Results 31 to 40 of about 1,023 (184)
IET Signal Processing, Volume 16, Issue 3, Page 299-309, May 2022., 2022 Abstract In this study, we propose an underwater localization method based on an improved invasive weed optimization algorithm to accurately locate moving sources in underwater sensor networks. First, the Lévy flight model is introduced into the invasive weed optimization algorithm to enhance its global search ability and avoid falling into local ...
Yunhang Lin +2 more
wiley +1 more source
CRLB for joint estimation of TDOA, phase, FDOA, and Doppler rate
The Journal of Engineering, 2019 To avoid decline of FDOA estimation precision caused by relative Doppler companding, Doppler rate has to be considered and estimated jointly with TDOA, phase, and FDOA. However, CRLB of the joint estimation is still unclear.
Dexiu Hu +4 more
doaj +1 more source
IEEE 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
Neighborhood Selection Synchronization Mechanism-Based Moving Source Localization Using UAV Swarm
Remote Sensing, 2023 To obtain the accurate time difference of arrival (TDOA) and frequency difference of arrival (FDOA) for passive localization in an unmanned aerial vehicle (UAV) swarm, UAV swarm network synchronization is necessary.
Yongkun Zhou +4 more
doaj +1 more source
Autonomous orbit determination and navigation for formations of CubeSats beyond LEO [PDF]
, 2017 This paper investigates the use of the Time Of Arrival (TOA) and Doppler shift to allow a small formation of CubeSats to navigate beyond low Earth orbit (LEO).
Grey, Stuart +3 more
core +2 more sources
Evidence for Circumburst Extinction of Gamma-Ray Bursts with Dark Optical Afterglows and Evidence for a Molecular Cloud Origin of Gamma-Ray Bursts [PDF]
, 2002 First, we show that the gamma-ray bursts with dark optical afterglows (DOAs) cannot be explained by a failure to image deeply enough quickly enough, and argue that circumburst extinction is the most likely solution.
Price, Paul A., Reichart, Daniel E.
core +2 more sources
Localization of wireless emitters based on the time difference of arrival (TDOA) and wavelet denoising [PDF]
, 1999 The views expressed in this report are those of the author and do not reflect the official policy or position of the Department of Defense or the United States Government.The localization of mobile wireless communication units using time difference of ...
Aktas, Unal +2 more
core +1 more source
A Mathematical Algorithm of Locomotive Source Localization Based on Hyperbolic Technique
International Journal of Distributed Sensor Networks, 2015 Recent trend shows that sensors situated on an axis in two-dimensional scenario measuring the time difference of arrival (TDOA) and frequency difference of arrival (FDOA) of the emitting signal from a moving source can estimate the emitting signal's ...
Homayun Kabir +3 more
doaj +1 more source
Accuracy of Positioning of Ground Sources Using Geostationary Repeaters
Известия 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
EURASIP 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