Results 71 to 80 of about 3,154,280 (172)
Video synthetic aperture radar (SAR) has exhibited considerable potential for detecting and tracking ground moving targets. Numerous classical shadow-based detection methods have been applied in video SAR.
Hui Fang +5 more
doaj +1 more source
Two pre‐training methods are proposed to leverage off‐the‐shelf vision foundation models to improve the feature representations of an infrared foundation model. Experiments conducted on two downstream tasks each with two distinct datasets show that vision foundation models pre‐trained on natural images effectively benefit infrared model pre‐training ...
Jun‐Hyung Kim, Goo‐Rak Kwon
wiley +1 more source
Evaluation of YOLO Key Modules Using Synthetic Aperture Images
Four typical YOLO modules based on YOLOv8, YOLOv11, YOLOv12 and YOLOv13 are focused on in this letter. Significant potential is owned by the work in this letter to provide some important conclusions for users choice. Experimental support and data preparation are also provided for future YOLO architecture optimisation research. ABSTRACT Target detection
Dandan Liu, Yuxiang Ding, Zhiping Xu
wiley +1 more source
From Flight to Intelligence: UAV Applications and Federated Learning Approaches
The article systematically reviews the significant challenges in UAV communication control, including connectivity preservation, wireless security vulnerabilities and mobility management in dynamic 3D environments. The article explores recent advancements in UAV applications across many fields, emphasising the growing need for robust communication and ...
Ghadah Aldehim +7 more
wiley +1 more source
Moving targets often appear defocused and displaced in SAR imagery, complicating detection and recognition—especially when displaced into cluttered regions, where signal‐to‐background ratio is reduced. This work presents a multistatic SAR framework that extracts moving target signatures and reconstructs focused images, providing new insights into the ...
Francis Watson +2 more
wiley +1 more source
Advanced Bistatic and Multistatic SAR Concepts and Applications [PDF]
Tutorial on Bistatic and Multistatic Synthetic Aperture Radar from EUSAR 2006 ...
Krieger, Gerhard
core
Synthetic aperture sonar imaging using compressive sensing and an ultrasound transducer array [PDF]
Includes bibliographical references.Compressive sensing (CS) also known as compressive sampling is a technique used to reconstruct or recover the full-length of a signal with only a few non-adaptive measurements.
Jideani, Josiah Chimnanu
core +1 more source
Spaceborne Bi- and Multistatic SAR: Potential and Challenges [PDF]
Bi- and multistatic synthetic aperture radar (SAR) operates with distinct transmit and receive antennas that are mounted on separate platforms. Such a spatial separation has several operational advantages, which will increase the capability, reliability ...
Moreira, Alberto, Krieger, Gerhard
core +1 more source
Shadow Spatiotemporal Track-Before-Detect Approach for Distributed UAV-Borne Video SAR
Shadow detection has become a key technology for ground-based moving target indication in video synthetic aperture radar (SAR). However, single-platform video SAR faces the issue of moving-target shadows being occluded.
Liwu Wen +4 more
doaj +1 more source
Advanced Digital Beamforming Concepts for High Performance Synthetic Aperture Radar (SAR) Imaging [PDF]
This paper reviews advanced multi-channel SAR system concepts for the imaging of wide swaths with high resolution. Several novel system architectures employing both direct radiating arrays and reflector antennas fed by a digitial array are introduced ...
Patyuchenko, Anton +6 more
core

