Analysis of Flying Vehicle Cooperative Positioning by Sea-Surface Wireless Sensor Networks

Abstract:

Sea-surface wireless sensor networks (S²WSN) is a combination of many nodes forming a certain geometric shape, such as ships and sea-surface radio buoys. To satisfy the requirement of precise tracking for flying vehicle (FV) in times of exterior location datum outages, a cooperative positioning algorithm (CPA) for the FV is proposed. Time synchronization among the nodes is crucial to guarantee CPA. Taking a single-hop S2WSN as an example, the problem of low synchronization precision is resolved by two-way timing with unequal reply time (TWT-UTD). Monte Carlo simulation results show that, through optimizing the position dilution of precision among the sea-surface nodes and the FV, the absolute bias of the FV tracking by the proposed CPA is superior to that of the conventional single ship-based relative positioning method. Meanwhile, the synchronization precision is increased by more than 20% via TWT-UTD method.

• Periodical: Advanced Materials Research (Volume 505)
• Pages: 338-344
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.505.338
• Online since: April 2012
• Authors: Wei Ming Xu, Xiao Dong Yin, Geng Feng Wang
• Keywords: Cooperative Positioning, Flying Vehicle, Wireless Sensor Network (WSN)

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