Results 41 to 50 of about 35,288,445 (167)

Digital beamforming enhancement with LSTM-based deep learning for millimeter wave transmission

Open Engineering
Digital beamforming (DBF) has emerged as a pivotal technology for large-scale antenna arrays, offering precise beam steering control. This study presents an innovative approach to enhance millimeter wave transmission by integrating DBF with long short ...
Naji Ali A., Jamel Thamer M., Khazaal Hassan F.   +2 more
doaj   +1 more source

Research on Phase Characteristics of FDA‐AWACS and Direction Finding Mechanism Based on Anti‐Phase Method

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
This paper investigates the phase‐frequency response characteristics of frequency diverse array (FDA) radar on airborne warning and control system (AWACS) platforms and its deception mechanism against interferometric direction finders, aiming to address the vulnerability of AWACS to precise interception by passive direction‐finding systems due to poor ...
Jing Zhang, Bo Wang, Haowei Zhang
wiley   +1 more source

Advanced Digital Beamforming Architectures and Operation Modes for and Enhanced SIGNAL Mission Concept [PDF]

, 2012
Recently, a team of scientist lead by the German Aerospace Center (DLR) have proposed a Ka-band single-pass interferometric mission concept named SIGNAL (SAR for Ice, Glacier aNd globAL Dynamics). SIGNAL main goal is to estimate accurately and repeatedly
López-Dekker, Paco, Younis, Marwan, Garcia, Jose A., Börner, Thomas, Krieger, Gerhard   +4 more
core  

Full‐Wave Electromagnetic Analysis of Forward Scatter Radar Cross Section for Shahed‐Type UAV Detection

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
Full‐wave electromagnetic simulation of forward scatter radar cross section (FSRCS) of a Shahed‐type UAV. The 3D model is combined with angular scattering patterns, illustrating the dependence of forward scattering on observation angle and polarisation.
Oleksii Bielousov, Ivan Bokhan, Vasyl Lykhograi   +2 more
wiley   +1 more source

Investigation on Multimode SAR Imaging Based on Digital Array Radar

Leida xuebao, 2014
Digital Array Radar (DAR) has the ability of simultaneous multimode imaging and has many potential applications. This paper firstly introduces the basic hardware structure and the operation principle of DAR.
Li Xue-shi, Sun Guang-cai, Shao Peng, Wu Yu-feng, Xing Meng-dao   +4 more
doaj   +1 more source

Space‐Time Adaptive Processing Clutter Suppression Algorithm Based on Spatiotemporal Stationarity of Ionospheric Clutter in HFSWR

International Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
In high‐frequency surface wave radar (HFSWR) systems, ionospheric clutter is a common phenomenon that often causes targets to be submerged. Space‐time adaptive processing (STAP) is a classical adaptive filtering algorithm. To reduce computational complexity and the required number of clutter samples, practical radar systems usually employ reduced ...
Ruilong Ren, Weibo Deng, Fulin Su, Xin Zhang, Ayan Chatterjee   +4 more
wiley   +1 more source

Adaptive beamforming for large arrays in satellite communications systems with dispersed coverage [PDF]

, 2011
Conventional multibeam satellite communications systems ensure coverage of wide areas through multiple fixed beams where all users inside a beam share the same bandwidth. We consider a new and more flexible system where each user is assigned his own beam,
Larue de Tournemine, Cécile, J. Montesinos, O. Besson, Besson, Olivier, C. Larue de Tournemine, Montesinos, Julien   +5 more
core   +1 more source

A Low Side Lobe Anti‐UAV Radar Beamforming Method Based on Hybrid Basic Beams Superposition

Electronics Letters, Volume 61, Issue 1, January/December 2025.
This paper proposed a beamforming method based on a hybrid basic beams superposition for anti unmanned aerial vehicle radar in order to decrease side lobe level. A basic beams generation method for improving the attenuation side lobe of the original basic beams is also proposed.
Fei Tong, Yihui Zhang, Jingwei Xu, Lin Li, Guisheng Liao   +4 more
wiley   +1 more source

The Application of JDL to Suppress Sea Clutter for Shipborne HFSWR

International Journal of Antennas and Propagation, 2015
This paper deals with the problem of sea clutter suppression for shipborne high frequency surface wave radar (HFSWR) based on the joint domain localized (JDL) adaptive processing algorithm. The performance of the novel method is compared with 2D FFT plus
Zhenyuan Ji, Chunlei Yi, Junhao Xie, Yang Li   +3 more
doaj   +1 more source

Rapid Target Search Method for Distributed Aperture Radar via Role Reversal

IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.
We propose a novel near‐field processing method based on ‘Virtual Array‐Observer (VAO)’ role reciprocity. Our approach constructs a radar virtual array at the target location, which inversely observes the distributed radar deployment. ABSTRACT Distributed aperture radar (DAR) systems encounter significant computational challenges in near‐field target ...
Jing Chen, Wen Fan, Qun Wan
wiley   +1 more source