Results 21 to 30 of about 64,399 (240)

Robust Source Localization Using TDOA and FDOA with Receiver Location Errors

open access: yesLeida xuebao, 2020
To address the low location accuracy and poor robustness of existing methods, error correction to improve the Stage 2 of the original Two-Stage Weighted Least Squares (TSWLS)-based methods is proposed, which involves a robust moving source localization ...
Xiangying GAO   +3 more
doaj   +1 more source

Joint source localisation and sensor refinement using time differences of arrival and frequency differences of arrival

open access: yesIET Signal Processing, 2014
The accuracy of sources locations and velocities estimate is very sensitive to the accurate knowledge of sensor locations and velocities. In the presence of sensor position and velocity errors, this study considers the problem of simultaneously locating multiple disjoint sources and refining erroneous sensor positions and velocities using time ...
Benjian Hao   +3 more
openaire   +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

A Novel Estimator for TDOA and FDOA Positioning of Multiple Disjoint Sources in the Presence of Calibration Emitters

open access: yesIEEE Access, 2020
Multiple-target localization is extensively applied in wireless connected networks. However, sensor location uncertainty is known to degrade significantly the target localization accuracy.
Ding Wang   +4 more
doaj   +1 more source

Optimal Sensor Deployment and Velocity Configuration With Hybrid TDOA and FDOA Measurements

open access: yesIEEE Access, 2019
Source localization based on the hybrid time-difference-of-arrival (TDOA) and frequency-difference-of-arrival (FDOA) measurements from distributed sensors is an essential problem in wireless sensor networks (WSNs).
Weijia Wang   +4 more
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

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

Joint arrival-time picking method of microseismic P-wave and S-wave based on time-frequency analysis

open access: yesRock and Soil Mechanics, 2021
Accurate acquisition of arrival time of microseismic signals is an important prerequisite for focal location, and the accurate acquisition of arrival time of P-wave and S-wave of microseismic signals has important theoretical significance.
JIA Bao-xin   +4 more
doaj   +1 more source

Time of arrival difference estimation for narrow band high frequency echolocation clicks [PDF]

open access: yesThe Journal of the Acoustical Society of America, 2019
Algorithms are presented for the accurate time of arrival difference estimation of high frequency narrow band echolocation clicks from Harbor Porpoise. These clicks typically have a center frequency of around 130 kHz (wavelength ∼1.2 cm) and duration of <0.1 ms.
Gillespie, Douglas, Macaulay, Jamie
openaire   +4 more sources

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

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