Results 81 to 90 of about 3,561,553 (287)

High-Gain Miniaturized Ultrawideband Antipodal Vivaldi Antenna with Metamaterials

Micromachines
A compact high-gain antipodal Vivaldi antenna with ultra-wideband (UWB) performance ranging from 1 GHz to 25 GHz is proposed and demonstrated. The antenna features two sets of tapered exponential slots along the flare edges to enhance low-frequency ...
Wentao Zhang, Linqi Shi, Chenjie Zhao, Rui Yang   +3 more
doaj   +1 more source

Push the Limits: Human‐Like Multimodal Extreme Embodied Intelligence for Autonomous Racing

Advanced Robotics Research, EarlyView.
Autonomous racing tests embodied intelligence under extreme control limits of speed, actuation, and decision‐making. Inspired by human multimodality, we present Apex, an embodied agent deployed on a super‐formula racing car at Yas Marina. Integrating physics‐informed perception, multimodal learning, and tasking, Apex cuts lap times by 15% and achieves ...
Yanxin Zhou, Baichuan Lou, Wenhui Huang, Binbin Hu, Haohan Yang, Haochen Liu, Xiangkun He, Chee Kiong Ong, Yiran Zhang, Tianchu Su, Bolin Zhao, Xiaoyu Mo, Holden King Ho Li, Chen Lv   +13 more
wiley   +1 more source

Wideband Linearly Polarized Over-2-Bit Transmitarray Antenna for Millimeter-Wave Applications

Micromachines
A wideband linearly polarized over-2-bit transmitarray antenna (TA) using the receiving-transmitting (R-T) scheme in the millimeter-wave band is presented in this work. The TA unit consists of two rectangular patches with a pair of bent branches, and the
Yuanjun Shen, Xuli Feng, Tianling Zhang
doaj   +1 more source

Radar/ESM anti-bias track association algorithm based on track distance vector detection

The Journal of Engineering, 2019
To address radar/ESM track association problem in the presence of sensor biases and different targets reported by different sensors, an anti-bias track association algorithm based on track distance vectors detection is proposed according to the ...
Baozhu Li, Yunlong Dong, Gaodong Huang, Xiaolong Chen, Jian Guan   +4 more
doaj   +1 more source

Development and performance evaluation of a multistatic radar system [PDF]

, 2008
Multistatic radar systems are of emerging interest as they can exploit spatial diversity, enabling improved performance and new applications. Their development is being fuelled by advances in enabling technologies in such fields as communications and ...
Doughty, Shaun Raymond, Doughty, S.R.
core  

Physics‐Embedded Neural Network: A Novel Approach to Design Polymeric Materials

Advanced Science, EarlyView.
Traditional black‐box models for polymer mechanics rely solely on data and lack physical interpretability. This work presents a physics‐embedded neural network (PENN) that integrates constitutive equations into machine learning. The approach ensures reliable stress predictions, provides interpretable parameters, and enables performance‐driven, inverse ...
Siqi Zhan, Hengheng Zhao, Haotian Wang, Zhanjie Liu, Qian Li, Weifeng Zhang, Qingsong Zhao, Liqun Zhang, Jun Liu   +8 more
wiley   +1 more source

Bandwidth-Enhancement Single-Patch Antenna with Dual-Beam Pattern via Seven-Mode Operation

Sensors
This paper presents a low-profile wideband in-phase-fed microstrip patch antenna (MPA) operating with TM60, TM04, TM62, TM24, TM44, TM82, and TM80 modes. First, a rectangular in-phase-fed MPA is theoretically analyzed to clarify how these seven modes can
Shixi Huang, Nengwu Liu, Qilong Yan
doaj   +1 more source

Multi-target tracking of birds in complex low-altitude airspace based on GM_PHD filter

The Journal of Engineering, 2019
GM_PHD (Gaussian mixture of probability hypothesis density) cannot completely track multiple targets, such as the flying birds in the complex low-altitude airspace near the airport, due to the lack of the steps of birth detection, track extraction and ...
Tao Hong, Wu Zhang, Weishi Chen, Xiaolong Chen, Xinru Fu   +4 more
doaj   +1 more source

Surface‐Spin‐Induced Magnetic Loss Enhancement in Ultralight Electromagnetic Absorbers

Advanced Science, EarlyView.
Fe3O4 nanoparticles with different hollow rates were synthesized to demonstrate the key role of surface moment in magnetic loss process. Using the same volume filling ratio, the 54.1% hollow Fe3O4 absorber represents about 20% enhancement in the imaginary part (μ'') than solid particles due to the coexisting magnetic resonance of inside and outside ...
Ruimin Ren, Ke Yang, Chichong Lu, Song Ma, Bowen Zheng, Zhenhui Ma   +5 more
wiley   +1 more source

Boundary-Reinforced Reciprocal Point Learning With Correlation-Aware Multiclassification for Open-Set Hyperspectral Image Classification

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Existing open-set classification methods for hyperspectral images (HSIs) often treat unknown categories as a homogeneous cluster, failing to exploit spectral–spatial heterogeneity for fine-grained discrimination.
Tuo Xu, Yuefan Du, Xi Yang, Yingzeng Yin
doaj   +1 more source