Synchronization via Arbitrary Satellite Signals

We describe a method for establishing synchronization between stations using arbitrary signals from space of unknown origin. The method presented is based on time of arrival (TOA) measurements collected by wireless sensor network, with sensors at known locations. The same methods can be applied to T...

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Bibliographic Details
Published in:IEEE transactions on signal processing 2014-04, Vol.62 (8), p.2042-2055
Main Authors: Jean, Oren, Weiss, Anthony J.
Format: Article
Language:English
Subjects:
Applied sciences
Byproducts
Clocks
Computational efficiency
Computer simulation
Cost function
Cramér-Rao lower bound
Detection, estimation, filtering, equalization, prediction
Exact sciences and technology
Information, signal and communications theory
Mathematical models
maximum likelihood
Maximum likelihood estimation
Networks
Satellites
Sensors
Signal and communications theory
Signal, noise
Synchronism
Synchronization
Telecommunications and information theory
time of arrival
Vectors
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Description
Summary:We describe a method for establishing synchronization between stations using arbitrary signals from space of unknown origin. The method presented is based on time of arrival (TOA) measurements collected by wireless sensor network, with sensors at known locations. The same methods can be applied to TDOA measurements allowing the use of a larger family of signals. The structure of the measurements model is exploited to enable computationally efficient synchronization of the network. A by-product is the identification of the azimuth and elevation of the signals from space. A tool for predicting the synchronization accuracy at any error levels has been devised. Simulation results are presented and compared with the theoretical bound and the predicted performance curve.
ISSN:1053-587X
1941-0476
DOI:10.1109/TSP.2014.2304928