Results 301 to 310 of about 153,320 (330)
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Navigation from time differences of arrival
The Journal of the Acoustical Society of America, 2004A brief history and a few modern developments are given for hyperboliclike navigation systems in which location is estimated from measurements of the difference in the propagation time of a signal from two or more known locations. Today, hyperbolic navigation is used in locating ships, calling animals, GPS receivers, cellular telephones, and other ...
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The Journal of the Acoustical Society of America, 2007
Much research has been done in the area of estimating time-difference-of-arrival (TDOA) and frequency-difference-of-arrival (FDOA) and their use in locating a radiating source. Early work in this area focused on locating acoustic sources using passive sonar processing.
Mark L. Fowler, Xi Hu
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Much research has been done in the area of estimating time-difference-of-arrival (TDOA) and frequency-difference-of-arrival (FDOA) and their use in locating a radiating source. Early work in this area focused on locating acoustic sources using passive sonar processing.
Mark L. Fowler, Xi Hu
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Indoor Localization Using 802.11 Time Differences of Arrival
IEEE Transactions on Instrumentation and Measurement, 2016This paper proposes a novel time-based method for determining the position of an IEEE 802.11g transmitter using multiple mutually synchronized 802.11g receivers. By means of baseband signal processing, the proposed algorithm obtains a high-resolution estimate of the time of arrival (TOA) of the long training sequence symbol at each receiver.
Ahmed Makki +4 more
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Geolocation by time difference of arrival using hyperbolic asymptotes
2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004The paper proposes a new simplified algorithm to estimate the location of an emitter by utilizing time difference of arrival (TDOA) measurements. This is achieved by recasting the estimation problem in prolate spheroidal coordinates. Prolate spheroidal coordinates greatly simplify the TDOA equations, producing a set of linear equations in the far field
Samuel P. Drake, Kutluyil Dogançay
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Array Shape Observability From Time Differences of Arrival
IEEE Transactions on Aerospace and Electronic Systems, 2011In this paper, we study the observability conditions for the relative position of a set of passive sensors from the measured time differences of arrival (TDOA) of signals from a set of noncooperative sources lying in the same plane. The sources are broadband to measure the TDOA and far enough to consider each source is detected in the same line of ...
Claude Jauffret +2 more
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Time Difference of Arrival Enhancement with Ray Tracing Simulation
2018A Hybrid technique is proposed to improve the Time Difference of Arrival (TDoA) Localization systems in Non-line of Sight situation. A Ray tracing simulation tool is used to extract the time of arrival difference characteristic from the environment and binding with the TDoA a multilateration sensor scheme to estimate the position of an electromagnetic ...
Marcelo N. de Sousa +2 more
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State-space modeling and estimation of time differences of arrival
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1986We propose a new method for time differences of arrival (TDOA's) estimation of multiple sources whose spectra are unknown. In the first part, we show how state-space techniques can be used to easily arrive at an exact discrete global model of the transfer between the source inputs and sensor outputs for sources having rational spectra and for integer ...
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Passive radar localization by time difference of arrival
MILCOM 2002. Proceedings, 2003A detailed analysis for the performance of TDOA based passive radar localization systems is provided. The system considered in the analyses consists of four sensors and associated receiver blocks, samplers, and signal processors. Arrival time for the radar pulses is obtained by adaptive thresholding. Cramer-Rao bounds of TOA and TDOA are obtained.
A. Dersan, Y. Tanik
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Estimation of time differences of arrival by pole decomposition
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1983Time differences of arrival (TDOA's) of emitter wave fronts to a spatially distributed array of sensors can be used to determine the source location. In this paper, we suggest a new method of TDOA estimation for multiple unknown autoregressive moving average (ARMA) sources and additive noise that may be correlated between the sensors.
A. Nehorai, null Guaning Su, M. Morf
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An algebraic solution to the time difference of arrival equations
Proceedings of SOUTHEASTCON '96, 2002A closed form, algebraic solution to the time difference of arrival equations is presented. Prior derivations assumed that the receiving antennas are coplanar. Our derivation allows the receiving antennas to be located anywhere in three dimensional space.
J.D. Bard, F.M. Ham, W.L. Jones
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