Results 31 to 40 of about 70,289 (311)

Adversarial Patch Attack on Multi-Scale Object Detection for UAV Remote Sensing Images

open access: yesRemote Sensing, 2022
Although deep learning has received extensive attention and achieved excellent performance in various scenarios, it suffers from adversarial examples to some extent. In particular, physical attack poses a greater threat than digital attack.
Yichuang Zhang   +6 more
doaj   +1 more source

Model-based sensor fusion for target recognition

open access: yes, 2022
S.98-107The automatic recognition and interpretation of complex structures from imagery, e.g. radar or IR images, needs a structure-oriented analysis method.
Jurkiewicz, K., Jäger, K., Bers, K.H.
core   +1 more source

Independent Random Recurrent Neural Networks for Infrared Spatial Point Targets Classification

open access: yesApplied Sciences, 2019
Exo-atmospheric infrared (IR) point target discrimination is an important research topic of space surveillance systems. It is difficult to describe the characteristic information of the shape and micro-motion states of the targets and to discriminate ...
Dongya Wu   +3 more
doaj   +1 more source

Variability and robustness of scatterers in HRR/ISAR ground target data and its influence on the ATR performance

open access: yes, 2022
Paper 804911The most challenging problem of Automatic Target Recognition (ATR) is the extraction of robust and independent target features which describe the target unambiguously.
Schimpf, H.   +2 more
core   +1 more source

Analysis and Design of M-Channel Hybrid Filter Bank With Digital Calibration

open access: yesIEEE Access, 2018
Hybrid filter bank (HFB) is widely used in frequency-interleaved analog-to-digital converters, but traditional HFB structures suffer various degrees of imperfections. This paper presents a new-structure HFB based on power complementary pair. The proposed
Xiangyu Peng   +4 more
doaj   +1 more source

Maritime target identification in flash-ladar imagery

open access: yes, 2022
Paper 83910C, 9 S.The paper presents new techniques and processing results for automatic segmentation, shape classification, generic pose estimation, and model-based identification of naval vessels in laser radar imagery.
Armbruster, Walter, Hammer, Marcus
core   +1 more source

Range migration compensation for moving targets in chirp radars with stepped frequency

open access: yesThe Journal of Engineering, 2019
Long-time coherent pulse integration method has been extensively used in detecting weak targets, but the detection performance is affected by range migration (RM) due to high radial velocity.
Wang Sen, Bao Qinglong, Chen Zengping
doaj   +1 more source

R2FA-Det: Delving into High-Quality Rotatable Boxes for Ship Detection in SAR Images

open access: yesRemote Sensing, 2020
Recently, convolutional neural network (CNN)-based methods have been extensively explored for ship detection in synthetic aperture radar (SAR) images due to their powerful feature representation abilities.
Shiqi Chen, Jun Zhang, Ronghui Zhan
doaj   +1 more source

Polarimetric calibration and its influence on target recognition performance

open access: yes, 2022
Paper 73350ZFully polarimetric radars that use polarization diversity on transmit and receive and thus provide the full scattering matrix, are subject to effects like cross-talk and channel imbalance. These distortions have to be eliminated by means of a
Schimpf, H.
core   +1 more source

Radar Target Localization with Multipath Exploitation in Dense Clutter Environments

open access: yesApplied Sciences, 2023
The performance of classic radar geometry based on the line-of-sight (LOS) signal transmitted from radar to the target in the free space is affected by multipath echoes in urban areas, where non-line-of-sight (NLOS) signals reflected by obstacles are ...
Rui Ding   +3 more
doaj   +1 more source

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