High-Precision Time Difference of Arrival Estimation Method Based on Phase Measurement
In unmanned aerial vehicle (UAV)-based time difference of arrival (TDOA) positioning technique, baselines are limited due to communication constraints. In this case, the accuracy is highly sensitive to the TDOA measurements’ error. This article primarily addresses the problem of short-baseline high-...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-03-01
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| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-4292/16/7/1197 |
| _version_ | 1797212045467189248 |
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| author | Jihao Xin Xuyang Ge Yuan Zhang Xingdong Liang Hang Li Linghao Wu Jiashuo Wei Xiangxi Bu |
| author_facet | Jihao Xin Xuyang Ge Yuan Zhang Xingdong Liang Hang Li Linghao Wu Jiashuo Wei Xiangxi Bu |
| author_sort | Jihao Xin |
| collection | DOAJ |
| description | In unmanned aerial vehicle (UAV)-based time difference of arrival (TDOA) positioning technique, baselines are limited due to communication constraints. In this case, the accuracy is highly sensitive to the TDOA measurements’ error. This article primarily addresses the problem of short-baseline high-precision time synchronization and TDOA measurement. We conducted a detailed analysis of error models in TDOA systems, considering both the time and phase measurement. We utilize the frequency division wireless phase synchronization technique in TDOA systems. Building upon this synchronization scheme, we propose a novel time delay estimation method that relies on phase measurements based on the integer least squares method. The performance of this method is demonstrated through Monte Carlo simulations and outdoor experiments. The standard deviations of synchronization and TDOA measurements in experiments are 1.12 ps and 1.66 ps, respectively. Furthermore, the circular error probable (CEP) accuracy is improved from 0.33%R to 0.02%R, offering support for the practical application of distributed short-baseline high-precision passive location techniques. |
| first_indexed | 2024-04-24T10:36:08Z |
| format | Article |
| id | doaj.art-d4067a1a26a14b67b58cbd02dda2c7ae |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-04-24T10:36:08Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-d4067a1a26a14b67b58cbd02dda2c7ae2024-04-12T13:25:35ZengMDPI AGRemote Sensing2072-42922024-03-01167119710.3390/rs16071197High-Precision Time Difference of Arrival Estimation Method Based on Phase MeasurementJihao Xin0Xuyang Ge1Yuan Zhang2Xingdong Liang3Hang Li4Linghao Wu5Jiashuo Wei6Xiangxi Bu7National Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaNational Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaNational Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaNational Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaNational Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaSchool of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaNational Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaNational Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaIn unmanned aerial vehicle (UAV)-based time difference of arrival (TDOA) positioning technique, baselines are limited due to communication constraints. In this case, the accuracy is highly sensitive to the TDOA measurements’ error. This article primarily addresses the problem of short-baseline high-precision time synchronization and TDOA measurement. We conducted a detailed analysis of error models in TDOA systems, considering both the time and phase measurement. We utilize the frequency division wireless phase synchronization technique in TDOA systems. Building upon this synchronization scheme, we propose a novel time delay estimation method that relies on phase measurements based on the integer least squares method. The performance of this method is demonstrated through Monte Carlo simulations and outdoor experiments. The standard deviations of synchronization and TDOA measurements in experiments are 1.12 ps and 1.66 ps, respectively. Furthermore, the circular error probable (CEP) accuracy is improved from 0.33%R to 0.02%R, offering support for the practical application of distributed short-baseline high-precision passive location techniques.https://www.mdpi.com/2072-4292/16/7/1197time difference of arrival (TDOA)wireless phase synchronizationphase measurementunmanned aerial vehicle (UAV) |
| spellingShingle | Jihao Xin Xuyang Ge Yuan Zhang Xingdong Liang Hang Li Linghao Wu Jiashuo Wei Xiangxi Bu High-Precision Time Difference of Arrival Estimation Method Based on Phase Measurement Remote Sensing time difference of arrival (TDOA) wireless phase synchronization phase measurement unmanned aerial vehicle (UAV) |
| title | High-Precision Time Difference of Arrival Estimation Method Based on Phase Measurement |
| title_full | High-Precision Time Difference of Arrival Estimation Method Based on Phase Measurement |
| title_fullStr | High-Precision Time Difference of Arrival Estimation Method Based on Phase Measurement |
| title_full_unstemmed | High-Precision Time Difference of Arrival Estimation Method Based on Phase Measurement |
| title_short | High-Precision Time Difference of Arrival Estimation Method Based on Phase Measurement |
| title_sort | high precision time difference of arrival estimation method based on phase measurement |
| topic | time difference of arrival (TDOA) wireless phase synchronization phase measurement unmanned aerial vehicle (UAV) |
| url | https://www.mdpi.com/2072-4292/16/7/1197 |
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