Results 91 to 100 of about 3,154,280 (172)

An Image Stabilization Method for Airborne Video SAR Based on a Joint Singer-Random Walk Model

Remote Sensing
Video synthetic aperture radar (ViSAR) provides continuous multiframe images while maintaining high resolution and has become an important tool for complex scene surveillance and moving target tracking.
Yanping Wang, Shuo Wang, Zhirui Wang, Guanyong Wang   +3 more
doaj   +1 more source

Spaceborne SAR Operating Mode Recognition Network Based on Azimuth Time-Frequency Amplitude Sequence

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Synthetic aperture radar (SAR) plays a significant role in electronic reconnaissance due to its high-resolution imaging capabilities. Recognizing the operating modes of spaceborne SAR systems is crucial for implementing targeted jamming measures to ...
Jiayue Cao, Fei Teng, Guangzuo Li, Bing Han, Zhongqiu Xu, Zongxiang Xu, Wen Hong   +6 more
doaj   +1 more source

High Frame Rate ViSAR Based on OAM Beams: Imaging Model and Imaging Algorithm

Remote Sensing
High frame rate imaging of synthetic aperture radar (SAR), also known as video SAR (ViSAR), has attracted extensive research in recent years. When ViSAR system parameters are fixed, there is a technical trade-off between high frame rates and high ...
Xiaopeng Li, Liying Xu, Yongfei Mao, Weisong Li, Yinwei Li, Hongqiang Wang, Yiming Zhu   +6 more
doaj   +1 more source

A Video SAR Multi-Target Tracking Algorithm Based on Re-Identification Features and Multi-Stage Data Association

Remote Sensing
Video Synthetic Aperture Radar (ViSAR) operates by continuously monitoring regions of interest to produce sequences of SAR imagery. The detection and tracking of ground-moving targets, through the analysis of their radiation properties and temporal ...
Anxi Yu, Boxu Wei, Wenhao Tong, Zhihua He, Zhen Dong   +4 more
doaj   +1 more source

Ultra Wide Swath Imaging With Multi-Channel SAR Systems [PDF]

, 2008
Multi-channel radar systems allow for overcoming the inherent limitation of conventional synthetic aperture radar (SAR). An example is the combination of digital beamforming on receive in elevation with multi-aperture SAR signal reconstruction in azimuth
Bordoni, Federica, Moreira, Alberto, Younis, Marwan, Gebert, Nicolas, Krieger, Gerhard   +4 more
core  

RSCIWANet: Regional Spatial-Channel Information Weighted Attention Network for Video SAR and Large-Scale SAR Image Targets Detection

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Synthetic aperture radar (SAR) encounters distinct challenges in airborne surveillance (dynamic scene variations, target edge blurring) and spaceborne observation (large-scale analysis, high-resolution processing).
Hao Chang, Ping Lang, Xiongjun Fu, Kunyi Guo, Xinqing Sheng, Jialin Guan, Chuyi Liu   +6 more
doaj   +1 more source

The Staggered SAR concept: Imaging a wide continuous swath with high resolution [PDF]

, 2013
Staggered SAR is an innovative synthetic aperture radar (SAR) concept, based on the continuous variation of the pulse repetition interval (PRI). This concept allows high-resolution imaging of a wide continuous swath without the need for a long antenna ...
Villano, Michelangelo, Moreira, Alberto, Krieger, Gerhard   +2 more
core  

A physical Scattering-Guided Prior-Enhanced Mamba model for high-fidelity SAR ship generation in complex backgrounds

International Journal of Applied Earth Observations and Geoinformation
Synthetic Aperture Radar (SAR) image synthesis remains challenging in Earth observation (EO) due to unique speckle noise and the high dynamic range of backscatter coefficients.
Moran Ju, Changqi Wang, Si-Nian Jin
doaj   +1 more source

Airborne Synthetic Aperture Radar: Models, Focusing and Experiments [PDF]

, 2006
Synthetic Aperture Radar (SAR) is a remote sensing technique that allows the generation of microwave images of the Earth surface, independently of weather condition and of sun illumination.
Perna, Stefano
core   +1 more source

Semi-supervised Video Synthetic Aperture Radar Shadow Tracking Based on Physics-aware Spectral Spatial Attention and Kinematic Constraints

Leida xuebao
Moving target shadow tracking in Video Synthetic Aperture Radar (Video SAR) faces significant challenges, including strong speckle noise interference, substantial nonrigid target deformation, and a scarcity of supervised training samples.
Senhao GAO, Xiaqing YANG, Jun SHI, Guolong CUI, Junjie WU   +4 more
doaj   +1 more source