Results 21 to 30 of about 2,276,222 (297)

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

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

Multi-target detection and recognition by UAVs using online POMDPs [PDF]

open access: yes, 2013
This paper tackles high-level decision-making techniques for robotic missions, which involve both active sensing and symbolic goal reaching, under uncertain probabilistic environments and strong time constraints.
Lesire, Charles   +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

Modern GPR target recognition methods

open access: yes, 2021
Book chapter, 56 pages, 17 figures, 12 tables.
Giovanneschi, Fabio   +2 more
openaire   +2 more sources

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

Time course of target recognition in visual search [PDF]

open access: yes, 2010
Visual search is a ubiquitous task of great importance: it allows us to quickly find the objects that we are looking for. During active search for an object (target), eye movements are made to different parts of the scene.
Andreas Kotowicz   +4 more
core   +5 more sources

Inverse Synthetic Aperture Radar Imaging of Targets with Complex Motion based on Optimized Non-Uniform Rotation Transform

open access: yesRemote Sensing, 2018
Focusing on the inverse synthetic aperture radar (ISAR) imaging of targets with complex motion, this paper proposes a modified version of the Fourier transform, called non-uniform rotation transform, to achieve cross-range compression.
Wenzhen Wu   +4 more
doaj   +1 more source

A bottom–up model of spatial attention predicts human error patterns in rapid scene recognition [PDF]

open access: yes, 2007
Humans demonstrate a peculiar ability to detect complex targets in rapidly presented natural scenes. Recent studies suggest that (nearly) no focal attention is required for overall performance in such tasks.
Baldi, Pierre   +4 more
core   +2 more sources

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

Home - About - Disclaimer - Privacy