range alignment. To achieve the range alignment with high precision, efficiency and robustness, an improved ISAR range ...
Yong Li   +4 more
semanticscholar   +1 more source

Multi‐layer root zone soil moisture estimation using field and remote sensing data fusion with machine learning in semi‐arid croplands

open access: yesVadose Zone Journal, Volume 24, Issue 6, November/December 2025.
Abstract This study aims to estimate multi‐layer soil moisture (SM) in 30‐cm increments up to 180 cm by integrating multimodal sub‐field and remote sensing data and applying machine learning algorithms. PlanetScope (optical sensor) data, climatic variables, and in situ soil properties were used as input features to estimate SM at 3‐m spatial resolution.
Manoj Lamichhane   +2 more
wiley   +1 more source

Persepsi pelajar sarjana muda kejuruteraan elektrik terhadap program latihan industri, Kolej Universiti Teknologi Tun Hussein Onn [PDF]

open access: yes, 2002
Kajian ini dijalankan bertujuan untuk mengetahui persepsi Pelajar Sarjana Muda Kejuruteraan Elektrik Terhadap Program Latihan Industri, KUiTTHO berdasarkan kepada 4 faktor iaitu kesesuaian penempatan program latihan industri, kesesuaian pendedahan ...
Mohamad Nur, Hanirah
core  

Modeling the Burden of Extreme Weather Events in a Large Network of International HIV Care Cohorts

open access: yesGeoHealth, Volume 9, Issue 11, November 2025.
Abstract Extreme weather events (EWEs) continue to threaten the health and well‐being of populations across the globe. However, risk from drought and floods is not evenly distributed spatially nor are all populations equally at risk for poor health outcomes.
Sophia D. Arabadjis   +15 more
wiley   +1 more source

Refocusing Moving Ship Targets in SAR Images Based on Fast Minimum Entropy Phase Compensation

open access: yesSensors, 2019
Moving ship targets appear blurred and defocused in synthetic aperture radar (SAR) images due to the translation motion during the coherent processing. Motion compensation is required for refocusing moving ship targets in SAR scenes.
Xiangli Huang   +4 more
doaj   +1 more source

Real-time programmable acoustooptic synthetic aperture radar processor [PDF]

open access: yes, 1988
The acoustooptic time-and-space integrating approach to real-time synthetic aperture radar (SAR) processing is reviewed, and novel hybrid optical/electronic techniques, which generalize the basic architecture, are described.
Haney, Michael, Psaltis, Demetri
core   +1 more source

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