Results 81 to 90 of about 31,347 (302)
Coast–Ship Bistatic HF Surface Wave Radar: Simulation Analysis and Experimental Verification
Remote Sensing, 2020 The coast−ship bistatic high-frequency surface wave radar (HFSWR) not only has the anti-interference advantages of the coast-based bistatic HFSWR, but also has the advantages of maneuverability and an extended detection area of the shipborne HFSWR.
Yonggang Ji +8 more
doaj +1 more source
, 2019 We apply a multilayer perceptron machine learning (ML) regression approach to infer electromagnetic (EM) duct heights within the marine atmospheric boundary layer (MABL) using sparsely sampled EM propagation data obtained within a bistatic context.
Earls, Christopher J., Sit, Hilarie
core +1 more source
Detection of Mines in Acoustic Images using Higher Order Spectral Features [PDF]
, 2002 A new pattern-recognition algorithm detects approximately 90% of the mines hidden in the Coastal Systems Station Sonar0, 1, and 3 databases of cluttered acoustic images, with about 10% false alarms.
Chandran, Vinod +2 more
core +3 more sources
Advanced Intelligent Systems, EarlyView.Variational Autoencoder+Deep Deterministic Policy Gradient addresses low‐light failures of infrared depth sensing for indoor robot navigation. Stage 1 pretrains an attention‐enhanced Variational Autoencoder (Convolutional Block Attention Module+Feature Pyramid Network) to map dark depth frames to a well‐lit reconstruction, yielding a 128‐D latent code ...
Uiseok Lee +7 more
wiley +1 more source
Phenomenological approach to scatterometer data interpretation [PDF]
A graphic method of analyzing radar scatterometer sea clutter data leading to linear relations between scattering cross sections and tan angle of incidence of the radiation is proposed.
Alzofon, F. E.
core +1 more source
Scanning of Vehicles for Nuclear Materials
, 2013 Might a nuclear-armed terrorist group or state use ordinary commerce to deliver a nuclear weapon by smuggling it in a cargo container or vehicle? This delivery method would be the only one available to a sub-state actor, and it might enable a state to ...
Katz, J. I.
core +1 more source
A robust nonlinear scale space change detection approach for SAR images [PDF]
, 2013 In this paper, we propose a change detection approach based on nonlinear scale space analysis of change images for robust detection of various changes incurred by natural phenomena and/or human activities in Synthetic Aperture Radar (SAR) images using ...
Demirkesen, Can +4 more
core +1 more source
Context Awareness and Human–Robot Interaction Optimization for Museum Intelligent Guide Robot
Advanced Intelligent Systems, EarlyView.This study presents a context‐aware human–robot interaction framework designed for intelligent museum guide robots. The system features a three‐layer architecture—perception, understanding, and behavior execution—that enables adaptive and meaningful interactions with museum visitors.
Anna Zou, Yue Meng, Shijing Tong
wiley +1 more source
Rapid Simulation of Temporal-Spatial Correlated 3D Sea Clutter
International Journal of Antennas and Propagation, 2019 Due to the difficulties in actual measurement of sea clutter and uncertainties of experimental data, the electromagnetic (EM) scattering model becomes a better alternative means to acquire the sea clutter. However, the EM scattering model still faces the
Ye Zhao +3 more
doaj +1 more source
Simulation of coherent sea clutter
IET Radar, Sonar & Navigation, 2010 This study provides a brief overview of methods used to simulate sea clutter. It then offers a simple and flexible way of generating non-stationary coherent sea clutter that matches higher order statistics of real clutter in the time domain, as well as the shape and intensity distribution within the Doppler domain.
openaire +1 more source