Results 41 to 50 of about 1,363 (214)

LPI Radar Signal Recognition Based on Dual-Channel CNN and Feature Fusion [PDF]

, 2022
The accuracy of low probability of intercept (LPI) radar waveform recognition is an important and challenging problem in electronic warfare. Aiming at the problem of the difficulty in feature extraction and the low recognition rates of the LPI radar ...
Chongxiao Qu, Xiaofeng Wang, Zeyu Tang, Daying Quan, Wenchao Zhai   +4 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

Radar Waveform Design for Extended Target Recognition under Detection Constraints [PDF]

Mathematical Problems in Engineering, 2012
We address the problem of radar phase‐coded waveform design for extended target recognition in the presence of colored Gaussian disturbance. Phase‐coded waveforms are selected since they can fully exploit the transmit power with sufficient variability.
Meng, Huadong, Wei, Yimin, Gong, Xuhua, Liu, Yimin, Wang, Xiqin   +4 more
openaire   +1 more source

Localization and place recognition using an ultra-wide band (UWB) radar [PDF]

, 2015
This paper presents an approach to mobile robot localization, place recognition and loop closure using a monostatic ultra-wide band (UWB) radar system.
Roberts, Jonathan M., Elfes, Alberto, Eijiro Takeuchi, Alberto Elfes, Takeuchi, Eijiro, Jonathan Roberts   +5 more
core   +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

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

Space‐Time Coding Conformal Metasurfaces for Multifrequency Beam Steering and Shaping

Advanced Materials, EarlyView.
Space‐time coding conformal metasurfaces enable dynamic wave control on curved surfaces by combining programmable spatial patterns with temporal modulation. This study shows that a single conformal aperture can independently manipulate multiple frequency components, achieving multifunctional beam shaping and steering, with implications for ...
Filippo Pepe, Lei Zhang, Yi Ning Zheng, Xiao Qing Chen, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Tie Jun Cui, Vincenzo Galdi   +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  

Transfer learning‐based radar imaging with deep convolutional neural networks for distributed frequency modulated continuous waveform multiple‐input multiple‐output radars

IET Radar, Sonar & Navigation, 2021
Deep‐learning‐based radar imaging is developed with distributed frequency modulated continuous waveform multiple‐input multiple‐output (FMCW MIMO) radars in which a deep‐learning approach based on the convolutional neural network (CNN) is proposed to ...
Jiho Seo, Yunji Yang, Yong‐gi Hong, Jaehyun Park   +3 more
doaj   +1 more source

Metasurface‐Enabled Active‐Like Passive Radar

Advanced Science, EarlyView.
A programmable space‐time‐coding metasurface embeds distinct spatiotemporal tags into ambient wireless signals, allowing passive radar to operate in an active‐like manner. By enabling code‐correlated reconstruction under interference, the approach supports robust real‐time UAV tracking in complex environments and points to intelligent, low‐power ...
Mingyi Li, Jiawen Xu, Hanting Zhao, Xu Zhao, Yanjin Chen, Tie Jun Cui, Vincenzo Galdi, Lianlin Li   +7 more
wiley   +1 more source