Results 21 to 30 of about 229,309 (277)

Underwater Acoustic Pulsed Source Localization with a Pair of Hydrophones

open access: yesRemote Sensing, 2018
A series of underwater acoustic localization experiments were conducted in the Eastern Mediterranean Sea to test the performance of a Bayesian method for localization of pulsed acoustic sources exploiting time differences between direct and surface ...
Emmanuel K. Skarsoulis   +6 more
doaj   +1 more source

Passive Radar Source Localization Based on Cuckoo Search NVTDOA

open access: yesInternational Journal of Antennas and Propagation, 2020
In order to meet the requirement of passive radar source localization in electronic warfare, the concept of the virtual time differences of arrival (VTDOA) is proposed by taking advantage of the characteristics of the same UAV in different positions at ...
Gang Niu, Jie Gao, Tai-hang Du
doaj   +1 more source

Development and Demonstration of a TDOA-Based GNSS Interference Signal Localization System [PDF]

open access: yes, 2012
Background theory, a reference design, and demonstration results are given for a Global Navigation Satellite System (GNSS) interference localization system comprising a distributed radio-frequency sensor network that simultaneously locates multiple ...
Bhatti, Jahshan A.   +2 more
core   +1 more source

The Direction of Arrival Location Deception Model Counter Duel Baseline Phase Interferometer Based on Frequency Diverse Array

open access: yesFrontiers in Physics, 2021
With the emergence and development of the passive localization, the radiation source is more visible for the location system which endangers their survival. Therefore, there is an urgent demand for the radio frequency (RF) stealth technology.
Jiaang Ge   +3 more
doaj   +1 more source

Effect of amplification on conductance distribution of a disordered waveguide [PDF]

open access: yes, 2006
Introduction of optical gain to a disordered system results in enhanced fluctuations [$F_{(2)}=var(\tilde{g})/^2$] of dimensionless conductance $\tilde{g}$, similar to the effect of Anderson localization in passive medium.
Alexey Yamilov   +4 more
core   +3 more sources

Bayesian three-dimensional reconstruction of toothed whale trajectories: Passive acoustics assisted with visual and tagging measurements [PDF]

open access: yes, 2012
The author describes and evaluates a Bayesian method to reconstruct three-dimensional toothed whale trajectories from a series of echolocation signals.
Laplanche, Christophe
core   +4 more sources

Range-free passive acoustic localization [PDF]

open access: yes2008 International Conference on Intelligent Sensors, Sensor Networks and Information Processing, 2008
We propose a range-free localization framework in which a network of randomly deployed acoustic sensors can passively use natural acoustic phenomena within its environment to localize itself. We introduce a novel approach for registration of sensors observations which takes advantage of a clustering technique on triplets of associated observations.
Aminreza Abrahami Saba   +2 more
openaire   +1 more source

2D localization with WiFi passive radar and device-based techniques: an analysis of target measurements accuracy [PDF]

open access: yes, 2018
The aim of the work is to investigate the performance of two localization techniques based on WiFi signals: the WiFi-based passive radar and a device-based technique that exploits the measurement of angle of arrival (AoA) and time difference of arrival ...
COLONE, Fabiola   +2 more
core   +1 more source

Passive Localization for Mixed-Field Moving Sources

open access: yesPolish Maritime Research, 2018
Due to the mobility of underwater equipment, high-precision underwater positioning technology will face two technical challenges: dealing with mixed-field signals composed of near-field signals and far-field signals; adapting to variable component of ...
Gao Chunxian, Liu Hui
doaj   +1 more source

Passive Localization Algorithm for Radiation Source Based on Long Synthetic Aperture

open access: yesLeida xuebao, 2020
When the direction-of-arrival estimation is made by a single platform, the localization accuracy decreases with increases in the distance from the radiation source, which means the localization accuracy of the azimuth of the radiation source at long ...
WANG Yuqi   +5 more
doaj   +1 more source

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