Contents

•  Introduction
  •  Wireless Sensor Networks
  •  Time Synchronization
•  Metrics and Terminology
•  Motivations
  •  Distributed beam-forming and sensor fusion
  •  Multi-sensor integration
  •  In network data aggregation and duplicate suppression
  •  Energy-efficient radio scheduling
  •  Uses common in traditional distributed systems
•  Related Work
  •  Distributed Clocks and Network Time Protocols
  •  National Time Standards and Time Transfer
  •  Methods for avoiding the problem
•  Sensor Network Time
  •  The Need for Something New
  •  Design Principles
  •  Our Approach
•  Post-Facto Synchronization
  •  Expected Sources of Error
  •  Empirical Study
  •  Discussion
•  Work Plan
  •  Development and characterization of time sync methods
  •  Testbed implementation as proof-of-concept
  •  Exploration of methods for tuning and automatic modality selection
•  Conclusions
  • Acknowledgments
• Bibliography
• About this document ...