Results 21 to 30 of about 109,317 (327)

GNSS Spoofing Suppression Based on Multi-Satellite and Multi-Channel Array Processing

open access: yesFrontiers in Physics, 2022
The endless spoofing interference affects the credibility of the navigation system seriously. In order to suppress the forward spoofing which is more threatening to military signals in GNSS, this paper proposes a spoofing suppression algorithm based on ...
Shaojie Ni   +6 more
doaj   +1 more source

Implementation of accurate broadband steering vectors for broadband angle of arrival estimation [PDF]

open access: yes, 2013
Motivated by accurate broadband steering vector requirements for applications such as broadband angle of arrival estimation, we review fractional delay filter designs.
Alrmah, Mohamed Abubaker   +2 more
core   +1 more source

Space-time division cluster DoA estimation algorithm based on UWA spread spectrum signal

open access: yesTongxin xuebao, 2022
To solve the problems of poor stability, low resolution, and performance degradation under low signal-to-noise ratio (SNR) of the direction of arrival (DoA) estimation, a space-time division cluster (STDC) DoA estimation algorithm was proposed for under ...
Feng ZHOU, Baosheng ZHANG, Wenbo ZHANG
doaj   +2 more sources

Broadband angle of arrival estimation methods in a polynomial matrix decomposition framework [PDF]

open access: yes, 2013
A large family of broadband angle of arrival estimation algorithms are based on the coherent signal subspace (CSS) method, whereby focussing matrices appropriately align covariance matrices across narrowband frequency bins.
Alrmah, Mohamed   +4 more
core   +1 more source

A Simple Cross Correlation Switched Beam System (XSBS) for Angle of Arrival Estimation

open access: yesIEEE Access, 2017
We propose a practical, simple and hardware friendly, yet novel and efficient, angle of arrival (AoA) estimation system. Our intuitive, two-phases cross-correlation-based system requires a switched beam antenna array with a single radio frequency ...
Ahmed Badawy   +4 more
doaj   +1 more source

An indoor variance-based localization technique utilizing the UWB estimation of geometrical propagation parameters [PDF]

open access: yes, 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

Filter bank based fractional delay filter implementation for widely accurate broadband steering vectors [PDF]

open access: yes, 2013
Applications such as broadband angle of arrival estimation require the implementation of accurate broadband steering vectors, which generally rely on fractional delay filter designs.
Alrmah, Mohamed Abubaker, Weiss, Stephan
core   +1 more source

Angle of Arrival Estimation Using Cholesky Decomposition

open access: yesInternational 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

Fundamental limits of single anchor-based cooperative localization in millimeter wave systems

open access: yesEURASIP Journal on Advances in Signal Processing, 2020
Thanks to massive antenna arrays in millimeter wave communications, a much higher resolution can be achieved for the estimation of angle of arrival. By taking full advantage of beamforming capability and high angular resolution in millimeter wave systems,
Feng Zhao, Tiancheng Huang, Donglin Wang
doaj   +1 more source

Software Defined Radio for GNSS Radio Frequency Interference Localization

open access: yesSensors, 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

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