Results 21 to 30 of about 285,146 (289)
Software Defined Radio for GNSS Radio Frequency Interference Localization
Sensors, 2023 The use of radio direction finding techniques in order to identify and reject harmful interference has been a topic of discussion both past and present for signals in the GNSS bands.
Fred Taylor +6 more
doaj +1 more source
Propagation of ultra-high energy protons in the nearby universe [PDF]
, 2000 We present a new calculation of the propagation of protons with energies above $10^{19}$ eV over distances of up to several hundred Mpc. The calculation is based on a Monte Carlo approach using the event generator SOPHIA for the simulation of hadronic ...
A. Bhattacharjee +34 more
core +2 more sources
Robust Directional Angle Estimation of Underwater Acoustic Sources Using a Marine Vehicle
Sensors, 2018 Acoustic source localization is used in many underwater applications. Acquiring an accurate directional angle for an acoustic source is crucial for source localization.
Jinwoo Choi +4 more
doaj +1 more source
An indoor variance-based localization technique utilizing the UWB estimation of geometrical propagation parameters [PDF]
, 2018 A novel localization framework is presented based on ultra-wideband (UWB) channel sounding, employing a triangulation method using the geometrical properties of propagation paths, such as time delay of arrival, angle of departure, angle of arrival, and ...
Gaillot, Davy P. +9 more
core +2 more sources
Sensors, 2021 An angle estimation algorithm for tracking indoor moving targets with WiFi is proposed. First, phase calibration and static path elimination are proposed and performed on the collected channel state information signals from different antennas.
Liping Tian +3 more
doaj +1 more source
Angle of Arrival Estimation Using Cholesky Decomposition
International Journal of Antennas and Propagation, 2012 An angle of arrival (AOA) estimator is presented. Many applications require accurate AOA estimates such as wireless positioning and signal enhancement using space-processing techniques. The proposed AOA estimator depends on the Cholesky decomposition of
Saleh O. Al-Jazzar
doaj +1 more source
A Simple Photonic System for DFS and AOA Simultaneous Measurement
Photonics, 2022 A simple photonics-based dual-channel system is proposed to simultaneously measure the Doppler frequency shift (DFS) and angle of arrival (AOA) of microwave signals.
Xintong Li +5 more
doaj +1 more source
A Simple Photonics-Based Measurement Method for Microwave DFS and AOA
IEEE Photonics Journal, 2022 This article put forwards a simple microwave photonics measurement method for microwave doppler frequency shift (DFS) and angle of arrival (AOA), which obtains the information conveniently and precisely by comparing the frequency and phase shift between ...
Qianqian Jia +4 more
doaj +1 more source
IEEE Access, 2018 Joint time of arrival (TOA) and angle of arrival (AOA) estimation based on a uniform circle array (UCA) involves problems, including high computational complexity in the multi-dimensional spectral search method and lack of applicability in coherent ...
Haiyun Xu +4 more
doaj +1 more source
Practical 3-D Beam Pattern Based Channel Modeling for Multi-Polarized Massive MIMO Systems
Sensors, 2018 In this paper, a practical non-stationary three-dimensional (3-D) channel models for massive multiple-input multiple-output (MIMO) systems, considering beam patterns for different antenna elements, is proposed.
Saeid Aghaeinezhadfirouzja +2 more
doaj +1 more source