Results 41 to 50 of about 2,161,885 (199)

Cognitive radar for waveform diversity utilization

, 2021
S.218-223In this paper we discuss the relationship between cognitive radar and waveform diversity. The cognitive decision-making process selects the most appropriate waveform from the available set of diverse waveforms based on a perception of the ...
Martone, Anthony F., Charlish, Alexander, Alexander Charlish, Anthony F. Martone   +3 more
core   +1 more source

Target Identification with Improved 2D-VMD for Carrier-Free UWB Radar

Sensors, 2021
In recent years, the interest in radar automatic target recognition (RATR) based on the carrier-free ultra-wideband (UWB) radar has been increasing.
Yuying Zhu, Shuning Zhang, Huichang Zhao, Si Chen   +3 more
doaj   +1 more source

Adaptive Multi-Function Radar Temporal Behavior Analysis

Remote Sensing
The performance of radar mode recognition has been significantly enhanced by the various architectures of deep learning networks. However, these approaches often rely on supervised learning and are susceptible to overfitting on the same dataset.
Zhenjia Xu, Qingsong Zhou, Zhihui Li, Jialong Qian, Yi Ding, Qinxian Chen, Qiyun Xu   +6 more
doaj   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

Target recognition techniques for multifunction phased array radar [PDF]

, 2010
This thesis, submitted for the degree of Doctor of Philosophy at University College London, is a discussion and analysis of combined stepped-frequency and pulse-Doppler target recognition methods which enable a multifunction phased array radar designed
French, A.
core  

Signal Processing Methods to Improve Ocean Surface Wave Estimation from a High Frequency Surface Wave Radar [PDF]

, 2011
High frequency surface wave radars are operated as a remote sensor to measure ocean surface parameters to ranges exceeding 200-300 km from the coastline.
Wang, Wei
core   +6 more sources

Aspect-matched Waveform-classifier Joint Optimization for Distributed Radar Target Recognition

Leida xuebao
The automatic target recognition performance of radar is critically dependent on the quality of features extracted from target echo signals. As the information carrier that actively shapes echo signals, the transmitted waveform substantially affects the ...
Jiahang WANG, Junli LIANG, Wentao ZHU, Zihao CHEN, Ming GU   +4 more
doaj   +1 more source

Estimating the Instantaneous Frequency of Linear and Nonlinear Frequency Modulated Radar Signals—A Comparative Study

Sensors, 2021
Automatic modulation recognition plays a vital role in electronic warfare. Modern electronic intelligence and electronic support measures systems are able to automatically distinguish the modulation type of an intercepted radar signal by means of real ...
Hubert Milczarek, Czesław Leśnik, Igor Djurović, Adam Kawalec   +3 more
doaj   +1 more source

Liquid‐Crystal‐Based Reconfigurable Intelligent Surface for 7 GHz Mobile Communication

Advanced Materials Technologies, EarlyView.
The glass‐based liquid‐crystal reconfigurable intelligent surface (LC‐RIS) integrates active‐matrix driving and blind‐greedy phase optimization within a 5G‐NR OFDM framework. This enables continuously tunable and autonomous enhancement of wireless coverage. Leveraging the transparency and manufacturability of liquid crystal panels, it is ideally suited
Tien‐Lun Ting, Yuh‐Chyi Chang, Yi‐Chan Hung, Cheng‐Yuan Hsiao, Chao‐Kai Wen, Tsung‐Hsien Lin   +5 more
wiley   +1 more source

LPI Radar Signals Modulation Recognition Based on ACDCA-ResNeXt

IEEE Access, 2023
For low probability of intercept (LPI) radar waveform identification accuracy (ACC) problem at low Signal-to-Noise Ratios (SNRs), an approach based on time-frequency analysis (TFA) and Asymmetric Dilated Convolution Coordinate Attention Residual networks
Xudong Wang, Guiguang Xu, He Yan, Daiyin Zhu, Ying Wen, Zehu Luo   +5 more
doaj   +1 more source