Results 51 to 60 of about 1,984 (170)

Gaussian Signal Detection With Product Arrays

open access: yesIEEE Access, 2020
The paper specifies the probability density function (PDF) for the detection statistic for a product processor of colinear arrays. The product processor's detection PDF is a scaled product of the detection statistic with modified Bessel functions.
Kaushallya Adhikari, John R. Buck
doaj   +1 more source

2D DOA Estimation Exploiting Vertical Synthetic Planar Arrays

open access: yesIEEE Access, 2021
In this paper, vertical motions of sparse linear arrays (SLAs) are utilized to generate equivalent synthetic planar arrays for two-dimensional (2D) direction-of-arrival (DOA) estimation.
Guiyu Wang, Zesong Fei, Shiwei Ren
doaj   +1 more source

Symmetric thinned coprime array with reduced mutual coupling for mixed near‐field and far‐field sources localization

open access: yesIET Radar, Sonar & Navigation, 2022
As we all know, the non‐uniform array is widely used in the mixed near‐field (NF) and far‐field sources localization. The nested array contains a uniform linear array, it is easy to be affected by mutual coupling, so we propose a symmetric thinned ...
Yinsheng Wang   +4 more
doaj   +1 more source

Research on Three‐Dimensional Autonomous Obstacle Avoidance Path Planning Methods for UAVs

open access: yesTransactions on Emerging Telecommunications Technologies, Volume 37, Issue 2, February 2026.
This study presents a three‐dimensional autonomous obstacle‐avoidance path planning method for unmanned aerial vehicles (UAVs) based on a deep reinforcement learning (DRL)‐enhanced Mayfly Algorithm. The traditional Mayfly Algorithm suffers from issues such as random initial population generation and slow convergence.
Chong Wu, Hao Cheng, Hua Wang
wiley   +1 more source

Efficient Gridless 2-D Direction-of-Arrival Estimation for Coprime Array Based on Decoupled Atomic Norm Minimization

open access: yesIEEE Access, 2020
This paper presents an efficient gridless sparse reconstruction algorithm for the coprime planar array in two-dimensional (2-D) direction-of-arrival (DOA) estimation problem.
Aihong Lu, Yan Guo, Ning Li, Sixing Yang
doaj   +1 more source

Sparse Array DFT Beamformers for Wideband Sources

open access: yes, 2019
Sparse arrays are popular for performance optimization while keeping the hardware and computational costs down. In this paper, we consider sparse arrays design method for wideband source operating in a wideband jamming environment.
Amin, Moeness G., Hamza, Syed A.
core   +1 more source

Spatial‐Frequency Estimation for OFDM System with Coprime Array

open access: yesWireless Communications and Mobile Computing, 2021
Orthogonal frequency division multiplexing (OFDM) is the key technique of the communication system. In this paper, coprime array is designed in OFDM system to obtain joint direction of arrival (DOA) and carrier frequency offset (CFO) estimates. The proposed system can achieve beamforming and adaptive signal processing, reduce the multipath fading, and ...
Gang Shao   +4 more
openaire   +1 more source

Random Lie bracket on sl2(Fp)

open access: yesRandom Structures &Algorithms, Volume 68, Issue 1, January 2026.
ABSTRACT We study a random walk on the Lie algebra sl2(Fp)$$ {\mathfrak{sl}}_2\left({\mathbf{F}}_p\right) $$ where new elements are produced by randomly applying adjoint operators of two generators. Focusing on the generic case where the generators are selected at random, we analyze the limiting distribution of the random walk and the speed at which it
Urban Jezernik, Matevž Miščič
wiley   +1 more source

The two-angle model and the phase diagram for Chromatin

open access: yes, 2005
We have studied the phase diagram for chromatin within the framework of the two-angle model. Rather than improving existing models with finer details our main focus of the work is getting mathematically rigorous results on the structure, especially on ...
Dieter W. Heermann   +6 more
core   +1 more source

Decentralised and Centralised Fixed Structure H∞ Robust Loop Shaping for the MIMO Microsurgical Manipulation Based on PSOGSA

open access: yesIET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.
This paper presents a robust H∞ decentralised and centralised control approach for a microsurgical manipulator using Particle Swarm Optimisation and Gravitational Search Algorithm (PSOGSA). The proposed fixed‐structure Proportional‐Integral‐Derivative (PID)‐based controllers address implementation challenges of conventional high‐order H∞ controllers ...
Somyot Kaitwanidvilai   +2 more
wiley   +1 more source

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