Range-Extension Algorithms and Strategies for TDOA Ultra-Wideband Positioning System
The Internet of Things (IoT) for smart industry requires the surveillance and management of people and objects. The ultra-wideband positioning system is an attractive solution for achieving centimeter-level accuracy in target location. While many studies have focused on improving the accuracy of the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/6/3088 |
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| author | Shih-Ping Huang Chien-Bang Chen Tan-Zhi Wei Wei-Ting Tsai Chong-Yi Liou Yuan-Mou Mao Wang-Huei Sheng Shau-Gang Mao |
| author_facet | Shih-Ping Huang Chien-Bang Chen Tan-Zhi Wei Wei-Ting Tsai Chong-Yi Liou Yuan-Mou Mao Wang-Huei Sheng Shau-Gang Mao |
| author_sort | Shih-Ping Huang |
| collection | DOAJ |
| description | The Internet of Things (IoT) for smart industry requires the surveillance and management of people and objects. The ultra-wideband positioning system is an attractive solution for achieving centimeter-level accuracy in target location. While many studies have focused on improving the accuracy of the anchor coverage range, it is important to note that in practical applications, positioning areas are often limited and obstructed by furniture, shelves, pillars, or walls, which can restrict the placement of anchors. Furthermore, some positioning regions are located beyond anchor coverage, and a single group with few anchors may not be able to cover all rooms and aisles on a floor due to non-line-of-sight errors causing severe positioning errors. In this work, we propose a dynamic-reference anchor time difference of arrival (TDOA) compensation algorithm to enhance accuracy beyond anchor coverage by eliminating local minima of the TDOA loss function near anchors. We designed a multidimensional and multigroup TDOA positioning system with the aim of broadening the coverage of indoor positioning and accommodating complex indoor environments. By employing an address-filter technique and group-switching process, tags can seamlessly move between groups with a high positioning rate, low latency, and high accuracy. We deployed the system in a medical center to locate and manage researchers with infectious medical waste, demonstrating its usefulness for practical healthcare institutions. Our proposed positioning system can thus facilitate precise and wide-range indoor and outdoor wireless localization. |
| first_indexed | 2024-03-11T05:56:18Z |
| format | Article |
| id | doaj.art-7332ffda792b4d14b5c65990c0908ebc |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T05:56:18Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-7332ffda792b4d14b5c65990c0908ebc2023-11-17T13:45:49ZengMDPI AGSensors1424-82202023-03-01236308810.3390/s23063088Range-Extension Algorithms and Strategies for TDOA Ultra-Wideband Positioning SystemShih-Ping Huang0Chien-Bang Chen1Tan-Zhi Wei2Wei-Ting Tsai3Chong-Yi Liou4Yuan-Mou Mao5Wang-Huei Sheng6Shau-Gang Mao7Graduate Institute of Commutation Engineering, National Taiwan University, Taipei 106, TaiwanGraduate Institute of Commutation Engineering, National Taiwan University, Taipei 106, TaiwanGraduate Institute of Commutation Engineering, National Taiwan University, Taipei 106, TaiwanGraduate Institute of Commutation Engineering, National Taiwan University, Taipei 106, TaiwanGraduate Institute of Commutation Engineering, National Taiwan University, Taipei 106, TaiwanSchool of Medicine, National Taiwan University, Taipei 106, TaiwanSchool of Medicine, National Taiwan University, Taipei 106, TaiwanGraduate Institute of Commutation Engineering, National Taiwan University, Taipei 106, TaiwanThe Internet of Things (IoT) for smart industry requires the surveillance and management of people and objects. The ultra-wideband positioning system is an attractive solution for achieving centimeter-level accuracy in target location. While many studies have focused on improving the accuracy of the anchor coverage range, it is important to note that in practical applications, positioning areas are often limited and obstructed by furniture, shelves, pillars, or walls, which can restrict the placement of anchors. Furthermore, some positioning regions are located beyond anchor coverage, and a single group with few anchors may not be able to cover all rooms and aisles on a floor due to non-line-of-sight errors causing severe positioning errors. In this work, we propose a dynamic-reference anchor time difference of arrival (TDOA) compensation algorithm to enhance accuracy beyond anchor coverage by eliminating local minima of the TDOA loss function near anchors. We designed a multidimensional and multigroup TDOA positioning system with the aim of broadening the coverage of indoor positioning and accommodating complex indoor environments. By employing an address-filter technique and group-switching process, tags can seamlessly move between groups with a high positioning rate, low latency, and high accuracy. We deployed the system in a medical center to locate and manage researchers with infectious medical waste, demonstrating its usefulness for practical healthcare institutions. Our proposed positioning system can thus facilitate precise and wide-range indoor and outdoor wireless localization.https://www.mdpi.com/1424-8220/23/6/3088RTLSTDOAultra-widebandextensible positioning systemout-of-range positioning |
| spellingShingle | Shih-Ping Huang Chien-Bang Chen Tan-Zhi Wei Wei-Ting Tsai Chong-Yi Liou Yuan-Mou Mao Wang-Huei Sheng Shau-Gang Mao Range-Extension Algorithms and Strategies for TDOA Ultra-Wideband Positioning System Sensors RTLS TDOA ultra-wideband extensible positioning system out-of-range positioning |
| title | Range-Extension Algorithms and Strategies for TDOA Ultra-Wideband Positioning System |
| title_full | Range-Extension Algorithms and Strategies for TDOA Ultra-Wideband Positioning System |
| title_fullStr | Range-Extension Algorithms and Strategies for TDOA Ultra-Wideband Positioning System |
| title_full_unstemmed | Range-Extension Algorithms and Strategies for TDOA Ultra-Wideband Positioning System |
| title_short | Range-Extension Algorithms and Strategies for TDOA Ultra-Wideband Positioning System |
| title_sort | range extension algorithms and strategies for tdoa ultra wideband positioning system |
| topic | RTLS TDOA ultra-wideband extensible positioning system out-of-range positioning |
| url | https://www.mdpi.com/1424-8220/23/6/3088 |
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