Synchronization via Arbitrary Satellite Signals

Author

Jean, Oren ; Weiss, Anthony J.

Author_Institution

Sch. of Electr. Eng., Tel Aviv Univ., Tel Aviv, Israel

Volume

62

Issue

8

fYear

2014

fDate

41744

Firstpage

2042

Lastpage

2055

Abstract

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.

Keywords

maximum likelihood estimation; satellite communication; sensors; synchronisation; time-of-arrival estimation; wireless sensor networks; TDOA measurements; TOA measurements; arbitrary satellite signals; azimuth identification; predicted performance curve; signal elevation; synchronization; theoretical bound; time of arrival; wireless sensor network; Clocks; Cost function; Maximum likelihood estimation; Satellites; Sensors; Synchronization; Vectors; Cramér-Rao lower bound; maximum likelihood; satellites; synchronization; time of arrival;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/TSP.2014.2304928

Filename

6733318