Results 171 to 180 of about 507,465 (200)

Biologically Inspired DOA Estimation Method for Small-Aperture Direction Finding HF Radar

IEEE Geoscience and Remote Sensing Letters
A high-frequency (HF) surface-wave radar has been widely used in marine monitoring and vessel surveillance, among which compact ones, e.g., a crossed-loop/monopole antenna (CMA), are preferred in many scenarios for their low costs and easy maintenance ...
Jiaxue Zhang, Qinghao Zhu, Da Huang, Hao Zhou, Yingwei Tian   +4 more
semanticscholar   +1 more source

Direction Finding for Shipborne HFSWR based on Integral Reconstruction and Virtual Array Transformation

Oceans
Shipborne high-frequency surface wave radar (HFSWR) has been widely studied due to its good maneuverability and great advantages in maritime detection and monitoring.
Cheng Wang, Ling Zhang, Xiaozhong Zhang, J. Niu, Zhaokai Liu, Zongtai Li, Jiangnan Zhong   +6 more
semanticscholar   +1 more source

DeepTDOA: Direction Finding using Deep Learning on Distributed TDOA-based Systems in the Presence of Time Offset

Signal Processing and Communications Applications Conference
With the advancing sensor (receiver-processor) technology, Time Difference of Arrival (TDOA) based systems have become attractive for estimating the direction of a transient or pulsed signal.
Mehmet Altan Toksöz, Mustafa Küçük, Mustafa Atahan Nuhoglu, B. Yildirim   +3 more
semanticscholar   +1 more source

Research on Interference Methods for Interferometer Direction-finding Based on Dual-point Source Co-processing

IEEE International Conference on Electronic Information and Communication Technology
Most interferometer direction-finding (DF) interference techniques are limited by the difficulty of achieving coherent interference, failing to interfere with DF effectively.
Qi Zhao, Zhonghao Lu, Shunping Xiao
semanticscholar   +1 more source

Analysis of the Influence of Forwarding Waveform with Time-domain Mismatch on Time Difference Direction Finding

Progress in Electromagnetics Research Symposium
Compared with other passive direction finding (DF) methods, such as amplitude and phase comparison DF, time difference DF has the advantages of high measurement accuracy, fast processing speed, and simple hardware structure, and has a wide range of ...
Qi Zhao, Zhonghao Lu, Shunping Xiao
semanticscholar   +1 more source

An Ultra-wideband Circular Array Interferometer and Direction Finding Algorithm

Progress in Electromagnetics Research Symposium
To solve the contradiction between the direction of arrival (DOA) estimation accuracy in the lower frequency band and phase ambiguity in the higher frequency band for an ultra-wideband direction finding (DF) system, this paper presents an omnidirectional
Qiancheng Ying, Le Zuo
semanticscholar   +1 more source

Coupled Feed Mechanically Rotating Antenna for Unmanned Aerial Vehicle Direction-Finding

IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications
This paper proposes a coupled feed mechanically rotating antenna for unmanned aerial vehicle (UAV) direction-finding (DF). The propeller blades themselves are designed as a half-wave dipole., with a cross-shaped feed component mounted on the blade safety
Wentao Li, Ruyu Ma, Junhui Ou, X. Zhang
semanticscholar   +1 more source

A Novel Small Aperture Direction Finding System Based on Phase Mode Antenna

2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI)
A novel small aperture direction finding (DF) system based on phase mode antenna (PMA) is proposed to estimate the angle of arrival of (Ao $A$) signal without ambiguity.
Xudong Tang, Jun-ping Geng, Jingzheng Lu, Silei Yang, Xuepeng Li, Rui Zhao, Heci Liu, Mingxia Meng, Enyu Li, Xinhe Yuan, Kun Wang   +10 more
semanticscholar   +1 more source

Description of Wind/Waves/RAD1 L3 Direction-Finding (DF) data production

2022
Bonnin, Xavier, Hoang, Sang, Cecconi, Baptiste, Issautier, Karine   +3 more
openaire   +1 more source

Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly