Dual Gm-APD Polarization Lidar to Acquire the Depth Image of Shallow Semitransparent Media With a Wide Laser Pulse
A polarization lidar with dual Geiger-mode avalanche photodiodes (Gm-APDs) is designed to obtain the high-precision depth image of shallow semitransparent media by using a wide laser pulse. The first surface of the semitransparent media is smooth and can nearly preserve the incident polarization, wh...
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IEEE
2020-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/9209031/ |
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| author | Lu Xu Xu Yang Long Wu Chenfei Jin Yijia Zhang |
| author_facet | Lu Xu Xu Yang Long Wu Chenfei Jin Yijia Zhang |
| author_sort | Lu Xu |
| collection | DOAJ |
| description | A polarization lidar with dual Geiger-mode avalanche photodiodes (Gm-APDs) is designed to obtain the high-precision depth image of shallow semitransparent media by using a wide laser pulse. The first surface of the semitransparent media is smooth and can nearly preserve the incident polarization, whereas the second surface is rough and can depolarize the incident polarization. A polarization splitting prism is utilized to separate the two echo signals, which will be detected by dual Gm-APDs. It gives the ability to obtain the extremely shallow depth independent of laser pulse width and dead time of Gm-APD. The theory of laser polarization transmission of dual Gm-APD polarization lidar is analyzed. Signal restoration & center-of-mass algorithm method is used to restrain the range walk error and obtain high range precision. The depth image of shallow semitransparent media with a thickness and distance of 10 cm and 6 m, respectively, is obtained in the experiment with a range precision of 1.1 cm. An experiment of real shallow water layer with different depth features is also performed to verify the result. |
| format | Article |
| id | doaj-art-95da07254fee451fbc8138fbbf7ff3dd |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-95da07254fee451fbc8138fbbf7ff3dd2025-08-20T03:32:46ZengIEEEIEEE Photonics Journal1943-06552020-01-0112511010.1109/JPHOT.2020.30273789209031Dual Gm-APD Polarization Lidar to Acquire the Depth Image of Shallow Semitransparent Media With a Wide Laser PulseLu Xu0https://orcid.org/0000-0003-3863-0932Xu Yang1https://orcid.org/0000-0002-5887-2704Long Wu2https://orcid.org/0000-0002-6696-2486Chenfei Jin3Yijia Zhang4School of Informatics, Zhejiang Sci-Tech University, Hangzhou, ChinaSchool of Informatics, Zhejiang Sci-Tech University, Hangzhou, ChinaSchool of Informatics, Zhejiang Sci-Tech University, Hangzhou, ChinaDepartment of Physics, Harbin Institute of Technology, Harbin, ChinaSchool of Informatics, Zhejiang Sci-Tech University, Hangzhou, ChinaA polarization lidar with dual Geiger-mode avalanche photodiodes (Gm-APDs) is designed to obtain the high-precision depth image of shallow semitransparent media by using a wide laser pulse. The first surface of the semitransparent media is smooth and can nearly preserve the incident polarization, whereas the second surface is rough and can depolarize the incident polarization. A polarization splitting prism is utilized to separate the two echo signals, which will be detected by dual Gm-APDs. It gives the ability to obtain the extremely shallow depth independent of laser pulse width and dead time of Gm-APD. The theory of laser polarization transmission of dual Gm-APD polarization lidar is analyzed. Signal restoration & center-of-mass algorithm method is used to restrain the range walk error and obtain high range precision. The depth image of shallow semitransparent media with a thickness and distance of 10 cm and 6 m, respectively, is obtained in the experiment with a range precision of 1.1 cm. An experiment of real shallow water layer with different depth features is also performed to verify the result.https://ieeexplore.ieee.org/document/9209031/Lidarphoton countingpolarizationrange walk error |
| spellingShingle | Lu Xu Xu Yang Long Wu Chenfei Jin Yijia Zhang Dual Gm-APD Polarization Lidar to Acquire the Depth Image of Shallow Semitransparent Media With a Wide Laser Pulse IEEE Photonics Journal Lidar photon counting polarization range walk error |
| title | Dual Gm-APD Polarization Lidar to Acquire the Depth Image of Shallow Semitransparent Media With a Wide Laser Pulse |
| title_full | Dual Gm-APD Polarization Lidar to Acquire the Depth Image of Shallow Semitransparent Media With a Wide Laser Pulse |
| title_fullStr | Dual Gm-APD Polarization Lidar to Acquire the Depth Image of Shallow Semitransparent Media With a Wide Laser Pulse |
| title_full_unstemmed | Dual Gm-APD Polarization Lidar to Acquire the Depth Image of Shallow Semitransparent Media With a Wide Laser Pulse |
| title_short | Dual Gm-APD Polarization Lidar to Acquire the Depth Image of Shallow Semitransparent Media With a Wide Laser Pulse |
| title_sort | dual gm apd polarization lidar to acquire the depth image of shallow semitransparent media with a wide laser pulse |
| topic | Lidar photon counting polarization range walk error |
| url | https://ieeexplore.ieee.org/document/9209031/ |
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