Deep Learning for Fingerprint Localization in Indoor and Outdoor Environments
Wi-Fi and magnetic field fingerprinting-based localization have gained increased attention owing to their satisfactory accuracy and global availability. The common signal-based fingerprint localization deteriorates due to well-known signal fluctuations. In this paper, we proposed a Wi-Fi and magneti...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | ISPRS International Journal of Geo-Information |
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| Online Access: | https://www.mdpi.com/2220-9964/9/4/267 |
| _version_ | 1797570183439581184 |
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| author | Da Li Yingke Lei Xin Li Haichuan Zhang |
| author_facet | Da Li Yingke Lei Xin Li Haichuan Zhang |
| author_sort | Da Li |
| collection | DOAJ |
| description | Wi-Fi and magnetic field fingerprinting-based localization have gained increased attention owing to their satisfactory accuracy and global availability. The common signal-based fingerprint localization deteriorates due to well-known signal fluctuations. In this paper, we proposed a Wi-Fi and magnetic field-based localization system based on deep learning. Owing to the low discernibility of magnetic field strength (MFS) in large areas, the unsupervised learning density peak clustering algorithm based on the comparison distance (CDPC) algorithm is first used to pick up several center points of MFS as the geotagged features to assist localization. Considering the state-of-the-art application of deep learning in image classification, we design a location fingerprint image using Wi-Fi and magnetic field fingerprints for localization. Localization is casted in a proposed deep residual network (Resnet) that is capable of learning key features from a massive fingerprint image database. To further enhance localization accuracy, by leveraging the prior information of the pre-trained Resnet coarse localizer, an MLP-based transfer learning fine localizer is introduced to fine-tune the coarse localizer. Additionally, we dynamically adjusted the learning rate (LR) and adopted several data enhancement methods to increase the robustness of our localization system. Experimental results show that the proposed system leads to satisfactory localization performance both in indoor and outdoor environments. |
| first_indexed | 2024-03-10T20:21:18Z |
| format | Article |
| id | doaj.art-6e1d449edb6f4459af9e24b1ec072a56 |
| institution | Directory Open Access Journal |
| issn | 2220-9964 |
| language | English |
| last_indexed | 2024-03-10T20:21:18Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ISPRS International Journal of Geo-Information |
| spelling | doaj.art-6e1d449edb6f4459af9e24b1ec072a562023-11-19T22:10:58ZengMDPI AGISPRS International Journal of Geo-Information2220-99642020-04-019426710.3390/ijgi9040267Deep Learning for Fingerprint Localization in Indoor and Outdoor EnvironmentsDa Li0Yingke Lei1Xin Li2Haichuan Zhang3College of Electronic Engineering, National University of Defense Technology, Hefei 230000, ChinaCollege of Electronic Engineering, National University of Defense Technology, Hefei 230000, ChinaCollege of Electronic Engineering, National University of Defense Technology, Hefei 230000, ChinaCollege of Electronic Engineering, National University of Defense Technology, Hefei 230000, ChinaWi-Fi and magnetic field fingerprinting-based localization have gained increased attention owing to their satisfactory accuracy and global availability. The common signal-based fingerprint localization deteriorates due to well-known signal fluctuations. In this paper, we proposed a Wi-Fi and magnetic field-based localization system based on deep learning. Owing to the low discernibility of magnetic field strength (MFS) in large areas, the unsupervised learning density peak clustering algorithm based on the comparison distance (CDPC) algorithm is first used to pick up several center points of MFS as the geotagged features to assist localization. Considering the state-of-the-art application of deep learning in image classification, we design a location fingerprint image using Wi-Fi and magnetic field fingerprints for localization. Localization is casted in a proposed deep residual network (Resnet) that is capable of learning key features from a massive fingerprint image database. To further enhance localization accuracy, by leveraging the prior information of the pre-trained Resnet coarse localizer, an MLP-based transfer learning fine localizer is introduced to fine-tune the coarse localizer. Additionally, we dynamically adjusted the learning rate (LR) and adopted several data enhancement methods to increase the robustness of our localization system. Experimental results show that the proposed system leads to satisfactory localization performance both in indoor and outdoor environments.https://www.mdpi.com/2220-9964/9/4/267fingerprint localizationdeep learningWi-Fi signalmagnetic fieldunsupervised learning |
| spellingShingle | Da Li Yingke Lei Xin Li Haichuan Zhang Deep Learning for Fingerprint Localization in Indoor and Outdoor Environments ISPRS International Journal of Geo-Information fingerprint localization deep learning Wi-Fi signal magnetic field unsupervised learning |
| title | Deep Learning for Fingerprint Localization in Indoor and Outdoor Environments |
| title_full | Deep Learning for Fingerprint Localization in Indoor and Outdoor Environments |
| title_fullStr | Deep Learning for Fingerprint Localization in Indoor and Outdoor Environments |
| title_full_unstemmed | Deep Learning for Fingerprint Localization in Indoor and Outdoor Environments |
| title_short | Deep Learning for Fingerprint Localization in Indoor and Outdoor Environments |
| title_sort | deep learning for fingerprint localization in indoor and outdoor environments |
| topic | fingerprint localization deep learning Wi-Fi signal magnetic field unsupervised learning |
| url | https://www.mdpi.com/2220-9964/9/4/267 |
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