Results 31 to 40 of about 147 (116)

Accuracy of Positioning of Ground Sources Using Geostationary Repeaters

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2020
Introduction. Currently, there is a significant increase in the number of relay satellites in geostationary orbit. However, frequent incidents of illegal use of the satellites frequency resource, as well as unintentional and deliberate interference with ...
R. D. Gall
doaj   +1 more source

An effective localization algorithm for moving sources

open access: yesEURASIP Journal on Advances in Signal Processing, 2021
By utilizing the time difference of arrival (TDOA), the frequency difference of arrival (FDOA), and the differential Doppler rate (DDR) measurements from sensors, this paper proposes an effective moving source localization algorithm with closed solutions.
Hao Wang, Liping Li
doaj   +1 more source

Distributed Passive Tracking of a Non-Cooperative Underwater Target Utilizing Temporal Correlation of Line Spectrum

open access: yesJournal of Marine Science and Engineering
Distributed passive acoustic tracking is an important technique for detecting and localizing a non-cooperative underwater target, in which the frequency difference of arrival (FDOA) is a widely used measurement.
Shutong Zong, Wei Gao, Xiaolei Li
doaj   +1 more source

An algebraic method for moving source localization using TDOA, FDOA, and differential Doppler rate measurements with receiver location errors

open access: yesEURASIP Journal on Advances in Signal Processing, 2019
To weaken the effect of receiver location error on localization accuracy and make the localization model closer to the practical scenario, this paper considers the receiver location errors, usually neglected in prior studies into the measurement model ...
Zhixin Liu   +3 more
doaj   +1 more source

Predicting and Clustering Attitude‐Induced Divergence in Cross‐Array AOA Measurements for LEO Satellites

open access: yesIET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
Example of cluster identification of attitude configurations to avoid in the attitude space (in terms of angles of roll, pitch and yaw) for a payload composed by a cross antenna array with angle of arrival technology for CubeSats platforms. ABSTRACT Satellite geolocation of radio‐frequency emitters increasingly relies on compact angle‐of‐arrival (AOA ...
Marcello Asciolla   +2 more
wiley   +1 more source

Robust TDOA/FDOA estimation from emitter signals for hybrid localization using UAVs

open access: yesDefence Technology, 2022
This paper considers the time difference of arrival (TDOA) and frequency difference of arrival (FDOA) estimation problem for joint localization using unmanned aerial vehicles (UAVs), involving range migration (RM) and Doppler ambiguity within observation
Yu-bing Wang   +4 more
doaj   +1 more source

Non‐Coherent Synthetic Aperture Passive Source Localisation

open access: yesIET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
This paper addresses the problem of determining, from passive measurements on moving receivers, the position of an unknown source of electromagnetic (or acoustic) waves. This source is assumed to lie on a known surface, and the wave propagation environment is assumed to be free space. This paper addresses the problem in which there are uncertainties in
Margaret Cheney   +3 more
wiley   +1 more source

A Direct Localization Method for Coprime Arrays Based on Averaging of Redundant Data of Virtual Array Elements

open access: yesIET Signal Processing, Volume 2026, Issue 1, 2026.
To address the issue that the traditional direct position determination (DPD) method for coprime arrays (CAs) has limited performance in scenarios with low signal‐to‐noise ratio (SNR) and small quantity of observation data, a progressive optimization method based on the averaging of redundant data from virtual array elements is proposed. This method is
Hongzhen Wang   +4 more
wiley   +1 more source

An Iterative Method for Moving Target Localization Using TDOA and FDOA Measurements

open access: yesIEEE Access, 2018
For moving targets localization, incorporating frequency-difference-of-arrival (FDOA) measurements in the commonly used time-difference-of-arrival (TDOA) positioning systems will improve performance.
Yanbin Zou, Huaping Liu, Qun Wan
doaj   +1 more source

Barriers and Facilitators of Home Programmes in Children With Cerebral Palsy: A Systematic Review and a Metasynthesis

open access: yesChild: Care, Health and Development, Volume 51, Issue 2, March 2025.
ABSTRACT Introduction One of the treatments with the greater scientific support for children with cerebral palsy (CP) are home programmes (HP). However, its implementation may be complex in some cases. A systematic review was conducted to explore the existing literature on the following question: What are the barriers and facilitators to implementing ...
Mª. Inmaculada Medina‐Valera   +2 more
wiley   +1 more source

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