| Research on High Precision Locating of Laser Spot Center in Free-Space Laser Communication System | |
Meng, Xiangsheng1,2,3; Ma, Caiwen1,3 ; Tian, Yan1,3; Han, Junfeng1,3; Liang, Dongsheng1,3
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| 2021-10-15 | |
| 会议名称 | 5th IEEE Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2021 |
| 会议录名称 | IEEE Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2021 |
| 页码 | 1625-1629 |
| 会议日期 | 2021-10-15 |
| 会议地点 | Xi'an, China |
| 出版者 | Institute of Electrical and Electronics Engineers Inc. |
| 产权排序 | 1 |
| 摘要 | The gray centroid algorithm is usually used as the centroid locating algorithm in the free-space laser communication system. However, the limited spatial resolution of the image detector will produce homogenization effect, which results in gray quantization error. Moreover, the spot information will lost when we detecting the object with threshold. The two problems mentioned above will make the locating accuracy worse when using the conventional algorithm. In this paper, we use the squared weighting centroid with threshold algorithm combined with the hardware optimized interpolation subdivision algorithm to improve the locating accuracy. As the weight of bright pixels increased, and the spot information loss decreased due to subdivision, the locating accuracy improved significantly. The simulation results show that the locating accuracy has improved by at least 50%, and the experiment results confirmed that the tracking error (2.57μrad) using the improved algorithm is less than that (4.11μrad) of the conventional algorithm. © 2021 IEEE. |
| 关键词 | laser communication laser spot centroid bilinear interpolation hardware implementation |
| 作者部门 | 光电跟踪与测量技术研究室 |
| DOI | 10.1109/ITNEC52019.2021.9587297 |
| 收录类别 | EI |
| ISBN号 | 9781665415989 |
| 语种 | 英语 |
| EI入藏号 | 20214711192499 |
| 引用统计 | |
| 文献类型 | 会议论文 |
| 条目标识符 | http://ir.opt.ac.cn/handle/181661/95551 |
| 专题 | 光电跟踪与测量技术研究室 |
| 作者单位 | 1.Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; 2.University of Chinese Academy of Sciences, Beijing; 100049, China; 3.Key Laboratory of Space Precision Measurement Technology, Chinese Academy of Sciences, Xi'an; 710119, China |
| 推荐引用方式 GB/T 7714 | Meng, Xiangsheng,Ma, Caiwen,Tian, Yan,et al. Research on High Precision Locating of Laser Spot Center in Free-Space Laser Communication System[C]:Institute of Electrical and Electronics Engineers Inc.,2021:1625-1629. |
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| Research on High Pre（5004KB） | 会议论文 | 限制开放 | CC BY-NC-SA | 请求全文 | ||
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