Results 21 to 30 of about 177,367 (306)

Array amplitude-phase and mutual coupling error joint correction method based on sparse Bayesian

open access: yesTongxin xuebao, 2022
In the actual array direction finding system, there are often a variety of errors such as amplitude and phase, mutual coupling, which lead to serious deterioration of array direction finding performance.In order to solve the problem of array direction ...
Ding WANG, Weigang GAO, Zhidong WU
doaj   +2 more sources

Passive Joint Emitter Localization with Sensor Self-Calibration

open access: yesRemote Sensing, 2023
This paper studies the problem surrounding distributed passive arrays (sensors) locating multiple emitters while performing self-calibration to correct possible errors in the assumed array directions.
Guangbin Zhang   +5 more
doaj   +1 more source

Assessment and improvement of the capabilities of a window correlator to model GPS multipath phase errors [PDF]

open access: yes, 2006
The potential of output from a window correlator to mitigate GPS phase multipath is reviewed and assessed based on the analysis of data collected in controlled multipath environments under both static and kinematic conditions.
P.A. Cross   +8 more
core   +1 more source

Signal waveform estimation in the presence of uncertainties about the steering vector [PDF]

open access: yes, 2004
We consider the problem of signal waveform estimation using an array of sensors where there exist uncertainties about the steering vector of interest. This problem occurs in many situations, including arrays undergoing deformations, uncalibrated arrays ...
Chalus, Christophe   +2 more
core   +1 more source

Analysis of Influences due to Navigation Message Error of GPS Signals on Receiver [PDF]

open access: yesThe Journal of the Korean Institute of Information and Communication Engineering, 2010
The integrity monitoring of anomalous GPS signal have been researched because of the degradation of GPS satellite performance. It is known that anomalous GPS signal can occur by failure of GPS satellite, sudden increase of ionosphere delay error, SA, wrong modeling for navigation parameters from control segment, and an electromagnetic wave interference,
Hee-Won Kang   +2 more
openaire   +1 more source

Performance analysis of beamformers using generalized loading of the covariance matrix in the presence of random steering vector errors [PDF]

open access: yes, 2005
Robust adaptive beamforming is a key issue in array applications where there exist uncertainties about the steering vector of interest. Diagonal loading is one of the most popular techniques to improve robustness.
Besson, Olivier, Vincent, François
core   +1 more source

Experimental investigation of pointing errors on drone-based FSO systems [PDF]

open access: yes, 2020
Airborne free space optical (FSO) links can be efficiently used for backhaul/fronthaul needs of future cellular networks. Unlike terrestrial FSO links where a fixed connection between two buildings is considered, airborne FSO links bring unique ...
Hatef Nouri   +5 more
core   +1 more source

Main Lobe Anti-Interference Algorithm Based on Robust Oblique Projection Preprocessing [PDF]

open access: yesHangkong bingqi
In practical applications, the array received data often contains target signal components, using the covariance matrix of the sample including the partial target signal instead of the covariance matrix of the interference noise will cause significant ...
Sui Zhenxing, Wang Zheng, Yuan Xiaolei
doaj   +1 more source

Free-Space Optical MISO Communications With an Array of Detectors

open access: yesIEEE Open Journal of the Communications Society, 2020
Multiple-input multiple-output (MIMO) and multiple-input single-output (MISO) schemes have yielded promising results in free space optical (FSO) communications by providing diversity against fading of the received signal intensity.
Muhammad Salman Bashir   +1 more
doaj   +1 more source

A novel adaptive beamforming scheme for array signal data processing

open access: yesEURASIP Journal on Wireless Communications and Networking, 2023
When the desired signal data exists in the array received data or the steering vector has a mismatch problem, the current traditional adaptive beamformers will suffer from the effect of the desired signal cancelation phenomenon, resulting in a sharp ...
Heping Shi   +3 more
doaj   +1 more source

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