Hard Decision-Based Cooperative Localization for Wireless Sensor Networks
Reliable and accurate localization of objects is essential for many applications in wireless networks. Especially for large-scale wireless sensor networks (WSNs), both low cost and high accuracy are targets of the localization technology. However, some range-free methods cannot be combined with a co...
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doaj-a4a8b217d0c147998b0c596808e24c532020-11-25T01:41:44ZengMDPI AGSensors1424-82202019-10-011921466510.3390/s19214665s19214665Hard Decision-Based Cooperative Localization for Wireless Sensor NetworksZhaoyang Wang0Xuebo Jin1Xiaoyi Wang2Jiping Xu3Yuting Bai4School of Computer and Information Engineering, Beijing Technology and Business University, Beijing 100048, ChinaSchool of Computer and Information Engineering, Beijing Technology and Business University, Beijing 100048, ChinaSchool of Computer and Information Engineering, Beijing Technology and Business University, Beijing 100048, ChinaSchool of Computer and Information Engineering, Beijing Technology and Business University, Beijing 100048, ChinaSchool of Computer and Information Engineering, Beijing Technology and Business University, Beijing 100048, ChinaReliable and accurate localization of objects is essential for many applications in wireless networks. Especially for large-scale wireless sensor networks (WSNs), both low cost and high accuracy are targets of the localization technology. However, some range-free methods cannot be combined with a cooperative method, because these range-free methods are characterized by low accuracy of distance estimation. To solve this problem, we propose a hard decision-based cooperative localization method. For distance estimation, an exponential distance calibration formula is derived to estimate distance. In the cooperative phase, the cooperative method is optimized by outlier constraints from neighboring anchors. Simulations are conducted to verify the effectiveness of the proposed method. The results show that localization accuracy is improved in different scenarios, while high node density or anchor density contributes to the localization. For large-scale WSNs, the hard decision-based cooperative localization is proved to be effective.https://www.mdpi.com/1424-8220/19/21/4665hard decisionwsncooperative localizationdistance calibrationoutlier constraints |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zhaoyang Wang Xuebo Jin Xiaoyi Wang Jiping Xu Yuting Bai |
spellingShingle |
Zhaoyang Wang Xuebo Jin Xiaoyi Wang Jiping Xu Yuting Bai Hard Decision-Based Cooperative Localization for Wireless Sensor Networks Sensors hard decision wsn cooperative localization distance calibration outlier constraints |
author_facet |
Zhaoyang Wang Xuebo Jin Xiaoyi Wang Jiping Xu Yuting Bai |
author_sort |
Zhaoyang Wang |
title |
Hard Decision-Based Cooperative Localization for Wireless Sensor Networks |
title_short |
Hard Decision-Based Cooperative Localization for Wireless Sensor Networks |
title_full |
Hard Decision-Based Cooperative Localization for Wireless Sensor Networks |
title_fullStr |
Hard Decision-Based Cooperative Localization for Wireless Sensor Networks |
title_full_unstemmed |
Hard Decision-Based Cooperative Localization for Wireless Sensor Networks |
title_sort |
hard decision-based cooperative localization for wireless sensor networks |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2019-10-01 |
description |
Reliable and accurate localization of objects is essential for many applications in wireless networks. Especially for large-scale wireless sensor networks (WSNs), both low cost and high accuracy are targets of the localization technology. However, some range-free methods cannot be combined with a cooperative method, because these range-free methods are characterized by low accuracy of distance estimation. To solve this problem, we propose a hard decision-based cooperative localization method. For distance estimation, an exponential distance calibration formula is derived to estimate distance. In the cooperative phase, the cooperative method is optimized by outlier constraints from neighboring anchors. Simulations are conducted to verify the effectiveness of the proposed method. The results show that localization accuracy is improved in different scenarios, while high node density or anchor density contributes to the localization. For large-scale WSNs, the hard decision-based cooperative localization is proved to be effective. |
topic |
hard decision wsn cooperative localization distance calibration outlier constraints |
url |
https://www.mdpi.com/1424-8220/19/21/4665 |
work_keys_str_mv |
AT zhaoyangwang harddecisionbasedcooperativelocalizationforwirelesssensornetworks AT xuebojin harddecisionbasedcooperativelocalizationforwirelesssensornetworks AT xiaoyiwang harddecisionbasedcooperativelocalizationforwirelesssensornetworks AT jipingxu harddecisionbasedcooperativelocalizationforwirelesssensornetworks AT yutingbai harddecisionbasedcooperativelocalizationforwirelesssensornetworks |
_version_ |
1725039885176274944 |