Results 1 to 10 of about 48 (42)

Moving Target Shadow Analysis and Detection for ViSAR Imagery

open access: yesRemote Sensing, 2021
The video synthetic aperture radar (ViSAR) is a new application in radar techniques. ViSAR provides high- or moderate-resolution SAR images with a faster frame rate, which permits the detection of the dynamic changes in the interested area.
Zhihua He   +5 more
doaj   +3 more sources

Generation of Multiple Frames for High Resolution Video SAR Based on Time Frequency Sub-Aperture Technique

open access: yesRemote Sensing, 2023
Video Synthetic Aperture Radar (ViSAR) operating in spotlight mode has received widespread attention in recent years because of its ability to form a sequence of SAR images for a region of interest (ROI). However, due to the heavy computational burden of
Congrui Yang   +5 more
doaj   +3 more sources

Implementation Method of Automotive Video SAR (ViSAR) Based on Sub-Aperture Spectrum Fusion

open access: yesRemote Sensing, 2023
The automotive synthetic aperture radar (SAR) can obtain two-dimensional (2-D) high-resolution images and has good robustness compared with the other sensors.
Ping Guo   +4 more
doaj   +3 more sources

A Novel Generation Method of High Quality Video Image for High Resolution Airborne ViSAR

open access: yesRemote Sensing, 2021
Video synthetic aperture radar (ViSAR) can provide long-time surveillance of a region of interest (ROI), which is one of the hotspot directions in the SAR field. In order to better display ViSAR, a high resolution and high frame rate are needed.
Jingwei Chen   +5 more
doaj   +3 more sources

Miniaturization Design of High-Integration Unmanned Aerial Vehicle-Borne Video Synthetic Aperture Radar Real-Time Imaging Processing Component

open access: yesRemote Sensing
The unmanned aerial vehicle (UAV)-borne video synthetic aperture radar (SAR) possesses the characteristic of having high-continuous-frame-rate imaging, which is conducive to the real-time monitoring of ground-moving targets.
Tao Yang   +6 more
doaj   +3 more sources

Architecture Exploration of a Backprojection Algorithm for Real-Time Video SAR

open access: yesSensors, 2021
This paper explores novel architectures for fast backprojection based video synthetic aperture radar (BP-VISAR) with multiple GPUs. The video SAR frame rate is analyzed for non-overlapped and overlapped aperture modes.
Seokwon Lee   +4 more
doaj   +1 more source

A Novel Multistage Back Projection Fast Imaging Algorithm for Terahertz Video Synthetic Aperture Radar

open access: yesRemote Sensing, 2023
Terahertz video synthetic aperture radar (THz-ViSAR) has tremendous research and application value due to its high resolution and high frame rate imaging benefits. However, it requires more efficient imaging algorithms.
Qibin Zheng   +3 more
doaj   +1 more source

Signal Processing for a Multiple-Input, Multiple-Output (MIMO) Video Synthetic Aperture Radar (SAR) with Beat Frequency Division Frequency-Modulated Continuous Wave (FMCW)

open access: yesRemote Sensing, 2017
In this paper, we present a novel signal processing method for video synthetic aperture radar (ViSAR) systems, which are suitable for operation in unmanned aerial vehicle (UAV) environments.
Seok Kim   +4 more
doaj   +1 more source

A ViSAR Shadow-Detection Algorithm Based on LRSD Combined Trajectory Region Extraction

open access: yesRemote Sensing, 2023
Shadow detection is a new method for video synthetic aperture radar moving target indication (ViSAR-GMTI). The shadow formed by the target occlusion will reflect its real position, preventing the defocusing or offset of the moving target from making it ...
Zhongzheng Yin, Mingjie Zheng, Yuwei Ren
doaj   +1 more source

Video SAR Moving Target Tracking Using Joint Kernelized Correlation Filter

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Video synthetic aperture radar (ViSAR) has been found very useful for the surveillance of ground moving targets. The target energy can be utilized for ground moving target tracking, while the dynamic shadows of moving targets enable an alternative ...
Chao Zhong, Jinshan Ding, Yuhong Zhang
doaj   +1 more source

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