Time synchronization and temporal ordering of asynchronous sensor measurements of a multi-sensor navigation system

In this article we propose a filter based method to solve the time synchronization and minimum delay temporal ordering problem of asynchronous sensor measurements. A problem which inevitably arise in the sensor fusion of a multi-sensor navigation system implemented in realtime on a general purpose o...

Full description

Saved in:
Bibliographic Details
Published inIEEE/ION Position, Location and Navigation Symposium pp. 897 - 902
Main Authors Nilsson, John-Olof, Handel, Peter
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2010
Subjects
asynchronous sensors
Delay effects
Hardware
Jitter
Job shop scheduling
Navigation
Sampling methods
Sensor fusion
Sensor systems
Synchronization
temporal ordering
Time measurement
Online AccessGet full text

Cover

More Information
Summary:In this article we propose a filter based method to solve the time synchronization and minimum delay temporal ordering problem of asynchronous sensor measurements. A problem which inevitably arise in the sensor fusion of a multi-sensor navigation system implemented in realtime on a general purpose operation system (OS) without using functionality dedicated to realtime applications. The time synchronization is done up to a constant error by linear filtering of time stamps given to each measurement. The filtered time stamps together with predicted future time stamps are then used in a measurement temporal ordering algorithm to achieve a minimal delay temporal ordering subject to a user specified jitter tolerance. Finally, experimental time synchronization and temporal ordering results from the system implemented with a typical set of navigation sensors are presented.
ISBN:1424450365
9781424450367
ISSN:2153-358X
DOI:10.1109/PLANS.2010.5507193