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Published in:
2020 | OriginalPaper | Chapter
Multiple Access Strategy in Cooperative Localization Network: Characteristics and Examples
Authors : Guodong Wang, Guangxia Li, Shiwei Tian, Weiheng Dai, Jing Lv
Published in: China Satellite Navigation Conference (CSNC) 2020 Proceedings: Volume III
Publisher: Springer Singapore
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Abstract
Due to the limitations of the Global Satellite Navigation System (GNSS), its performance in the harsh environment will be limited or even completely rejected. As a new method to enhance GNSS performance, cooperative localization based on inter-node measurements has attracted extensive attention in recent years. However, the positioning accuracy and network performance are always in the state of “Shift from one to other”. The main work is to extract four characteristics of cooperative localization network, design and optimize the multiple access strategy based on time division, which makes it possible for all nodes to perceive the topology of the whole network. Finally, the proposed method is verified by simulation, and the results show the feasibility of the proposed method. This method effectively reduces the amount of measurement frames and prolongs the lifetime of the network. At the same time, the MAC delay is reduced and the positioning frequency is improved.