Advertisement

Time and Frequency Synchronization

Chapter
  • 793 Downloads
Part of the Navigation: Science and Technology book series (NASTECH)

Abstract

The determination of position in a radiolocation system based on time-of-flight (TOF) estimation is closely related to time measurements in the transmitting and receiving nodes. In theory, TOF can be determined from the time of the transmission at the transmitting node and the time of reception at the receiving node. Such a concept implies that the clocks in the nodes are synchronized in time, and thus clearly the accuracy of range measurements is directly related to the accuracy of time synchronization. Such time synchronization can in turn be achieved by a node with a reference clock transmitting a signal which can be received by all the other nodes in the network. As fixed nodes have known positions, the TOF can be inferred from the distance between the nodes, assuming straight-line radio propagation.

Keywords

Frequency Synchronization Time Reference Signal Mobile Nodes Master Station Geometric Dilution Of Precision (GDOP) 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Brookner E (1998) Tracking and Kalman filtering made easy. WileyGoogle Scholar
  2. Sathyan T, Humphrey D, Hedley M (2011) WASP: a system and algorithms for accurate radio localization using low-cost hardware. IEEE Trans Syst Man Cybern–Part C, 41(2):211–222CrossRefGoogle Scholar
  3. Yu K, Guo YJ, Hedley M (2009a) TOA-based distributed localization with unknown internal delays and clock frequency offsets in wireless sensor networks. IET Signal Proc 3(3):106–118CrossRefGoogle Scholar
  4. Yu K, Sharp I, Guo YJ (2009b) Ground-based wireless positioning. Wiley-IEEE PressGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.CSIRO ICT CentreMarsfieldAustralia
  2. 2.China University of Mining & TechnologyXuzhouChina

Personalised recommendations