Refocusing swing ships in SAR imagery based on spatial-variant defocusing property
J Wang, X Leng, Z Sun, X Zhang, K Ji - Remote Sensing, 2023 - mdpi.com
Synthetic aperture radar (SAR) is an essential tool for maritime surveillance in all weather
conditions and at night. Ships are often affected by sea breezes and waves, generating a …
conditions and at night. Ships are often affected by sea breezes and waves, generating a …
[HTML][HTML] Deep learning-based dynamic region of interest autofocus method for grayscale image
Y Wang, C Wu, Y Gao, H Liu - Sensors, 2024 - mdpi.com
In the field of autofocus for optical systems, although passive focusing methods are widely
used due to their cost-effectiveness, fixed focusing windows and evaluation functions in …
used due to their cost-effectiveness, fixed focusing windows and evaluation functions in …
Generative Artificial Intelligence Meets Synthetic Aperture Radar: A survey
SAR images possess unique attributes that present challenges for both human observers
and vision AI models to interpret, owing to their electromagnetic characteristics. The …
and vision AI models to interpret, owing to their electromagnetic characteristics. The …
[HTML][HTML] A Fast and Robust Range Alignment Method for ISAR Imaging Based on a Deep Learning Network and Regional Multi-Scale Minimum Entropy Method
Q Ning, H Wang, Z Yan, Z Wang, Y Lu - Remote Sensing, 2024 - mdpi.com
In inverse synthetic aperture radar (ISAR) imaging, range alignment (RA) is crucial for
translational compensation. To address the need for rapidity and accuracy in the RA …
translational compensation. To address the need for rapidity and accuracy in the RA …
Analysis of U-NET Super-Resolving Capabilities in Radar Imaging
This paper investigates the super-resolving power of U-NET when applied to a radar
imaging problem. In particular, we consider a 2D free-space scenario probed by a …
imaging problem. In particular, we consider a 2D free-space scenario probed by a …
[PDF][PDF] 基于最小熵准则与生成对抗网络的SAR 三维转动舰船目标重聚焦方法
化青龙， 张云， 任航， 姜义成， 徐丹 - 电子学报, 2024 - ejournal.org.cn
在合成孔径雷达(Synthetic Aperture Radar, SAR) 系统中, 舰船目标在中高海情下的三维转动会
导致多普勒频谱时变和图像散焦, 并对后续SAR 舰船目标的信息解释造成不利影响 …
导致多普勒频谱时变和图像散焦, 并对后续SAR 舰船目标的信息解释造成不利影响 …
Convolution technique for focusing of ISAR images
Defocusing is an undesirable phenomenon in remote sensing. Defocusing arises due to the
platform motion irregularity or the target motion. The focusing techniques in the literature …
platform motion irregularity or the target motion. The focusing techniques in the literature …
A fast and precise autofocus method using linear array CCD
Z Wang, R Ma, C Zeng, L Liu, X Li… - Optical Metrology and …, 2024 - spiedigitallibrary.org
In the integrated chip industry, there is a growing demand of defect detection, and the
autofocus capability of microscopy can significantly enhance efficiency. This paper presents …
autofocus capability of microscopy can significantly enhance efficiency. This paper presents …
PEE-Net: Phase Error Estimation Network for Refocusing of Three-Dimensional Rotating Ship Target in SAR Images
Q Hua, Y Zhang, H Ren, N Kang… - IGARSS 2024-2024 …, 2024 - ieeexplore.ieee.org
In a synthetic aperture radar (SAR) system, the three-dimensional rotation of ship targets in
the presence of medium to high sea states could cause Doppler frequency shifts and image …
the presence of medium to high sea states could cause Doppler frequency shifts and image …
[PDF][PDF] Deep Learning for GPS-Denied SAR Image Focusing and Vehicle Trajectory Estimation
This article integrates AI algorithms into a GPS-denied Synthetic Aperture Radar (SAR)
processing framework to transform coherent electromagnetic (EM) radiofrequency (RF) …
processing framework to transform coherent electromagnetic (EM) radiofrequency (RF) …