Recovering temporal integrity with Data Driven Time Synchronization

Data Driven Time Synchronization (DDTS) provides synchronization across sensors by using underlying characteristics of data collected by an embedded sensing system. We apply the concept of Data Driven Time Synchronization through a seismic deployment consisting of 100 seismic sensors to repair data that was not time synchronized correctly. This deployment used GPS for time synchronization but due to system faults common to environmental sensing systems, data was collected with large time offsets. In seismic deployments, offset data is often never used but we show that Data Driven Time Synchronization can recover the synchronization and make the data usable. To implement Data Driven Time Synchronization to repair the time offsets we use microseisms as the underlying characteristics. Microseisms are waves that travel through the earth’s crust and are independent of the seismic events used for the study of the earth’s structure. We have developed a model of microseism propagation ...

• Type: Conference
• Year: 2009
• Where: IPSN
• Authors: Martin Lukac, Paul Davis, Robert Clayton, Deborah Estrin
• Keywords: IPSN 2009, Sensor Networks