Results 11 to 20 of about 166,346,941 (209)

Location errors in time of arrival (TOA) and time difference of arrival (TDOA) systems [PDF]

open access: yes, 1977
It is shown that the covariance matrix of object location errors is identical for time of arrival (TOA) and time difference of arrival (TDOA) systems if the inverse of the covariance matrix of TOA (TDOA) errors is used as a weighting matrix. Also, with this weighting the location errors statistics do not depend on the particular difference pairs in the
Aronson, Eugene A.
openaire   +3 more sources

ToA-TS: Time of arrival based joint time synchronization and tracking for mobile underwater systems [PDF]

open access: yesAd Hoc Networks, 2015
Time synchronization and localization are key requirements for distributed underwater systems consisting of numerous low-cost submersibles. In these systems, submersibles are highly resource constrained and typically have limited acoustic communication capability.
Jinwang Yi   +5 more
openaire   +4 more sources

Dilution of Precision in Positioning Systems Using Both Angle of Arrival and Time of Arrival Measurements

open access: yesIEEE Access, 2020
Dilution of precision (DOP) is a value that can describe the effect on the relationship between measurement error and position determination error.
Binghao Li, Kai Zhao, Xuesong Shen
doaj   +3 more sources

Design of Orthogonal Phase of Arrival Positioning Scheme Based on 5G PRS and Optimization of TOA Performance

open access: yesIEEE Access
This study analyzes the performance of positioning techniques based on configuration changes of 5G New Radio (NR) signals. In 5G networks, a terminal’s position is determined from the Time of Arrival (TOA) of Positioning Reference Signals (PRS ...
Hyejin Shin   +3 more
doaj   +2 more sources

Arrival and departure manager cooperation for reducing airborne holding times at destination airports [PDF]

open access: yes, 2011
This thesis addresses the possibility of using a delay-on-ground concept in which flights with less than 1 hour flying time (often referred to as pop-up flights) absorb their arrival sequencing delay at the departure gate by being issued their Arrival ...
Rydell, Sofia
core   +7 more sources

Accurate angle-of-arrival measurement using particle swarm optimization [PDF]

open access: yes, 2010
As one of the major methods for location positioning, angle-of-arrival (AOA) estimation is a significant technology in radar, sonar, radio astronomy, and mobile communications.
Ho, Kwok Shun, Hayward, G., Li, M.
core   +4 more sources

Enhanced Positioning Techniques for Hybrid Wireless Networks [PDF]

open access: yes, 2011
The objective of this paper is to propose a reliable and accurate positioning method, which provides location estimates for the mobile user in hybrid wireless network (IEEE802.11/WiFi, IEEE802.16/WiMAX and LTE technologies).
Zvikhachevskaya, Anna   +4 more
core   +4 more sources

TOA Estimation of Indoor Localization by Wi-Fi Signal Based on Waveform Edge Detection [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban, 2022
To locate the target indoor precisely, it was important to investigate on the Wi-Fi based indoor localization parameter, namely, time of arrival(TOA).The main weakness of primary TOA estimation methods were estimation bias, complex algorithm,and lack of ...
MA Dongju, LI Min, ZHANG Duanjin
doaj   +1 more source

Semidefinite Programming Algorithms for 3-D AOA-Based Hybrid Localization

open access: yesIEEE Open Journal of Signal Processing, 2023
By taking different kinds of measurements at the same time, it may be possible to improve the accuracy of target localization or reduce the number of sensors needed.
Yanbin Zou
doaj   +1 more source

Self-Calibration for the Time-of-Arrival Positioning

open access: yesIEEE Access, 2020
Self-calibration of time-of-arrival positioning systems is made difficult by the non-linearity of the relevant set of equations. This work applies dimension lifting to this problem.
Juri Sidorenko   +5 more
doaj   +1 more source

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