Correlated Photon Lidar Based on Time-Division Multiplexing
Single-photon lidar (SPL) exhibits high sensitivity, making it particularly suitable for detecting weak echoes over long distances. However, its susceptibility to background noise necessitates the implementation of advanced filtering techniques and complex algorithms, which can significantly increas...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-01-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/12/2/114 |
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| author | Yun Jiang Bo Liu Zixun Wang Fengyun Huang Taibei Liu Lan Luo Feifan He Yongqi Yang Bin Zhao |
| author_facet | Yun Jiang Bo Liu Zixun Wang Fengyun Huang Taibei Liu Lan Luo Feifan He Yongqi Yang Bin Zhao |
| author_sort | Yun Jiang |
| collection | DOAJ |
| description | Single-photon lidar (SPL) exhibits high sensitivity, making it particularly suitable for detecting weak echoes over long distances. However, its susceptibility to background noise necessitates the implementation of advanced filtering techniques and complex algorithms, which can significantly increase system cost and complexity. To address these challenges, we propose a time-division-multiplexing-based correlated photon lidar system that employs a narrowband pulsed laser with stable time delays and variable pulse intensities, thereby establishing temporal and intensity correlations. This all-fiber solution not only simplifies the system architecture but also enhances operational efficiency. An adaptive cross-correlation method incorporating time slicing has been developed to extract histogram signals, enabling successful 1.5 km distance measurements under intense daytime noise conditions, using a 1 s accumulation time and a 20 mm receiving aperture. The experimental results demonstrate a 38% (from 1.11 to 1.52) improvement in the signal-to-noise ratio (SNR), thereby enhancing the system’s anti-noise capability, facilitating rapid detection, and reducing overall system costs. |
| format | Article |
| id | doaj-art-54a0b242fba445e4b82e109e5dba9bfa |
| institution | DOAJ |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj-art-54a0b242fba445e4b82e109e5dba9bfa2025-08-20T02:44:32ZengMDPI AGPhotonics2304-67322025-01-0112211410.3390/photonics12020114Correlated Photon Lidar Based on Time-Division MultiplexingYun Jiang0Bo Liu1Zixun Wang2Fengyun Huang3Taibei Liu4Lan Luo5Feifan He6Yongqi Yang7Bin Zhao8National Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, ChinaNational Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, ChinaNational Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, ChinaNational Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, ChinaNational Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, ChinaNational Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, ChinaNational Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, ChinaNational Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, ChinaNational Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, ChinaSingle-photon lidar (SPL) exhibits high sensitivity, making it particularly suitable for detecting weak echoes over long distances. However, its susceptibility to background noise necessitates the implementation of advanced filtering techniques and complex algorithms, which can significantly increase system cost and complexity. To address these challenges, we propose a time-division-multiplexing-based correlated photon lidar system that employs a narrowband pulsed laser with stable time delays and variable pulse intensities, thereby establishing temporal and intensity correlations. This all-fiber solution not only simplifies the system architecture but also enhances operational efficiency. An adaptive cross-correlation method incorporating time slicing has been developed to extract histogram signals, enabling successful 1.5 km distance measurements under intense daytime noise conditions, using a 1 s accumulation time and a 20 mm receiving aperture. The experimental results demonstrate a 38% (from 1.11 to 1.52) improvement in the signal-to-noise ratio (SNR), thereby enhancing the system’s anti-noise capability, facilitating rapid detection, and reducing overall system costs.https://www.mdpi.com/2304-6732/12/2/114photon lidartime-division multiplexingranging |
| spellingShingle | Yun Jiang Bo Liu Zixun Wang Fengyun Huang Taibei Liu Lan Luo Feifan He Yongqi Yang Bin Zhao Correlated Photon Lidar Based on Time-Division Multiplexing Photonics photon lidar time-division multiplexing ranging |
| title | Correlated Photon Lidar Based on Time-Division Multiplexing |
| title_full | Correlated Photon Lidar Based on Time-Division Multiplexing |
| title_fullStr | Correlated Photon Lidar Based on Time-Division Multiplexing |
| title_full_unstemmed | Correlated Photon Lidar Based on Time-Division Multiplexing |
| title_short | Correlated Photon Lidar Based on Time-Division Multiplexing |
| title_sort | correlated photon lidar based on time division multiplexing |
| topic | photon lidar time-division multiplexing ranging |
| url | https://www.mdpi.com/2304-6732/12/2/114 |
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