Results 171 to 180 of about 12,995 (200)

Improvement in estimation of time of arrival (TOA) from timing advance (TA)

ICUPC '98. IEEE 1998 International Conference on Universal Personal Communications. Conference Proceedings (Cat. No.98TH8384), 2002
Wireless systems reporting TOA (time of arrival), the propagation time from the mobile station (MS) to the base station (BS), may use this information to assist with automatic location identification (ALI). The TA (timing advance), used in TDMA systems, may be used as an approximation for TOA.
G.P. Yost, S. Panchapakesan
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Simulation of Lightning Flash in Time of Arrival (TOA) Method by Using Three Broadband Antennas

2011 UKSim 5th European Symposium on Computer Modeling and Simulation, 2011
Various methods are used to locate cloud-to-ground lightning flash. The accuracy of the methods depends on the number of sensor stations, station topology, mathematical model adopted for the analyses, and type of measuring equipment. For a single station with the configuration of short baseline in a measuring system, the accuracy analysis is mostly ...
Saeed Vahabi Mashak, Hadi Nabipour Afrouzi, Zulkurnain Abdul-Malek   +2 more
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CME-learn: An interactive playground to benchmark CME databases for the time of arrival (ToA) prediction for using machine learning methods.

2022
<p>Coronal mass ejections are one of the most significant drivers of space weather. The ToA predictions along with the Arrival speed of the CMEs are one of the crucial pieces of information for preparing for the possible geomagnetic storms.
Ajay Tiwari, Enrico Camporeale, Dario Del Moro, Raffaello Foldes, Gianluca Napoletano, Giancarlo de Gasperis, Jannis Teunissen   +6 more
openaire   +1 more source

Time-of-arrival (TOA) estimation based structured sparse channel estimation algorithm, with applications to digital TV receivers

2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)., 2004
We introduce a new structured channel impulse response (CIR) estimation method for sparse multipath channels where we demonstrate a robust way of restoring the pulse shape into the composite CIR. We call this novel CIR estimation method time-of-arrival based blended least squares (TOA-BLS) which uses symbol rate sampled signals, and it is based on ...
Serdar Özen, Michael D. Zoltowski
openaire   +1 more source

Structured channel estimation algorithm based on estimating the time-of-arrivals (TOAs), with applications to digital TV receivers

SPIE Proceedings, 2003
In this paper we introduce a new structured channel impulse response (CIR) estimation method for sparse multipath channels. We call this novel CIR estimation method Time-Of-Arrival based Blended Least Squares (TOA-BLS) which uses symbol rate sampled signals, based on blending the least squares based channel estimation and the correlation and cleaning
Serdar Ozen, Michael D. Zoltowski
openaire   +1 more source

A Novel Pilot Aided Time of Arrival (TOA) Estimation Algorithm for Vehicular OFDM Systems in Specular Wireless Channels

2008 IEEE Globecom Workshops, 2008
Channel estimation is vital for implementing schemes such as coherent detection and adaptive bit loading, which make OFDM an attractive PHY layer technology for vehicular wireless communications. However, knowledge of the exact time of arrival (TOA) information of the multi-path components of the vehicular wireless channel is required to achieve ...
Vinay Uday Prabhu, Devendra Jalihal
openaire   +1 more source

An underwater sensor network localization algorithm based on Time-of-Arrivals (TOAs)

2013 Ninth International Conference on Natural Computation (ICNC), 2013
The underwater sensor network localization algorithm is one of the very important steps in the underwater sensor network initialization process. Due to the deployment of environmental constraints, the underwater sensor node can only be indirectly localized by calculation.
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Performance analysis of a passive tracking filter using DOA and TOA measurements (direction of arrival/time of arrival)

Proceedings of the IEEE 1991 National Aerospace and Electronics Conference NAECON 1991, 2002
A method used for estimation of the position of a moving pulse emitter with constant pulse repeat interval by a single observer is studied. The performance of the estimator depends on the emitter trajectory. A specific trajectory that is symmetrical about the closest point of approach is considered.
null Zhou Yiyu, null Sun Zhongkang
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Direction/time of arrivals (D/TOA) estimation characteristics of the MUSIC algorithm for the actual extended targets of the chirp pulse tracking radar

Proceedings of the 2002 IEEE Radar Conference (IEEE Cat. No.02CH37322), 2003
This paper proposes the time space MUSIC technique using the chirp pulse signal of a tracking radar. Direction/time of arrival (D/TOA) estimation characteristics are evaluated for the simulated point sources, simulated extended air targets, and the actual extended air targets.
M. Uneda, H. Hokazono
openaire   +1 more source

Geometric optimization of a time-of-arrival (TOA) based self-positioning terrestrial system

2011 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS 2011), 2011
This work investigates geometric optimization of antenna configuration in lateral geometry for a terrestrial time-of-arrival based self-positioning system, considering optimization confronted by two competing and opposing phenomena, the purely geometric analogy of GPS geometric dilution of precision, and tracking errors in correlation of the ...
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