Results 191 to 200 of about 895,042 (230)
Some of the next articles are maybe not open access.
Age differences in estimating arrival-time
Neuroscience Letters, 2004The present study examined the accuracy in extrapolating an occluded trajectory in relation to observer age. Adults and children aged 7, 10, and 13 were tested in a prediction-motion task which consisted of judging, after the occlusion of the final part of its path, the moment of arrival of a moving stimulus towards a specified position. Results showed
Benguigui, Nicolas +2 more
openaire +2 more sources
Positioning using time-difference of arrival measurements
2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)., 2004The problem of position estimation from time difference of arrival (TDOA) measurements occurs in a range of applications from wireless communication networks to electronic warfare positioning. Correlation analysis of the transmitted signal to two receivers gives rise to one hyperbolic function.
Fredrik Gustafsson, Fredrik Gunnarsson
openaire +1 more source
Robust Localization Using Time Difference of Arrivals
IEEE Signal Processing Letters, 2016We investigate a localization problem using time-difference-of-arrival measurements with unknown and bounded measurement errors. Different from most existing algorithms, we consider the minimization of the worst-case position estimation error to improve the robustness of the algorithm.
Xiufang Shi +5 more
openaire +1 more source
Recursive geolocation with Time Differences of Arrival
2009 IEEE 17th Signal Processing and Communications Applications Conference, 2009Geolocation has particular interest and importance in Electronic Warfare. In this work, Time Difference of Arrival (TDOA) Geolocation is studied. A recursive least squares filter based algorithm has been developed. Location estimation is updated using TDOA measurement sets from moving receivers under the assumption of fixed emitter location.
Sedat Camlica, Yalcin Tanik
openaire +1 more source
Passive Source Localization Using Time Differences of Arrival and Gain Ratios of Arrival
IEEE Transactions on Signal Processing, 2008zbMATH Open Web Interface contents unavailable due to conflicting licenses.
K. C. Ho 0001, Ming Sun 0002
openaire +2 more sources
Optics Letters, 2012
We propose and experimentally demonstrate a photonic approach to the measurement of the time-difference-of-arrival (TDOA) and the angle-of-arrival (AOA) of a microwave signal. In the proposed system, the TDOA and the AOA are equivalently converted into a phase shift between two replicas of a microwave signal received at two cascaded modulators.
Xihua, Zou +5 more
openaire +2 more sources
We propose and experimentally demonstrate a photonic approach to the measurement of the time-difference-of-arrival (TDOA) and the angle-of-arrival (AOA) of a microwave signal. In the proposed system, the TDOA and the AOA are equivalently converted into a phase shift between two replicas of a microwave signal received at two cascaded modulators.
Xihua, Zou +5 more
openaire +2 more sources
Asynchronous time difference of arrival (ATDOA) method
Pervasive and Mobile Computing, 2015A new method for a location service in the asynchronous wireless sensor networks is outlined. This method, which is called asynchronous time difference of arrival (ATDOA), enables calculation of the position of a mobile node without knowledge of relative time differences (RTDs) between measuring sensors.
openaire +1 more source
Bias free estimation of the variance of time of arrival differences
ICASSP '84. IEEE International Conference on Acoustics, Speech, and Signal Processing, 1985In the frequency domain estimation of Time of Arrival differences, phase data of the cross-spectrum may show correlation between frequency bins due to either insufficient time-bandwidth product or the use of a nonrectangular window on the input signal samples.
openaire +1 more source
Distributed time and frequency difference of arrival tracking in clutter
2012 Workshop on Sensor Data Fusion: Trends, Solutions, Applications (SDF), 2012We consider passive surveillance using time and frequency difference of arrival signals received by mobile receiver pairs. Signals received by a pair of receivers are correlated in time and frequency, followed by a detection process. In addition to the target (emitter) measurements, we may also create a number of spurious detections in each scan.
Darko Musicki +2 more
openaire +1 more source
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 ...
openaire +1 more source